234 results on '"Manta"'
Search Results
2. Age and growth of the blue shark Prionace glauca (Linnaeus, 1758) in the Ecuadorian Pacific: Bayesian multi‐models.
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Nicole, Suárez‐Aguilar, Fernanda, Zambrano‐Cedeño, Mendoza‐Nieto, Klever, and Briones‐Mendoza, Jesus
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MARKOV chain Monte Carlo , *PREDATORY aquatic animals , *WILDLIFE conservation , *SHARKS , *MARINE ecology - Abstract
The blue shark Prionace glauca plays a critical role as a predator in marine ecosystems but is threatened by by‐catch. To obtain more precise biological data, a Bayesian approach was used, and 536 vertebrae samples collected during 1 year at the landing stage called "Playita Mía" Manta, Ecuador, were analysed. The objective was to estimate the age and growth parameters of the species. The size of the specimens varied between 116 and 310 cm in total length (TL). Using a Bayesian approach based on the Markov Chain Monte Carlo (MCMC) method, growth parameters were evaluated. The von Bertalanffy model was the one that best fitted the data and provided more adequate estimates (females: L∞ = 325.50 cm, L0 = 53.23 cm, and k = 0.12 years; males: L∞ = 331.47 cm, L0 = 51.59 cm, k = 0.12 years −1; combined sexes: L∞ = 329.65 cm, L0 = 53.64 cm, k = 0.11 year−1). The results indicated that females and males have a similar growth, and that the species has a slow growth. Further studies using multi‐model Bayesian approaches and covering a broader range of sizes in the Pacific Ocean are suggested. These studies will provide crucial information for the management and conservation of this species. [ABSTRACT FROM AUTHOR]
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- 2024
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3. Prevalence of mental health status among displaced individuals at Hamam al-Alil camp in Ninevah governorate.
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Baktash, Mohammed Qassim and Saeed Jallod, Iman Mohammed
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MENTAL illness , *FORCED migration , *MENTAL health , *MINDFULNESS , *INTERNALLY displaced persons , *POLITICAL refugees , *REFUGEES ,NINEVEH (Extinct city) - Abstract
Background: Nearly 45 million individuals worldwide are internally displaced annually by conflicts. While the psychological effects of war have been extensively documented, there is less understanding of the psychological and mental health symptoms experienced by internally displaced persons (IDPs) as a result of forced displacement. (IDPs). Aim: This study aims to assess the mental health status of people displaced in Hamam Al-Alil Camp. Methods: The cross-sectional survey study design was performed in Hamam Al-Alil camps (Situated on the western bank of the Tigris River in the Nineveh Governorate in Iraq, to the south of Mosul) for the period of 26th December 2017 throughout 1st March 2018. The sample of the study consists of (869) participants. Results: The study distributed 869 surveys which show that the estimation of females was (54%), while males (46%), most of the participants in this study were at age (18-30) years old, and a majority of the participants reported at least one or more mental conditions such as PTSD and anxiety Conclusions: Most of the participants were female and housewives (54%) (52%) respectively, and in terms of age (39%) they ranged in age from 18 to 30 years old as well as Hamam Al-Alil residents people reported a high prevalence of mental health symptoms. Recommendation: Resettlement partners must be mindful of the specific health concerns within this population to effectively meet the needs of the community. [ABSTRACT FROM AUTHOR]
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- 2024
4. Clinical outcomes of MANTA closure device in percutaneous endovascular aortic aneurysm repair.
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Peeters, Maxim, Oosterveld, Rens, Decraemer, Gilles, Wong, ChunYu, Salemans, Pieter, Nouwens, Ruben, Bouwman, Lee, and Yazar, Ozan
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The MANTA device is a plug-based vascular closure device (VCD) designed for large bore femoral arterial access site closure. It showed promising results in transcatheter aortic valve replacement cases. In this study, we report our results and evaluate the MANTA VCD in percutaneous endovascular aortic aneurysm repair (pEVAR). All data of consecutive patients who underwent an elective pEVAR between October 2018 and December 2022 were retrospectively reviewed. In all patients at least one common femoral artery was intended to close with the MANTA VCD. Depending on the sheath size, the 14Fr or 18Fr MANTA VCD was used. On the preoperative computed tomography scan, the diameter of the common femoral artery (CFA) was measured and the amount of calcification based on the Peripheral Arterial Calcium Scoring System (PACSS) was scored. Primary outcome was procedural technical success. Procedural technical success was defined as placement of the MANTA closure device resulting in vascular closure with patent CFA, without requiring immediate open or endovascular surgery. The secondary outcomes were access site complications requiring reintervention and all-cause mortality at 30-day follow-up. In total, 152 consecutive patients underwent pEVAR with 291 common femoral artery closure procedures with the Manta VCD. Mean age was 74.1 ± 6.4 years, with a mean body mass index of 27.7 ± 4.4 kg/m
2 . The mean diameter of the CFA was 10.5 ± 1.9 mm. In 52.6% of the cases, there were no calcification on the preoperative computed tomography scan. The 18Fr and 14Fr Manta VCD were used 169 and 122 times, respectively. The technical success rate was 96.6%. Major vascular complications were reported in 4.5% of the cases, without any death-related events. This single-center retrospective cohort study analyzed the procedural technical success, major vascular complications and all-cause mortality at 30-day follow-up of the MANTA vascular closure device in 152 pEVAR patients with 291 common femoral artery closure procedures. The technical success rate was 96,6%. Major vascular complications were reported in 4.5% of the cases, without any death related events. We concluded that the MANTA device is a safe and feasible option with a high rate of technical success in patients undergoing pEVAR. [ABSTRACT FROM AUTHOR]- Published
- 2024
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5. Vascular Complications Following Transcatheter Aortic Valve Implantation, Using MANTA (Collagen Plug-Based) versus PROSTAR (Suture-Based), from a French Single-Center Retrospective Registry.
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Benic, Clément, Nicol, Pierre Philippe, Hannachi, Sinda, Gilard, Martine, Didier, Romain, and Nasr, Bahaa
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VASCULAR surgery , *HEART valve prosthesis implantation , *COLLAGEN - Abstract
TAVI requires a large-bore arteriotomy. Closure is usually performed by the suture system. Some studies report a vascular complication rate of up to 21%. MANTA is a recently developed percutaneous closure system dedicated to large caliber vessels based on an anchoring system. Early studies report a lower rate of vascular complications with MANTA devices. This single-center retrospective study included all patients who underwent femoral TAVI at the Brest University Hospital from 20 November 2019 to 31 March 2021. The primary endpoint is the rate of vascular complications (major and minor) pre and post-TAVI procedure. In total, 264 patients were included. There were no significant differences in vascular complications (major and minor) between the two groups (13.6% in the MANTA group versus 21.2% in the PROSTAR group; p = 0.105), although there was a tendency to have fewer minor vascular complications in the Manta group (12.1% versus 20.5%; p = 0.067). Manta was associated with a lower rate of bleeding complications (3.8% versus 15.2%; p = 0.002), predominantly minor complications with fewer closure failures (4.5% versus 13.6%; p = 0.01), less use of covered stents (4.5% versus 12.9%; p = 0.016), and with no difference in the need for vascular surgery compared to the Prostar group (1.5% versus 2.3%; p = 0.652). On the other hand, Manta was associated with a higher rate of femoral stenosis (4.5% versus 0%; p = 0.013) without clinical significance (1.5% versus 0%; p = 0.156). The Manta and Prostar devices are equivalent in terms of vascular complications. The Manta, compared to the Prostar, is associated with fewer bleeding complications. [ABSTRACT FROM AUTHOR]
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- 2023
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6. Transformaciones en el desarrollo urbano de Manta, Ecuador: desde la ciudad colonial hasta la ciudad fragmentada
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Yanet Samada Grasst
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ciudad fragmentada ,desarrollo urbano ,expansión ,manta ,modelo compacto ,Social Sciences - Abstract
La expresión territorial y transformaciones en el desarrollo urbano de la ciudad de Manta en el Ecuador es una característica de la ciudad intermedia, que muestra un gran crecimiento demográfico, unido a un extraordinario consumo de suelo para usos urbanos, determinado por la vocación de puerto y ubicación estratégica. La presente investigación se direccionó en analizar las transformaciones en el desarrollo urbano de Manta, desde la ciudad colonial hasta la fragmentada. Para ello, fue necesario la aplicación de una metodología descriptiva, bajo un enfoque cualitativo a través del análisis documental en donde se identificó, revisó y clasificó de forma rigurosa la literatura especializada que permitió deducir el paso del modelo compacto y urbano polinuclear, propio de las fases iniciales de la investigación, al disperso fragmentado y sectorial; sustentado en los ejes viales principales que son utilizados de manera poco homogénea en zonas periféricas, sin una adecuada planificación de las áreas de expansión que ha inducido a un crecimiento urbano fragmentado. Entre los principales hallazgos se identificó como la dinámica económica vinculada a las actividades portuarias, fabriles y pesca de exportación, supusieron la mayor expansión de la superficie urbana consolidando un patrón de baja densidad apoyado en los nuevos ejes viarios. El resultado es una ocupación dispersa, desordenada, claramente segregada y donde las escasas políticas urbanas han alentado la inversión inmobiliaria en las zonas mejor dotadas de equipamientos, servicios y conectividad.
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- 2023
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7. Comparison of plug-based versus suture-based vascular closure for large-bore arterial access: a collaborative meta-analysis of observational and randomized studies.
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Dumpies, Oliver, Jobs, Alexander, Obradovic, Danilo, van Wiechen, Maarten, Hartung, Philipp, Rotta detto Loria, Johannes, Wilde, Johannes, Majunke, Nicolas, Kiefer, Philipp, Noack, Thilo, Thiele, Holger, van Mieghem, Nicolas, Desch, Steffen, and Abdel-Wahab, Mohamed
- Abstract
Background: Large-bore arteriotomies can be percutaneously closed with suture-based or plug-based vascular closure device (VCD) strategies. The efficacy of both techniques remains controversial. Aims: We conducted a meta-analysis of comparative studies between both VCD strategies, focusing on the most commonly applied VCDs (MANTA and ProGlide). Methods: We searched MEDLINE, the Cochrane Central Register of Controlled Trials and Google scholar for observational studies (OS) and randomized controlled trials (RCT) comparing vascular closure with the MANTA-based and the ProGlide-based technique. The principal endpoint of this analysis was access-site related vascular complications. Both study types were analyzed separately. Results: Access-site related vascular complications were less frequent after vascular closure with the MANTA technique in the analysis of OS (RR 0.61 [95%CI 0.43–0.89], p = 0.01, I
2 = 0%), but more frequent in the analysis of RCT data (RR 1.70 [95%CI 1.16–2.51], p = 0.01, I2 = 0%). Both data sets provided no significant difference between the VCD techniques in terms of overall bleeding events (OS: RR 0.57 [95%CI 0.32–1.02], p = 0.06, I2 = 70%; and RCT: RR 1.37 [95%CI 0.82–2.28], p = 0.23, I2 = 30%). RCT data showed that endovascular stenting or vascular surgery due to VCD failure occurred more often after MANTA application (RR 3.53 [95%CI 1.07–11.33], p = 0.04, I2 = 0%). Conclusions: While OS point to favorable outcomes for large-bore vascular closure with the MANTA-based technique, RCT data show that this strategy is associated with more access-site related vascular complications as well as endovascular stenting or vascular surgery due to device failure compared with the ProGlide-based technique. [ABSTRACT FROM AUTHOR]- Published
- 2023
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8. Routine use of percutaneous femoral cannulation in minimally invasive cardiac surgery.
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Ma, Kristina, Kastengren, Mikael, Svenarud, Peter, Green, Ram, and Dalén, Magnus
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ARTERIAL puncture , *MINIMALLY invasive procedures , *VASCULAR closure devices , *ARTIFICIAL blood circulation , *FEMORAL artery , *ARTERIAL stenosis - Abstract
Open in new tab Download slide OBJECTIVES Large series of percutaneous femoral access for extracorporeal circulation in minimally invasive cardiac surgery (MICS) are scarcely reported. METHODS This is a single-centre study describing the use of percutaneous femoral access in patients undergoing MICS via minithoracotomy. Femoral artery closure was performed with a plug-based closure device. To reduce the risk for vascular complications, intraoperative ultrasound assessment of correct deployment of the arterial closure device was done during the later period of the study. RESULTS During a 5-year period, 650 patients underwent percutaneous femoral cannulation and decannulation with device closure of the femoral artery puncture. Two hundred and seven patients (31.8%) were operated in the early phase of the experience (August 2017–August 2019), without the use of intraoperative ultrasound assessment of closure device deployment. During the later period of our experience (August 2019–September 2022), 443 patients (68.2%) were operated, of whom all underwent intraoperative ultrasound assessment of closure device deployment. Of the patients operated without intraoperative ultrasound assessment, 6 patients (2.9%) experienced vascular complications compared with none of the patients in whom intraoperative ultrasound-assessment was used (P < 0.001). In total, 15 patients (2.3%) underwent conversion to surgical cutdown owing to incomplete haemostasis or femoral artery stenosis/occlusion and the mechanism was intravascular deployment of the closure device in all 15 cases. CONCLUSIONS Percutaneous femoral access in MICS is safe and the need for surgical cutdown was infrequent. The risk for vascular complications is minimized with the use of intraoperative ultrasound assessment of the correct positioning of the vascular closure device. CLINICAL TRIAL REGISTRATION NUMBER http://www.clinicaltrials.gov ; Unique identifier: NCT05462769. [ABSTRACT FROM AUTHOR]
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- 2023
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9. Venezuelan Migration, COVID-19 and Food (in)Security in Urban Areas of Ecuador.
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Milán, Taymi and Martens, Cheryl
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GRANDPARENTS ,GRANDCHILDREN ,CITIES & towns ,COVID-19 ,VENEZUELANS ,PORT cities ,FORCED migration - Abstract
The forced migration of nearly 6 million Venezuelans is a global issue that is transforming urban contexts, particularly in Latin America. Ecuador is the third main recipient country of displaced Venezuelans. The lack of State migration policies and the deteriorating economic situation throughout the region have had significant impacts on migrants. While food security and migration have been studied extensively in Latin America, their intersection remains under-explored. Through a systematic review and focus group research, this exploratory study analyzes the food security conditions of Venezuelans in Ecuador and the impacts of the COVID-19 pandemic on the levels of food insecurity using an intersectional approach. Quantitative, systematic review results demonstrate that demands for food assistance outweighed the planning and provisions supplied by both state and non-state actors. Focus groups results support the findings from the systematic review and demonstrate that in the medium-sized port cities of Manta and Machala, food demands during the pandemic lockdown measures were met through the direct food supply and resilience strategies, including the securing of personal loans and bartering. In contrast, in the cities of Quito and Huaquillas, strict enforcement of COVID-19 lockdown measures, reduced access to work and systematic food access and increased reliance on food assistance from non-governmental actors. This study also found that the impacts of food (in)security in the context of COVID-19 disproportionately affected women in all cities, as they offered their food rations to meet the needs of their children, grandchildren, or other dependents. [ABSTRACT FROM AUTHOR]
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- 2023
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10. Vascular Closure Devices and Complications
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Masoomi, Reza, Khera, Sahil, Kini, Annapoorna, editor, and Sharma, Samin K., editor
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- 2021
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11. Suture-based vs. pure plug-based vascular closure devices for VA-ECMO decannulation–A retrospective observational study
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Clemens Scherer, Hans Theiss, Mario Istrefi, Leonhard Binzenhöfer, Danny Kupka, Thomas Stocker, Enzo Lüsebrink, Era Stambollxhiu, Ahmed Alemic, Tobias Petzold, Konstantin Stark, Simon Deseive, Daniel Braun, Dominik Joskowiak, Sven Peterss, Jörg Hausleiter, Christian Hagl, Steffen Massberg, and Martin Orban
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cardiogenic shock ,VA-ECMO ,ProGlide ,MANTA ,suture-based closure device ,plug-based closure device ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
BackgroundVeno-arterial extracorporeal membrane oxygenation (VA-ECMO) is a valuable treatment option for patients in cardiogenic shock, but complications during decannulation may worsen the overall outcome. Therefore, the aim of this study was to compare the efficacy and safety of suture-based to pure plug-based vascular closure devices for VA-ECMO decannulation.MethodsIn this retrospective study, the procedural outcome of 33 patients with suture-based Perclose ProGlide closure devices was compared to 38 patients with MANTA plug-based closure devices.ResultsRate of technically correct placement of closure devices was 88% in the suture-based group and 97% in the plug-based group (p = 0.27). There was a significant reduction of severe bleeding events during VA-ECMO decannulation in plug-based versus suture-based systems (3% vs. 21%, p = 0.04). Ischemic complications occurred in 6% with suture-based and 5% with plug-based device (p = 1.00). Pseudoaneurysm formation was detected in 3% in both groups (p = 1.00). No switch to vascular surgery due to bleeding after decannulation was necessary in both groups.ConclusionBased on our retrospective analysis, we propose that plug-based vascular closure should be the preferred option for VA-ECMO decannulation. This hypothesis should be further tested in a randomized trial.
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- 2023
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12. Research Priorities to Support Effective Manta and Devil Ray Conservation
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Stewart, Joshua D, Jaine, Fabrice RA, Armstrong, Amelia J, Armstrong, Asia O, Bennett, Michael B, Burgess, Katherine B, Couturier, Lydie IE, Croll, Donald A, Cronin, Melissa R, Deakos, Mark H, Dudgeon, Christine L, Fernando, Daniel, Froman, Niv, Germanov, Elitza S, Hall, Martin A, Hinojosa-Alvarez, Silvia, Hosegood, Jane E, Kashiwagi, Tom, Laglbauer, Betty JL, Lezama-Ochoa, Nerea, Marshall, Andrea D, McGregor, Frazer, di Sciara, Giuseppe Notarbartolo, Palacios, Marta D, Peel, Lauren R, Richardson, Anthony J, Rubin, Robert D, Townsend, Kathy A, Venables, Stephanie K, and Stevens, Guy MW
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Biological Sciences ,Ecology ,Life on Land ,manta ,mobula ,devil ray ,elasmobranch ,management ,Oceanography ,Geology - Published
- 2018
13. Percutaneous decannulation of extracorporeal membrane oxygenation using MANTA device: A real-world single-center experience.
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Milioglou I, Qian A, Salerno PRVO, Pereira GTR, Palma Dallan LA, Gray KE, Morrison M, Abu-Omar Y, Eldiasty M, and Baeza C
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Background: The MANTA vascular closure device (VCD) represents a novel approach to achieving hemostasis after large-bore femoral access procedures. Numerous clinical studies have evaluated the efficacy of the MANTA device across a range of patient populations undergoing different procedures. However, there is still a paucity of data available concerning the use of MANTA devices in aiding the decannulation of venoarterial extracorporeal membrane oxygenation (VA-ECMO)., Aim: To present our single-center experience of utilizing the MANTA VCD in patients undergoing this procedure., Methods: This single-center study included all patients undergoing percutaneous decannulation of femoral VA-ECMO using the MANTA plug-based VCD between January 2021 and October 2023 at University Hospitals Cleveland Medical Center. Inclusion criteria were adult patients who required prolonged (> 24 hours) hemodynamic support with VA-ECMO. Outcomes included all-cause mortality, hemostasis, bleeding, limb ischemia, and site infection., Results: This is a retrospective cohort study of 19 patients with a mean age of 56.8 years. Twelve of them were males with a mean body mass index of 29. The most common extracorporeal membrane oxygenation indication was acute coronary syndrome complicated by cardiogenic shock at 36.8%. The mean length of intensive care unit stay for these patients was 18.8 ± 8.42 days. Seventeen out of 19 patients survived to discharge. The MANTA device was successfully deployed in 19 patients, with 10 procedures conducted at the bedside and 9 in an operating room setting. Complete hemostasis was achieved within 5 minutes of MANTA deployment in 17 out of 19 patients. In 2 patients manual compression after Manta deployment was required to achieve adequate hemostasis. Additionally, acute lower extremity ischemia was noted in two patients, necessitating endovascular interventions. No infections were reported at the site of MANTA deployment., Conclusion: Overall, based on our experience and that of other centers, the MANTA VCD has proven to be a simple, safe, and effective percutaneous technique for facilitating in the OR, but most of all it opens the opportunity for bedside VA-ECMO decannulation. Post-decannulation ischemic complications are higher in this series of sick patients when compared with elective procedures like transcatheter aortic valve replacement and endovascular aneurysm repair. Additionally, operators should be mindful of the incidence of ischemic complications. Distal Doppler pulse signals should always be checked, to indicate bailout options when this occurs., Competing Interests: Conflict-of-interest statement: No conflict of interest is declared by the authors of this manuscript., (©The Author(s) 2024. Published by Baishideng Publishing Group Inc. All rights reserved.)
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- 2024
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14. Mantas jēdziens civiltiesībās
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Erlens Kalniņš
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manta ,tiesību kopība ,mantas sastāvs ,galvenā un sevišķā manta ,surogācijas princips ,ķermenisku lietu kopība ,Law in general. Comparative and uniform law. Jurisprudence ,K1-7720 - Abstract
Publikācija veltīta civiltiesiskajā regulējumā lietotā jēdziena „manta” satura noskaidrošanas problemātikai. Rakstā, pirmkārt, atspoguļota pastāvošā viedokļu dažādība jautājumā par to, kas civiltiesībās saprotams ar jēdzienu „manta”. Otrkārt, rakstā aplūkots jēdziens „manta” īstā nozīmē, šī jēdziena pazīmes un jēdzieniskā atšķirība no „ķermenisku lietu kopības” un „mantojuma”, kā arī aplūkots jautājums par mantas sastāvu, mantas masām un surogācijas principa nozīmi. Rakstā izvirzīta tēze, ka ar jēdzienu „manta” īstā nozīmē saprotams to naudā novērtējamo tiesību kopums (jeb „tiesību kopība” CL 849. p. 1. d. izpratnē), kas pieder konkrētam tiesību subjektam un kas kalpo kā viņa atbildības objekts, uz ko var tikt vērsta piedziņa par labu šī subjekta kreditoriem.
- Published
- 2022
15. Newborns physiological differences in low- and high-altitude settings of Ecuador.
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Asas-Jinde, Mayra and González-Andrade, Fabricio
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NEWBORN infants ,ERYTHROCYTES ,BLOOD gases ,RESPIRATORY acidosis ,FETAL physiology - Abstract
Newborns show physiological differences in low- and high-altitude settings of Ecuador; those differences are especially relevant because most important cities in Ecuador are located at high altitude, above 2500 m. This study is an epidemiological, observational, and cross-sectional research performed at San Francisco Hospital in Quito (at 2850 m) and General Hospital in Manta (at 6 m) in the Manabí province. We studied 204 full-term newborns, healthy without any prenatal comorbidities, singleton pregnancy, mestizos, and born of healthy parents born. We found significant differences between the values of red blood cells (RBC), leucocytes, hematocrit, and hemoglobin. There was a difference of 27% more in RBC, 3% at hematocrit, and 0.4 g at hemoglobin in the high-altitude cohort. The leucocyte difference is 1270 cells/µl, which means a difference of 6%. At high-altitude settings, the mean pH was lower than normal values and pO
2 , pCO2, and HCO3 . High-altitude newborns showed RBC of > 4,500,000 cells/µl; leukocytes > 19,000; pO2 ≤ 72 mm Hg; hemoglobin > 17.50 g/dl; and hematocrit > 54%. Both cohorts showed physiological changes of transition to extrauterine life. We observed higher polycythemia, respiratory acidosis, and hypoxemia among high-altitude newborns. High-altitude setting intensifies the physiological changes in hematological and arterial blood gases parameters. [ABSTRACT FROM AUTHOR]- Published
- 2022
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16. Percutaneous plug-based vascular closure device in 1000 consecutive transfemoral transcatheter aortic valve implantations.
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Kastengren, Mikael, Settergren, Magnus, Rück, Andreas, Feldt, Kari, Saleh, Nawsad, Linder, Rickard, Verouhis, Dinos, Meduri, Christopher U., Bager, Jessica, and Dalén, Magnus
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HEART valve prosthesis implantation , *ARTERIAL puncture , *VASCULAR closure devices , *FEMORAL artery , *VASCULAR surgery - Abstract
Arterial access-site related complications constitute a large proportion of adverse events related to cardiac interventions requiring large-bore devices and have significant implications on morbidity, mortality and hospital cost. To evaluate the safety and effectiveness of a novel percutaneous plug-based vascular closure device (VCD) in 1000 consecutive patients undergoing transfemoral transcatheter aortic valve implantation (TAVI). A single-center observational study evaluating a plug-based VCD (MANTA, Teleflex/Essential Medical Inc., Malvern, Pennsylvania, USA) in patients undergoing TAVI at the Karolinska University Hospital, Stockholm, Sweden. The primary outcome was VCD-related major vascular complication according to the criteria of the Valve Academic Research Consortium (VARC)-2. From May 2017 to September 2020 a total of 1000 consecutive patients underwent transfemoral TAVI with arterial access-site management using the MANTA VCD. VARC-2 major vascular complications occurred in 42 (4.2%) patients: 17 (1.7%) patients intraoperatively received a covered stent, 17 (1.7%) patients underwent surgical repair during hospital stay, 3 (0.3%) patients underwent vascular surgery after discharge, 3 (0.3%) patients had major bleeding and 2 (0.2%) patients had symptoms of claudication with conservative treatment. No significant differences in major complications were seen between individual interventionists irrespective of experience with the device. A larger sheath outer diameter to femoral artery inner diameter ratio was the only factor associated with a significant increase of VCD-related major vascular complications. This largest ever real-world evaluation of MANTA for large-bore arteriotomy closure in transfemoral TAVI patients indicates effective and safe arterial access-site management with low complication rates and short learning curve. Clinical Trial Registration: http://www.clinicaltrials.gov. Unique identifier: NCT04392492. • This is the largest ever real-world evaluation of the novel plug-based vascular closure device (VCD) MANTA. • A total of 1000 consecutive patients underwent transfemoral TAVI with arterial access-site management using the MANTA VCD. • A larger sheath diameter to femoral artery diameter ratio was associated with an increase of vascular complications. • No significant differences in major complications were seen between individual interventionists irrespective of experience. • The MANTA VCD was effective and safe for arterial access-site management with low complication rates. [ABSTRACT FROM AUTHOR]
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- 2022
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17. Comparing the outcomes of bedside percutaneous VA‐ECMO decannulation by ProGlide and Manta in a high‐ECMO‐volume center in Hong Kong.
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Au, Shek‐yin, Chan, Kwong‐Shun, Fong, Ka‐man, Wong, Hoi‐mei Ruby, Fong, Yan‐Hang, Chui, Shing‐Fung, Chan, Kam‐Tim, Lee, Kang‐Yin Michael, Ng, Wing‐yiu George, So, Sheung‐on, and Leung, Kit‐hung Anne
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EXTRACORPOREAL membrane oxygenation , *BLOOD products , *DOPPLER ultrasonography - Abstract
Background: The use of veno–arterial extracorporeal membrane oxygenation (VA‐ECMO) decannulation with different percutaneous closure devices has been increasing. At our center, ProGlide devices have been used since November 2018, and Manta devices became an alternative since March 2020. This study aimed to compare the success and complication rates and the clinical outcomes of ProGlide and Manta devices for VA‐ECMO decannulation after arteriotomy wound closure. Methods: We retrospectively reviewed the results of bedside VA‐ECMO decannulation between November 2018 and June 2021. Patients with VA‐ECMO who could be bridged to recovery were recruited and divided into the ProGlide or Manta group based on the closure device used. Procedure time, amount of blood loss, amount of blood products transfused, and use of vasoactive medications during the procedure were documented. Clinical examination and Doppler ultrasound were performed to detect any complications. Results: After the closure technique, ProGlide was used in 44 patients and Manta was used in 13. There was no significant difference in the success rate between the ProGlide and Manta groups (86.4% vs. 100%). Amount of blood loss was greater in the ProGlide group than in the Manta group (290 [100–400] ml vs. 50 [50–100] ml), and more patients in the ProGlide group required an increased dose of inotropes during the procedure (59.1% vs. 15.4%), but the transfusion requirement was similar between the two groups. Conclusions: The success rate of hemostasis using arteriotomy wound closure during VA‐ECMO decannulation was similar between the two devices. [ABSTRACT FROM AUTHOR]
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- 2022
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18. Large-bore arterial access closure after transcatheter aortic valve replacement: a systematic review and network meta-analysis.
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Montalto, Claudio, Munafò, Andrea Raffaele, Arzuffi, Luca, Soriano, Francesco, Mangieri, Antonio, Nava, Stefano, De Maria, Giovanni Luigi, Burzotta, Francesco, D'Ascenzo, Fabrizio, Colombo, Antonio, Latib, Azeem, Oreglia, Jacopo Andrea, Banning, Adrian P., Porto, Italo, and Crimi, Gabriele
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HEART valve prosthesis implantation ,VASCULAR closure devices ,HEALTH outcome assessment ,DISEASE risk factors ,MORTALITY - Abstract
Aims As the indications to transcatheter aortic valve replacement (TAVR) expand to patients at increasingly lower risk, procedure-related vascular and bleeding complications events must be minimized. We aimed to evaluate the impact of different large-bore arterial access closure devices on clinical outcomes after TAVR. Methods and results We searched for papers that reported outcomes according to the type of vascular closure device/technique used after TAVR and performed a Bayesian network meta-analysis (NMA). Fifteen studies involving 9259 patients who underwent access site closure using PROSTAR™ XL percutaneous vascular surgical system (Abbott Vascular, Santa Clara, CA, USA), Perclose ProGlide™ suture-mediated closure system (Abbott), or MANTATM vascular closure device (Teleflex, Morrisville, NC, USA) were included. NMA showed MANTA to have the highest likelihood of reducing a primary composite endpoint of intra-hospital death, major vascular complications, and major or life-threatening bleedings [surface under the cumulative ranking curve analysis (SUCRA) 94.8%], but this was mitigated when only randomized clinical trials and propensity-matched cohorts were included (SUCRA 56.1%). The ProGlide showed the highest likelihood to reduce major or life-threatening bleedings, especially with increasing procedural complexity, and the MANTA device to reduce major and minor vascular complications. The ProStar XL device performed poorly in all explored endpoints. Conclusion Available evidence summarized through a NMA shows that ProGlide and MANTA devices appear to be both valid vascular closure devices globally and to be the best options to minimize vascular complications and reduce bleeding in patients undergoing TAVR, respectively. [ABSTRACT FROM AUTHOR]
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- 2022
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19. MANTA and MANTA-RAy: Rationale and Design of Trials Evaluating Effects of Filgotinib on Semen Parameters in Patients with Inflammatory Diseases.
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Hellstrom, Wayne J. G., Dolhain, Radboud J. E. M., Ritter, Timothy E., Watkins, Timothy R., Arterburn, Sarah J., Dekkers, Goele, Gillen, Angi, Tonussi, Caroline, Gilles, Leen, Oortwijn, Alessandra, Van Beneden, Katrien, de Vries, Dick E., Sikka, Suresh C., Vanderschueren, Dirk, and Reinisch, Walter
- Abstract
Introduction: The phase 2 MANTA and MANTA-RAy studies were developed in consultation with global regulatory authorities to investigate potential impacts of filgotinib, a Janus kinase 1 preferential inhibitor, on semen parameters in men with active inflammatory diseases. Here we describe the methods and rationale for these studies. Methods and Rationale: The MANTA and MANTA-RAy studies included men (aged 21–65 years) with active inflammatory bowel disease (IBD) and rheumatic diseases, respectively. Participants had no history of reproductive health issues, and the following semen parameter values (≥ 5th percentile of World Health Organization reference values) at baseline: semen volume ≥ 1.5 mL, total sperm/ejaculate ≥ 39 million, sperm concentration ≥ 15 million/mL, sperm total motility ≥ 40% and normal sperm morphology ≥ 30%. Each trial included a 13-week, randomized, double-blind, placebo-controlled period (filgotinib 200 mg vs placebo, up to N = 125 per arm), for pooled analysis of the week-13 primary endpoint (proportion of participants with ≥ 50% decrease from baseline in sperm concentration). All semen assessments were based on two samples (≤ 14 days apart) to minimize effects of physiological variation; stringent standardization processes were applied across assessment sites. From week 13, MANTA and MANTA-RAy study designs deviated owing to disease-specific considerations. All subjects with a ≥ 50% decrease in sperm parameters continued the study in the monitoring phase until reversibility, or up to a maximum of 52 weeks, with standard of care as treatment. Overall conclusions from MANTA and MANTA-RAy will be based on the totality of the data, including secondary/exploratory measures (e.g. sperm motility/morphology, sex hormones, reversibility of any effects on semen parameters). Conclusions: Despite the complexities, the MANTA and MANTA-RAy studies form a robust trial programme that is the first large-scale, placebo-controlled evaluation of potential impacts of an advanced IBD and rheumatic disease therapy on semen parameters. Trial Registration: EudraCT numbers 2017-000402-38 and 2018-003933-14; ClinicalTrials.gov identifiers NCT03201445 and NCT03926195. Plain Language Summary: Filgotinib is a treatment for patients with ulcerative colitis and rheumatoid arthritis, and is being studied in other inflammatory diseases. Filgotinib works by blocking Janus kinase 1, an intracellular protein involved in inflammatory signalling processes. We designed the MANTA and MANTA-RAy trials with global health agencies to find out if filgotinib decreases the quality of semen in men with active inflammatory bowel disease (ulcerative colitis or Crohn's disease) (MANTA) or rheumatic disease (rheumatoid arthritis, psoriatic arthritis, ankylosing spondylitis or non-radiographic axial spondylitis) (MANTA-RAy). This paper describes the design of the two trials. Patients had normal sperm measurements and could not have had previous reproductive health issues. Nearly 250 patients were included in each trial. In both MANTA and MANTA-RAy, half of the patients were treated with 200 mg of filgotinib once a day for 13 weeks, and the other half with placebo. We determined if any patients had a decrease in number of sperm cells per millilitre (sperm concentration) by at least half after 13 weeks of treatment. We then monitored any patients who had such a decrease in sperm concentration for up to 52 weeks (while they received standard of care treatment) or until the decrease was reversed. The conclusions from the trials will be in a different paper and will be based on all the final data, including changes in sex hormones. This is the first large-scale clinical trial programme to measure the effect of a treatment on sperm in men with inflammatory bowel disease or rheumatic diseases. [ABSTRACT FROM AUTHOR]
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- 2022
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20. Manta versus Perclose ProGlide vascular closure device after transcatheter aortic valve implantation: Initial experience from a large European center.
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Dumpies, Oliver, Kitamura, Mitsunobu, Majunke, Nicolas, Hartung, Phillip, Haag, Anna, Wilde, Johannes, Desch, Steffen, Sandri, Marcus, Crusius, Lisa, Noack, Thilo, Kiefer, Philipp, Leontyev, Sergey, Borger, Michael, Thiele, Holger, Holzhey, David, and Abdel-Wahab, Mohamed
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VASCULAR closure devices , *ARTERIAL puncture , *HEART valve prosthesis implantation , *ARTERIAL catheterization , *AORTIC stenosis , *SURGICAL hemostasis , *FEMORAL artery , *TREATMENT effectiveness , *PROSTHETIC heart valves , *AORTIC valve , *HEMORRHAGE , *DISEASE complications ,AORTIC valve surgery - Abstract
Background: Vascular and bleeding complications are common after transcatheter aortic valve implantation (TAVI) and are associated with worse outcomes. The plug-based Manta (M) vascular closure device (VCD) is a novel option to achieve haemostasis for large-bore arterial access sites.Objective: We aimed to compare vascular and bleeding complications between the M-VCD and the established suture-based Perclose ProGlide (P)-VCD.Methods: From February to September 2019 a total of 578 patients underwent transfemoral TAVI at a single high-volume centre. Access site closure was performed using M-VCD in 195 patients (33.7%) and P-VCD in 383 patients (66.3%). We assessed vascular and access site-related complications as well as bleeding events according to the Valve Academic Research Consortium-2 definition.Results: Overall vascular complications occurred less frequently in the M-VCD group (10.7% vs. 19.0%, p = 0.011) driven by a significantly lower rate of major vascular events (2.0% vs. 6.5%, p = 0.025). Access site-related complications were significantly less frequent in the M-VCD cohort (10.7% vs. 16.6%, p = 0.048). The M-VCD was associated with significantly lower rates of major (0.5% vs. 4.4%, p = 0.009) and life-threatening bleeding (0% vs. 2.3%, p = 0.032). In multivariable analysis, the use of M-VCD was the only independent predictor of vascular complications (odds ratio 0.54, 95% confidence interval 0.32-0.91, p = 0.022).Conclusions: The M-VCD was associated with a reduction of vascular and access-site complications as well as severe bleeding after transfemoral TAVI compared to the P-VCD in this observational study. [ABSTRACT FROM AUTHOR]- Published
- 2022
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21. La influencia de la segunda revolución industrial en la pesca de atunes del océano pacífico oriental ecuatoriano: siglo XX.
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Eduardo Xavier Pico Lozano
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Pesca ,Historia ,Manta ,History of scholarship and learning. The humanities ,AZ20-999 ,Social sciences (General) ,H1-99 - Abstract
Se explora descriptivamente el fenómeno de la segunda revolución industrial y su relación con la pesca del atún en la ciudad de Manta, Ecuador. Manta llegó a ser conocida como la capital mundial del atún en el siglo XX, y las transformaciones de este fenómeno pueden percibirse desde la cantonización de San Pablo de Manta, hasta el origen y desarrollo de la pesca del atún con fines de exportación. Metodológicamente hemos consultado fuentes transversales, como entrevistas personales, fuentes bibliográficas y documentales, de diferentes archivos internacionales, nacionales y locales.
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- 2022
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22. Manta Net: The Golden Method for Sampling Surface Water Microplastics in Aquatic Environments
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Gabriel Pasquier, Périne Doyen, Maria Kazour, Alexandre Dehaut, Mamadou Diop, Guillaume Duflos, and Rachid Amara
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microplastics ,sampling ,manta ,net ,review ,methods ,Environmental sciences ,GE1-350 - Abstract
Microplastics (MPs) (plastic particles < 5 mm in size) have become the most ubiquitous type of anthropogenic litter contaminating aquatic environments worldwide, and are capable of harming aquatic organisms and entering the food web. Microplastic research has rapidly evolved over several decades, with many studies sampling microplastic in surface waters. For sea surface sampling of MPs, different net devices have been used. But although there is an increasing number of studies using these devices to quantifying MPs in different aquatic environments, data comparison is difficult due to the lack of standardised, harmonised sampling methods and data reporting units. The Manta net device is actually the most commonly used method for sea surface sampling of MPs. The three main parts of this net are: the floating/stabilizing part, the opening mouth and the net bag, and each of them can have its own specifications. These specifications, along with the sampling methods, can be critical for the efficiency of the sampling accurate quantification of MPs in the aquatic environments. The use of different mesh sizes, inconsistency in trawling duration, speed and distance, and in the net opening dimensions, make it impossible to compare the studies between each other. This review analyzes the methodologies and characteristics of Manta nets used for MPs sampling, discussing factors that can impact the efficiency of the sampling and the quantification of MPs, and proposes recommendations in order to improve and standardize the sampling protocol.
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- 2022
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23. Complications of the MANTA Closure Device: Insights From MAUDE Database.
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Megaly, Michael, Sedhom, Ramy, Abdelmaseeh, Peter, ElBebawy, Bishoy, Goel, Sachin S., Karam, Joseph, Pershad, Ashish, Brilakis, Emmanouil S., and Garcia, Santiago
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VASCULAR closure devices , *ARTERIAL catheterization , *DATABASES - Abstract
Background: The collagen-based MANTA device (Teleflex, PA, USA) is used for closure of large-bore vascular access. There is a paucity of data on complications associated with its use in a real-life setting.Methods: We queried the "Manufacturer and User Facility Device Experience" MAUDE database between February 2019 and December 2020 for reports on MANTA device.Results: We identified 250 reports in the MAUDE database from February 2019 through December 2020. The most common failure complication of MANTA is persistent bleeding (48.8%) and vessel occlusion or stenosis (29.6%). Most complications were managed successfully with an endovascular approach (48.4%), but a high number of patients required surgical intervention (40.4%). The most commonly reported failure mechanism was the failure of deployment (22%) followed by subcutaneous deployment (7.6%), intraluminal deployment (4.8%) amd detachment of collagen (2.8%). Access site infection was rare (1.2%). The 18 Fr. MANTA was associated with a lower risk of failure of deployment compared with the 14 Fr. device but was associated with a higher risk of vessel occlusion or stenosis (32.4% vs. 16.3%, p = 0.04) and thrombosis (11.6% vs 0%, p = 0.03).Conclusions: The most common complication of the MANTA device reported to the MAUDE registry was persistent bleeding (48.8% of reports) followed by vessel occlusion (29.6%). These complications were managed successfully using an endovascular approach in 48.4% of the reports. [ABSTRACT FROM AUTHOR]- Published
- 2022
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24. Seguridad y turismo: plan de seguridad para las zonas turísticas en Manta-Ecuador
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Paola Cecilia Gálvez Izquieta, Karla Lucía Ramírez Iñiguez, Mariela Ercilia Pinos Guerra, and Daniela Nataly Mero Espinosa
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seguridad ,turismo ,plan de seguridad ,manta ,seguridad turística ,Commerce ,HF1-6182 ,Business ,HF5001-6182 - Abstract
La presente investigación tiene como propósito estudiar la seguridad y turismo, desde el plan de seguridad para las zonas turísticas en Manta-Ecuador, específicamente se asume a la seguridad con visión integral para alcanzar el desarrollo de un destino turístico. Para ello se realizó una investigación de tipo descriptiva con un enfoque mixto por lo que se hizo uso de algunas herramientas como entrevistas, cuestionario para encuestas, observación. Permitiéndose obtener como resultados un esquema de plan de seguridad, mismo que se deberá adaptar a las condiciones de cada destino. Pudiéndose concluir que la seguridad es una variable precursora al cambio positivo y estable del desarrollo territorial de un destino turístico. Se concluye que el turismo es una vía para lograr el desarrollo mediante planes sistematizados por Zonas en Ecuador.
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- 2020
25. A dated molecular phylogeny of manta and devil rays (Mobulidae) based on mitogenome and nuclear sequences
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Poortvliet, Marloes, Olsen, Jeanine L, Croll, Donald A, Bernardi, Giacomo, Newton, Kelly, Kollias, Spyros, O’Sullivan, John, Fernando, Daniel, Stevens, Guy, Magaña, Felipe Galván, Seret, Bernard, Wintner, Sabine, and Hoarau, Galice
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Animals ,Bayes Theorem ,Biological Evolution ,Cell Nucleus ,Fossils ,Genome ,Mitochondrial ,High-Throughput Nucleotide Sequencing ,Likelihood Functions ,Models ,Genetic ,Phylogeny ,Sequence Alignment ,Sequence Analysis ,DNA ,Skates ,Fish ,Mitogenome ,Phylogenetics ,Molecular clock ,Divergence times ,Manta ,Mobula ,Evolutionary Biology ,Genetics ,Zoology - Abstract
Manta and devil rays are an iconic group of globally distributed pelagic filter feeders, yet their evolutionary history remains enigmatic. We employed next generation sequencing of mitogenomes for nine of the 11 recognized species and two outgroups; as well as additional Sanger sequencing of two mitochondrial and two nuclear genes in an extended taxon sampling set. Analysis of the mitogenome coding regions in a Maximum Likelihood and Bayesian framework provided a well-resolved phylogeny. The deepest divergences distinguished three clades with high support, one containing Manta birostris, Manta alfredi, Mobula tarapacana, Mobula japanica and Mobula mobular; one containing Mobula kuhlii, Mobula eregoodootenkee and Mobula thurstoni; and one containing Mobula munkiana, Mobula hypostoma and Mobula rochebrunei. Mobula remains paraphyletic with the inclusion of Manta, a result that is in agreement with previous studies based on molecular and morphological data. A fossil-calibrated Bayesian random local clock analysis suggests that mobulids diverged from Rhinoptera around 30 Mya. Subsequent divergences are characterized by long internodes followed by short bursts of speciation extending from an initial episode of divergence in the Early and Middle Miocene (19-17 Mya) to a second episode during the Pliocene and Pleistocene (3.6 Mya - recent). Estimates of divergence dates overlap significantly with periods of global warming, during which upwelling intensity - and related high primary productivity in upwelling regions - decreased markedly. These periods are hypothesized to have led to fragmentation and isolation of feeding regions leading to possible regional extinctions, as well as the promotion of allopatric speciation. The closely shared evolutionary history of mobulids in combination with ongoing threats from fisheries and climate change effects on upwelling and food supply, reinforces the case for greater protection of this charismatic family of pelagic filter feeders.
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- 2015
26. Real-time ultrasound-guided bedside closure of arteriotomy wound using MANTA closure device during venoarterial extracorporeal membrane oxygenation decannulation.
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Au, Shek-Yin, Fong, Ka-Man, Ng, Wing-Yiu George, Lee, Kang-Yin Michael, So, Sheung-On, and Leung, Kit-Hung Anne
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ARTERIAL surgery , *SAFETY , *MEDICAL device removal , *ULTRASONIC imaging , *EXTRACORPOREAL membrane oxygenation , *HEMOSTASIS , *COMPRESSION therapy , *WOUND care , *VASCULAR closure devices - Abstract
Percutaneous closure of arteriotomy wound during peripheral venoarterial extracorporeal membrane oxygenation decannulation was shown to be safe and allow earlier mobilization. The new MantaTM vascular closure device (Essential Medical), designed for the closure of arterotomy wound created by large-bore vascular sheaths up to 25Fr during endovascular catheterization procedures, was reported to be applicable in venoarterial extracorporeal membrane oxygenation decannulation. In this article, we would like to share our experience of using real-time ultrasound guidance to ensure the safe application of Manta during bedside venoarterial extracorporeal membrane oxygenation decannulation. [ABSTRACT FROM AUTHOR]
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- 2021
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27. Suture- or Plug-Based Large-Bore Arteriotomy Closure: A Pilot Randomized Controlled Trial.
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van Wiechen, Maarten P., Tchétché, Didier, Ooms, Joris F., Hokken, Thijmen W., Kroon, Herbert, Ziviello, Francesca, Ghattas, Angie, Siddiqui, Saifullah, Laperche, Clémence, Spitzer, Ernest, Daemen, Joost, de Jaegere, Peter P., Dumonteil, Nicolas, and Van Mieghem, Nicolas M.
- Abstract
This study sought to test the superiority in terms of efficacy and safety of a dedicated plug-based vascular closure device (VCD) during transcatheter aortic valve replacement (TAVR) over a suture-based VCD. Vascular complications after TAVR are relevant and often associated with VCD failure. The MASH (MANTA vs. Suture-based vascular closure after transcatHeter aortic valve replacement) trial is an international, 2-center pilot randomized controlled trial comparing the MANTA VCD (Teleflex, Wayne, Pennsylvania) versus 2 ProGlides (Abbott Vascular, Abbott Park, Illinois). The primary composite endpoint consisted of access site–related major or minor vascular complications at 30-days' follow-up. Secondary endpoints included clinically relevant access site bleeding, time to hemostasis, and modified VCD failure (defined as failure to achieve hemostasis within 5 min or requiring additional endovascular maneuvers such as endovascular stenting, surgical techniques, or additional closure devices). Adverse events were adjudicated by an independent clinical events committee according to the VARC-2 definitions. A total of 210 TAVR patients were included between October 2018 and January 2020. Median age was 81 years, 54% were male, and the median STS score was 2.7%. There was no significant difference in the primary endpoint of access site–related vascular complications between MANTA and ProGlide (10% vs. 4%; p = 0.16). Clinically significant access site bleedings were similar with both closure techniques (9% vs. 6%; p = 0.57). Modified VCD failure occurred less frequently in MANTA versus ProGlide (20% vs. 40%; p < 0.01). Suture-based closure required more often additional closure devices, whereas MANTA numerically needed more covered stents and surgical bailouts. Plug-based large-bore arteriotomy closure was not superior to suture-based closure. Plug-based closure required fewer, but a different kind of bailout maneuvers. [ABSTRACT FROM AUTHOR]
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- 2021
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28. A single institution experience of the Manta closure device in endovascular aortic repair.
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Moonan A, Hameed A, Nachiappan S, Das N, Pantos A, Valencia D, Kaikini R, and Prashar A
- Abstract
Background: Majority of EVAR procedures are performed with percutaneous arterial access, unless there is severe steno-occlusive disease in the common femoral arteries (CFA). We present our experience of using MANTA closure device with a retrospective evaluation of its safety and efficacy, in the elective setting, and in the emergent setting for ruptured aortic aneurysm., Design and Methods: Between Feb 2021 and May 2023 a total of 75 EVAR procedures were closed with a Manta device. Data was collected prospectively and analysed retrospectively. In 75 patients, 128 CFAs were closed with a Manta closure device including 4 emergent ruptured aneurysms., Results: 67 male and 8 female patients with a median age of 77 years had percutaneous EVAR using Manta as a closure device. 128 CFAs were closed with Manta closure device. 3% (4/128) had deployment failures, with three requiring surgical cut down and closure. In one patient, a second Manta device deployment achieved satisfactory haemostasis. Three deployments were complicated by pseudoaneurysms of the CFA, all requiring no further interventions/treatment. No death related to severe haemorrhage from device failure. The pre- and post-procedure CFA puncture site AP diameter was recorded in a total of 106 cases with appropriate follow-up. 66% of these (70/106) had no reduction in CFA diameter post Manta closure. 34% (36/106) had some reduction of vessel AP size CFA post EVAR. No adverse features or further treatment was required due to reduction of vessel diameter in these cases (ongoing yearly surveillance)., Conclusions: Manta closure device is safe and easy to deploy with an overall success rate of 97%. There is a short learning curve. Ultrasound assessment and precise puncture at the healthy section of femoral artery are the key to achieve successful haemostasis with Manta closure device. Our findings suggest there is an association of non-clinically significant mild reduction in CFA vessel AP diameter post Manta closure device, which does not require further intervention., Competing Interests: Declaration of conflicting interestsThe author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.
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- 2024
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29. Access site complications after transfemoral aortic valve implantation - a comparison of Manta and ProGlide
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Pavel Hoffmann, Ahmed Al-Ani, Thomas von Lueder, Jenny Hoffmann, Peter Majak, Ove Hagen, Helga Loose, Nils Einar Kløw, and Anders Opdahl
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Transfemoral TAVI ,Vascular closure device ,ProGlide ,Manta ,Access site complications ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Abstract Background Despite decreasing sheath diameter, access site bleeding and vascular complications are still a major concern in transfemoral aortic valve implantation (TAVI), and may increase morbidity and even increase mortality. The aim was to compare safety of arterial closure in transfemoral TAVI with two different principles, pre-suture with ProGlide and collagen plug closure with Manta. Results Seventy-six patients treated with ProGlide and 75 with Manta were analysed. The endpoints were 1: access site vascular complications and 2: non-planned vascular or endovascular surgery at the puncture site. Complications occurred in 2 (2.7%) ProGlide and in 8 (10.7%) Manta cases, p = 0.047. During the learning phase there were no significant differences. In the established phase there was one event (2%) in the ProGlide group, compared to 6 endpoints (12.0%), p = 0.047, in the Manta group. Unplanned surgery or intervention was seen in two (2.7%) ProGlide and in 7 (9.3%) Manta patients, p = ns. There were no significant differences during the learning phase. In established use, endpoints occurred more frequently in patients treated with the Manta device (12%), than in patients treated with the ProGlide (2%), p = 0.047. Conclusion The ProGlide presuture closure device was associated with significantly lower rates of vascular complications and lower rates of surgery and interventions compared to the collagen plug Manta system. Trial registration The data were collected from Internal quality control registry on treatment of patients with valvular heart disease with or without coronary artery disease, No 2014/17280, Oslo University Hospital, Ullevål.
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- 2018
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30. THE TOURIST DEMAND FROM THE PERSPECTIVE OF THE MOTIVATION, ASSESSMENT AND SATISFACTION IN A SUN AND BEACH DESTINATION: THE MANTA CASE, ECUADOR
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Mauricio CARVACHE-FRANCO, Orly CARVACHE-FRANCO, Wilmer CARVACHE-FRANCO, Cesar VILLAGÓMEZ BUELE, and Marina ARTEAGA PEÑAFIEL
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Tourism ,demand ,motivation ,satisfaction ,assessment ,Manta ,Geography. Anthropology. Recreation ,Geography (General) ,G1-922 - Abstract
Conducting studies of motivation, evaluation and satisfaction of the demand of sun and beach tourism provides important information to adapt the products according to demand. The present study was conducted in situ in the city of Manta, Ecuador. Using a questionnaire, variant and bivariate statistical techniques were used to achieve the study objectives. The findings show that the main motivations of tourists are to rest, enjoy the beach and the sun, and enjoy the typical local gastronomy, which ratifies the main motivations in destinations with these characteristics. The most valuable aspects of the visit were the hospitality of the residents, the sun and the beach, and the restaurant service. The satisfaction of the destination is high, which shows the potential of this site for this type of tourism.
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- 2018
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31. Safety and Effectiveness of MANTA Vascular Closure Device After Large-Bore Mechanical Circulatory Support: Real-World Experience.
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Gupta, Ankur, Fouad, Lina, Basir, Mir, Neupane, Saroj, Zaidan, Mohammad, Koenig, Gerald, Alqarqaz, Mohammad, Villablanca, Pedro A., O'Neill, William W., and Alaswad, Khaldoon
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VASCULAR closure devices , *ARTERIAL puncture , *DUPLEX ultrasonography , *TERTIARY care , *ACADEMIC medical centers , *SURGICAL site , *HEMORRHAGE prevention , *INTRAVENOUS catheterization , *PROSTHETICS , *TIME , *SURGICAL hemostasis , *HEART assist devices , *RETROSPECTIVE studies , *TREATMENT effectiveness , *HEMORRHAGE - Abstract
Background: Real world safety and effectiveness of MANTA vascular closure device (VCD) for large bore arteriotomy closure after decannulation of mechanical circulatory support (MCS) devices is not known.Methods: All consecutive patients who underwent large bore arteriotomy closure with MANTA VCD following decannulation of MCS between February to October 2019 at a large tertiary care academic medical center were included. Safety and effectiveness of MANTA VCD was assessed on immediate post-closure angiogram for 23 access sites, and immediate post-closure duplex arterial ultrasound or manual vascular examination for 1 access site each. Technical success was defined as achievement of arteriotomy closure in absence of major bleeding or access site endovascular or surgical intervention.Results: A total of 25 MANTA VCD were placed in 22 unique patients by 7 different operators. A 14 Fr or 18 Fr MANTA VCD was used in 15 (60%) and 10 (40%) of deployments, respectively via transfemoral (n = 23, 92%) or transaxillary (n = 2, 8%) access. Technical success was achieved in 24 of 25 (96%) cases. Minor access site bleeding occurred in 3 patients (12%) and failure of MANTA VCD with major access site bleeding occurred in 1 patient (4%) requiring endovascular balloon tamponade. No cases of retroperitoneal bleeding, collagen plug embolization, covered stent placement, or surgical vascular repair were observed.Conclusion: In this single center experience, the use of MANTA VCD for large bore arteriotomy closure following percutaneous decannulation of MCS devices appears to be safe and effective. Larger multicenter studies of efficacy, safety, and cost-effectiveness are needed. [ABSTRACT FROM AUTHOR]- Published
- 2020
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32. The giant devil ray Mobula mobular (Bonnaterre, 1788) is not giant, but it is the only spinetail devil ray.
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Notarbartolo di Sciara, Giuseppe, Stevens, Guy, and Fernando, Daniel
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MOBULIDAE - Abstract
Mobula mobular, a mobulid species once considered a Mediterranean Sea endemic, has received its common name "giant devil ray" based on repeated misidentifications of oceanic manta rays, Mobula birostris, that had strayed into the Mediterranean, where they had never been reported from before. Based on the maximum known size (350 cm disc width) of M. mobular, when compared to some of its congenerics, the giant devil ray is not giant at all. A recent revision of the phylogeny and taxonomy of genus Mobula, which included, amongst other things, the decision to consider the circumtropical spinetail devil ray M. japanica a junior synonym of M. mobular, has caused the latter species to become circumglobal, and the only known mobulid with a tail spine. As a consequence, it is here recommended that the common name of M. mobular be "spinetail devil ray". [ABSTRACT FROM AUTHOR]
- Published
- 2020
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33. FACTORES DETERMINANTES EN LA FACTIVIDAD DE UNA RUTA AEREA, PERSPECTIVA DE LA DEMANDA: EL CASO MANTA-CUENCA.
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Basurto-Cedeño, Estefania M., Navarrete, Anthony, and Villacreses, Leonor
- Abstract
Copyright of TURyDES is the property of TURYDES and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2019
34. La cultura tributaria y su impacto en el cumplimiento de obligaciones tributarias del sector pesquero en el cantón Manta, Manabí, Ecuador, 2020
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Cedeño Mendoza, Alisson, Mendoza Fernández, Verónica, Cedeño Mendoza, Alisson, and Mendoza Fernández, Verónica
- Abstract
The importance of this study lies in recognizing the tax culture as a promoter of education regarding tax compliance issues, due to the bad tax actions by taxpayers in this industry. The purpose of this research was to analyze the impact of the tax culture on compliance with tax obligations of the fishing sector of the Manta canton. The methodology used has a mixed or quantitative-qualitative approach, where information gathering techniques such as interviews and surveys are applied, the scope was descriptive because the reality of the situation in the Manta fishing sector is described. The companies Seafman S.A. were taken as the object of study. and Pescapeces S.A., considered two prestigious fishing companies in the city and with the highest tariff contribution. The results obtained indicate the relevance of continuing with proposals for tax acculturation in these fishing companies, where the importance of having departments that are in charge of tax management, constant training for company personnel in the face of changes by the administration, is recognized. for proper compliance with tax obligations and considers the situations that put said compliance at risk. The tax culture is the best way to contribute to a society characterized by tax mismanagement and tax evasion, where it is necessary to intensify control and monitoring of large and small fishing industries to ensure correct tax application in their tax procedures., La importancia del presente estudio radica en reconocer a la cultura tributaria como eje promotor de la educación respecto a temas de cumplimiento fiscal, debido a los malas accionares tributarios por parte de los contribuyentes de esta industria. El propósito de esta investigación fue analizar el impacto de la cultura tributaria en el cumplimiento de las obligaciones tributarias del sector pesquero del cantón Manta. La metodología utilizada tiene un enfoque mixto o cuanti-cualitativo, donde se aplica las técnicas de recolección de información como la entrevista y la encuesta, el alcance fue descriptivo porque se describe la realidad de la situación en el sector pesquero de Manta. Se tomó como objeto de estudio las empresas Seafman S.A. y Pescapeces S.A., consideradas dos empresas pesqueras de prestigio en la ciudad y de mayor contribución arancelaria. Los resultados obtenidos indican la relevancia de continuar con propuestas de culturización tributaria en estas empresas pesqueras, donde se reconoce la importancia de contar con departamentos que se encarguen de la gestión tributaria, capacitación constante al personal de las empresas ante los cambios por parte de la administración tributaria para el buen cumplimiento de las obligaciones fiscales y se considera las situaciones que ponen en riesgo dicho cumplimiento. La cultura tributaria es la mejor forma de contribuir a una sociedad caracterizada por la mala gestión de tributos y evasión fiscal, donde es necesario intensificar el control y monitoreo a las grandes y pequeñas industrias pesqueras para asegurar la correcta aplicación fiscal en sus procedimientos tributarios.
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- 2023
35. MANTA and MANTA-RAy
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Wayne J. G. Hellstrom, Radboud J. E. M. Dolhain, Timothy E. Ritter, Timothy R. Watkins, Sarah J. Arterburn, Goele Dekkers, Angi Gillen, Caroline Tonussi, Leen Gilles, Alessandra Oortwijn, Katrien Van Beneden, Dick E. de Vries, Suresh C. Sikka, Dirk Vanderschueren, Walter Reinisch, and Rheumatology
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Rheumatoid diseases ,Janus kinase 1 preferential inhibitor ,MANTA ,MANTA-RAy ,Randomized controlled trials ,Reproductive health ,Pharmacology (medical) ,Filgotinib ,Semen parameters ,General Medicine ,Inflammatory bowel disease - Abstract
INTRODUCTION: The phase 2 MANTA and MANTA-RAy studies were developed in consultation with global regulatory authorities to investigate potential impacts of filgotinib, a Janus kinase 1 preferential inhibitor, on semen parameters in men with active inflammatory diseases. Here we describe the methods and rationale for these studies. METHODS AND RATIONALE: The MANTA and MANTA-RAy studies included men (aged 21-65 years) with active inflammatory bowel disease (IBD) and rheumatic diseases, respectively. Participants had no history of reproductive health issues, and the following semen parameter values (≥ 5th percentile of World Health Organization reference values) at baseline: semen volume ≥ 1.5 mL, total sperm/ejaculate ≥ 39 million, sperm concentration ≥ 15 million/mL, sperm total motility ≥ 40% and normal sperm morphology ≥ 30%. Each trial included a 13-week, randomized, double-blind, placebo-controlled period (filgotinib 200 mg vs placebo, up to N = 125 per arm), for pooled analysis of the week-13 primary endpoint (proportion of participants with ≥ 50% decrease from baseline in sperm concentration). All semen assessments were based on two samples (≤ 14 days apart) to minimize effects of physiological variation; stringent standardization processes were applied across assessment sites. From week 13, MANTA and MANTA-RAy study designs deviated owing to disease-specific considerations. All subjects with a ≥ 50% decrease in sperm parameters continued the study in the monitoring phase until reversibility, or up to a maximum of 52 weeks, with standard of care as treatment. Overall conclusions from MANTA and MANTA-RAy will be based on the totality of the data, including secondary/exploratory measures (e.g. sperm motility/morphology, sex hormones, reversibility of any effects on semen parameters). CONCLUSIONS: Despite the complexities, the MANTA and MANTA-RAy studies form a robust trial programme that is the first large-scale, placebo-controlled evaluation of potential impacts of an advanced IBD and rheumatic disease therapy on semen parameters. TRIAL REGISTRATION: EudraCT numbers 2017-000402-38 and 2018-003933-14; ClinicalTrials.gov identifiers NCT03201445 and NCT03926195. ispartof: ADVANCES IN THERAPY vol:39 issue:7 pages:3403-3422 ispartof: location:United States status: published
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- 2022
36. Particle size analyses of polydisperse liposome formulations with a novel multispectral advanced nanoparticle tracking technology.
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Singh, Pushpendra, Bodycomb, Jeffrey, Travers, Bill, Tatarkiewicz, Kuba, Travers, Sean, Matyas, Gary R., and Beck, Zoltan
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PARTICLE analysis , *PARTICLE size determination , *NANOPARTICLES , *NANOCARRIERS , *PARTICLE size distribution , *LIGHT scattering - Abstract
Liposomes are potent adjuvant constituents for licensed vaccines and vaccine candidates and carriers for drug delivery. Depending on the method of preparation, liposomes vary in size distribution, either forming uniform small size vesicles or a heterogeneous mixture of small to large vesicles. Importantly, differences in liposomal size have been demonstrated to induce differential immune responses. Determination of particle size distribution could therefore be crucial for the efficacy and stability of vaccine formulations. We compared the techniques of dynamic light scattering, laser diffraction, and conventional nanoparticle tracking analysis with a novel multispectral advanced nanoparticle tracking analysis (MANTA) for particle size determination of mono- and polydisperse liposomes. MANTA reported an average 146 nm size of monodisperse liposomes but showed a multimodal distribution of polydisperse liposomes with continuous sizes from 50 to 2000 nm. However, approximately 95% of particles were in the size range of 50–1500 nm and only few particles were identified in the 1500–2000 nm range for the investigated volume. Based on our results, we conclude that MANTA is the most suitable approach and can serve as stand-alone technique for particle size characterization of heterogeneous liposome samples in the 50–2000 nm size range. [ABSTRACT FROM AUTHOR]
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- 2019
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37. Venezuelan Migration, COVID-19 and Food (in)Security in Urban Areas of Ecuador
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Taymi Milán and Cheryl Martens
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displacement ,Global and Planetary Change ,Ecology ,Manta ,COVID-19 ,urbanization ,food security ,migration ,Quito ,Machala ,Huaquillas ,Latin America ,gender ,Venezuelan migrants ,Ecuador ,intersectionality ,resilience ,Nature and Landscape Conservation ,asylum seekers ,Portoviejo - Abstract
The forced migration of nearly 6 million Venezuelans is a global issue that is transforming urban contexts, particularly in Latin America. Ecuador is the third main recipient country of displaced Venezuelans. The lack of State migration policies and the deteriorating economic situation throughout the region have had significant impacts on migrants. While food security and migration have been studied extensively in Latin America, their intersection remains under-explored. Through a systematic review and focus group research, this exploratory study analyzes the food security conditions of Venezuelans in Ecuador and the impacts of the COVID-19 pandemic on the levels of food insecurity using an intersectional approach. Quantitative, systematic review results demonstrate that demands for food assistance outweighed the planning and provisions supplied by both state and non-state actors. Focus groups results support the findings from the systematic review and demonstrate that in the medium-sized port cities of Manta and Machala, food demands during the pandemic lockdown measures were met through the direct food supply and resilience strategies, including the securing of personal loans and bartering. In contrast, in the cities of Quito and Huaquillas, strict enforcement of COVID-19 lockdown measures, reduced access to work and systematic food access and increased reliance on food assistance from non-governmental actors. This study also found that the impacts of food (in)security in the context of COVID-19 disproportionately affected women in all cities, as they offered their food rations to meet the needs of their children, grandchildren, or other dependents.
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- 2023
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38. Refugios de hilo : El tejido como creador de sentido
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Solari Palacios, Sofía
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Hogar ,Nostalgia ,Abrigo ,Compartir ,Sentido ,Manta ,Recuerdos ,Experiencias ,Tejido ,Artes Plásticas - Abstract
Una autoexploración a través del hilo, un transitar-me convertido en tejido. La manta no solo como un conjunto de puntos sino como también un conjunto de recuerdos, experiencias, y pensamientos, propios y ajenos, que la han ido tejiendo simultáneamente. La manta expuesta es el resultado de una búsqueda personal del sentimiento de abrigo, de lo reconfortante de la nostalgia, que trascendió y se convirtió en algo distinto, una parte de mi que se desprendió y tomó su propio camino con hambre de ser algo más. Está obra no es sólo mía, la comparto con quienes me acompañaron en el proceso de tejido, consciente e inconscientemente, con los espacios transitados con ella y con quienes decidieron confesarle sus recuerdos y sentimientos., Facultad de Artes
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- 2022
39. Research Priorities to Support Effective Manta and Devil Ray Conservation
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Joshua D. Stewart, Fabrice R. A. Jaine, Amelia J. Armstrong, Asia O. Armstrong, Michael B. Bennett, Katherine B. Burgess, Lydie I. E. Couturier, Donald A. Croll, Melissa R. Cronin, Mark H. Deakos, Christine L. Dudgeon, Daniel Fernando, Niv Froman, Elitza S. Germanov, Martin A. Hall, Silvia Hinojosa-Alvarez, Jane E. Hosegood, Tom Kashiwagi, Betty J. L. Laglbauer, Nerea Lezama-Ochoa, Andrea D. Marshall, Frazer McGregor, Giuseppe Notarbartolo di Sciara, Marta D. Palacios, Lauren R. Peel, Anthony J. Richardson, Robert D. Rubin, Kathy A. Townsend, Stephanie K. Venables, and Guy M. W. Stevens
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manta ,mobula ,devil ray ,elasmobranch ,management ,Science ,General. Including nature conservation, geographical distribution ,QH1-199.5 - Abstract
Manta and devil rays are filter-feeding elasmobranchs that are found circumglobally in tropical and subtropical waters. Although relatively understudied for most of the Twentieth century, public awareness and scientific research on these species has increased dramatically in recent years. Much of this attention has been in response to targeted fisheries, international trade in mobulid products, and a growing concern over the fate of exploited populations. Despite progress in mobulid research, major knowledge gaps still exist, hindering the development of effective management and conservation strategies. We assembled 30 leaders and emerging experts in the fields of mobulid biology, ecology, and conservation to identify pressing knowledge gaps that must be filled to facilitate improved science-based management of these vulnerable species. We highlight focal research topics in the subject areas of taxonomy and diversity, life history, reproduction and nursery areas, population trends, bycatch and fisheries, spatial dynamics and movements, foraging and diving, pollution and contaminants, and sub-lethal impacts. Mobulid rays remain a poorly studied group, and therefore our list of important knowledge gaps is extensive. However, we hope that this identification of high priority knowledge gaps will stimulate and focus future mobulid research.
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- 2018
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40. The Cruise of three European Seas of RV Belgica/Boris Aleksandrov – Microplastics in seabed sediment and surface waters – including a comparison of devices for surface water sampling
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Dolle Madina, Lucia, Hübner, Paulina, Hanke, Georg, Ruiz, Luis, Slobodnik, Jaroslav, Oswald, Peter, Komorin, Viktor, Oleinik, Yurii, Nabokin, Mykhailo, Zotov, Andrii, and Fischer, Elke Kerstin
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sampling methods ,slurp system ,seabed sediments ,Manta ,pump ,surface water ,Nile Red - Abstract
As part of the handover of the research vessel Belgica recently renamed to "Boris Aleksandrov" from Belgium to Ukraine in autumn 2021, the transfer from Zeebrugge to Odessa was undertaken - the Cruise of Three European Seas of the RV Belgica (funded by European Union and the United Nations Development programme in the framework of the EU4EMBLAS project). This cruise was used to carry out measurement campaigns of various aspects, including the analysis of sediment and water samples for microplastics (MP). A special focus was put on the sampling of surface waters in a comparative study of three sampling systems: (1) Manta trawl, (2) volume water pump, and (3) Slurp system, a newly constructed pump system, providing a kind of basin where the surface water layer converges before being pumped off. During the cruise traversing the Atlantic Ocean, the Mediterranean Sea and the Black Sea a total number of 6 sediment samples and 23 water samples with different sampling systems were taken. Due to weather conditions, all three devices for water sampling could only be applied at two of the 18 stations simultaneously. At the MRC laboratory (Hamburg) sample preparation was done via digestion of the biogenic organic material (KOH/NaClO) and subsequent density separation (NaI ¿1.7 g/cm³) of sediment samples. Samples were transferred over a 40 µm sieve with Ethanol and stained with Nile Red (1 ml/mg in chloroform). Suspensions were transferred to aluminium oxide filters (Anodisc, 0.2 µm retention, 25/47 mm diameter) and investigated via fluorescence microscopy (AxioLab A.1, Zeiss, TRITC HC Filterset (AHF), 2.5x) for potential MP particles (numbers and dimensions). A subset of particles were investigated for their polymer composition with µRaman spectroscopy (DXR2xi Raman Imaging Microscope, Thermo Fisher Scientific). Results on MP abundance in sediments and water comparing different sampling devices will be introduced and discussed. Also see: https://micro2022.sciencesconf.org/426797/document, In MICRO 2022, Online Atlas Edition: Plastic Pollution from MACRO to nano
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- 2022
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41. Estudio comparativo de microclima y confort térmico en cañones urbanos. Aplicación a casos de estudio en Sevilla (España) y Manta (Ecuador)
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Loor Vera, María José, Rivera Gómez, Carlos Alberto, Roa Fernández, Jorge, and López Cabeza, Victoria Patricia
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Cañones urbanos ,Sevilla ,Urban heat island ,Isla de calor urbana ,Microclima ,Manta ,Seville ,Microclimate ,Urban canyons ,Thermal comfort ,Confort térmico - Abstract
El crecimiento descontrolado de las ciudades, en conjunto con la explotación de bienes y la acción humana han llevado a que el cambio climático sea cada vez más evidente. Consecuencias como la isla de calor urbana que afecta directamente a los centros urbanos, empeorando la calidad del aire y sensación de confort térmico en las personas, es lo que motiva a llevar a cabo un estudio donde se analice la influencia de las geometrías urbanas, con sus calles y edificaciones, en la creación de microclimas que ayuden a mitigar las altas temperaturas. En la actualidad existen numerosos estudios que analizan los escenarios más favorables para los cañones urbanos, tomando factores como la relación de aspecto, la orientación de las calles, los elementos de sombra, o, el tipo de vegetación que presentan, entre otros. Y, sabiendo que las condiciones climáticas son diferentes en cada zona urbana, resulta idóneo llevar el presente trabajo hacia una comparativa entre cañones urbanos en dos latitudes diferentes; la ciudad de Sevilla en España y la ciudad de Manta en Ecuador, que al ser constituidas en épocas diferentes y con morfologías distintas, es beneficioso identificar los factores más relevantes en la creación de microclimas agradables en cañones urbanos donde la radiación solar recibida es distinta. Además, con la ayuda de un índice Climático de índole universal, se pudo analizar los niveles de confort obtenidos para los cañones urbanos en estas ciudades. Posterior a la identificación de 4 tipologías arquetípicas de cañones para cada ciudad de estudio y mediante el uso del software ENVI-met 4.4.6. se han logrado simular 32 variaciones a las tipologías de cañones urbanos definidas. Se determinó aquella que es más favorable y funcional según su ubicación, destacando los cañones asimétricos sobre los simétricos, añadiéndole la orientación y vegetación adecuada. Es importante acotar que para ambas ciudades el nivel de confort térmico es variable dado que presentan condiciones térmicas distintas (temperatura del aire, humedad relativa, velocidad del viento), por lo que se debe considerar al momento de establecer qué variación de cañón urbano genera menos estrés térmico. The uncontrolled growth of cities, together with the exploitation of goods and human action, have led to climate change becoming increasingly evident. Consequences such as the urban heat island that directly affects urban centers, worsening air quality and feeling of thermal comfort in people, is what motivates to carry out a study where the influence of urban geometries, with their streets and buildings, is analyzed in the creation of microclimates that help mitigate high temperatures. Currently, there are numerous studies that analyze the most favorable scenarios for urban canyons, taking determinants such as the aspect ratio, the orientation of the streets, the shade elements, or the type of vegetation they present, among others. And, knowing that the climatic conditions are different in each urban area, it is ideal to take the present work towards a comparison between urban canyons in two different latitudes; the city of Seville in Spain and the city of Manta in Ecuador, which being constituted at different times and with different morphologies, it is beneficial to identify the most relevant factors in the creation of pleasant microclimates in urban canyons where the solar radiation received is different. In addition, with the help of an Universal Climate Index, it was possible to analyze the comfort levels obtained for urban canyons in these cities. After the identification of 4 archetypical canyon typologies for each studied city and using the ENVI-met 4.4.6 software, 32 variations of the defined urban canyon typologies have been simulated. The most favorable and functional city was determined according to its location, highlighting the asymmetric canyons over the symmetric ones, adding the appropriate orientation and vegetation. It is important to note that for both cities the level of thermal comfort is variable since they have different thermal conditions (air temperature, relative humidity, wind speed), so it should be considered when determining which urban canyon variation generates less thermal stress. Universidad de Sevilla. Máster en Ciudad y Arquitectura Sostenibles
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- 2022
42. THE TOURIST DEMAND FROM THE PERSPECTIVE OF THE MOTIVATION, ASSESSMENT AND SATISFACTION IN A SUN AND BEACH DESTINATION: THE MANTA CASE, ECUADOR.
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CARVACHE-FRANCO, Mauricio, CARVACHE-FRANCO, Orly, CARVACHE-FRANCO, Wilmer, VILLAGÓMEZ BUELE, Cesar, and ARTEAGA PEÑAFIEL, Marina
- Subjects
TOURIST attitudes ,CUSTOMER satisfaction ,GEOTOURISM ,ECOTOURISM ,BEACHES - Abstract
Conducting studies of motivation, evaluation and satisfaction of the demand of sun and beach tourism provides important information to adapt the products according to demand. The present study was conducted in situ in the city of Manta, Ecuador. Using a questionnaire, variant and bivariate statistical techniques were used to achieve the study objectives. The findings show that the main motivations of tourists are to rest, enjoy the beach and the sun, and enjoy the typical local gastronomy, which ratifies the main motivations in destinations with these characteristics. The most valuable aspects of the visit were the hospitality of the residents, the sun and the beach, and the restaurant service. The satisfaction of the destination is high, which shows the potential of this site for this type of tourism. [ABSTRACT FROM AUTHOR]
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- 2018
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43. Phylogeny of the manta and devilrays (Chondrichthyes: mobulidae), with an updated taxonomic arrangement for the family.
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WHITE, WILLIAM T., CORRIGAN, SHANNON, LEI YANG, HENDERSON, AARON C., BAZINET, ADAM L., SWOFFORD, DAVID L., and NAYLOR, GAVIN J. P.
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- *
NUCLEOTIDE sequencing , *PHYLOGENY , *CHONDRICHTHYES , *SPECIES hybridization , *BIOLOGICAL classification - Abstract
DNA sequence data from mitochondrial genomes and c. 1000 nuclear exons were analysed for a complete taxon sampling of manta and devilrays (Mobulidae) to estimate a current molecular phylogeny for the family. The resulting inferences were combined with morphological information to adopt an integrated approach to resolving the taxonomic arrangement of the family. The members of the genus Manta were found to consistently nest within the Mobula species and consequently the genus Manta is placed into the synonymy of Mobula. Mobula eregoodootenkee, M. japanica and M. rochebrunei were each found to be junior synonyms of M. kuhlii, M. mobular and M. hypostoma, respectively. The mitochondrial and nuclear tree topologies were in agreement except for the placement of M. tarapacana which was basal to all other mobulids in the nuclear exon analysis, but as the sister group to the M. alfredi- M. birostris-M. mobular clade in the mitochondrial genome analysis. Results from this study are used to a revise the taxonomy for the family Mobulidae. A single genus is now recognized (where there were previously two) and eight nominal species (where there were previously 11). [ABSTRACT FROM AUTHOR]
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- 2018
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44. La influencia de la segunda revolución industrial en la pesca de atunes del océano pacífico oriental ecuatoriano: siglo XX.
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Pico Lozano, Eduardo Xavier and Pico Lozano, Eduardo Xavier
- Abstract
Se explora descriptivamente el fenómeno de la segunda revolución industrial y su relación con la pesca del atún en la ciudad de Manta, Ecuador. Manta llegó a ser conocida como la capital mundial del atún en el siglo XX, y las transformaciones de este fenómeno pueden percibirse desde la cantonización de San Pablo de Manta, hasta el origen y desarrollo de la pesca del atún con fines de exportación. Metodológicamente hemos consultado fuentes transversales, como entrevistas personales, fuentes bibliográficas y documentales, de diferentes archivos internacionales, nacionales y locales., This article descriptively explores the phenomenon of the second industrial revolution and its relationship with tuna fishing in the city of Manta, Ecuador. Manta became known as the world capital of tuna in the 20th century, and the transformations of this phenomenon can be seen from the major government constitution of San Pablo de Manta, until the origin and development of tuna fishing for export purposes. Methodologically we have consulted cross sectorial sources, such as personal interviews, bibliographic and documentary sources, from different international, national and local archives.
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- 2022
45. La influencia de la segunda revolución industrial en la pesca de atunes del océano pacífico oriental ecuatoriano: siglo XX.
- Author
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Lozano, Eduardo Xavier Pico and Lozano, Eduardo Xavier Pico
- Abstract
This article descriptively explores the phenomenon of the second industrial revolution and its relationship with tuna fishing in the city of Manta, Ecuador. Manta became known as the world capital of tuna in the 20th century, and the transformations of this phenomenon can be seen from the major government constitution of San Pablo de Manta, until the origin and development of tuna fishing for export purposes. Methodologically we have consulted cross sectorial sources, such as personal interviews, bibliographic and documentary sources, from different international, national and local archives, Se explora descriptivamente el fenómeno de la segunda revolución industrial y su relación con la pesca del atún en la ciudad de Manta, Ecuador. Manta llegó a ser conocida como la capital mundial del atún en el siglo XX, y las transformaciones de este fenómeno pueden percibirse desde la cantonización de San Pablo de Manta, hasta el origen y desarrollo de la pesca del atún con fines de exportación. Metodológicamente hemos consultado fuentes transversales, como entrevistas personales, fuentes bibliográficas y documentales, de diferentes archivos internacionales, nacionales y locales
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- 2022
46. Estudio de las motivaciones y satisfacción de la demanda turística en torno a la gastronomía. Caso Manta, Ecuador
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Mauricio Carvache Franco, Wilmer Carvache Franco, Cesar Villagómez Buele, Grace Molina Bravo, and Marina Arteaga Peñafiel
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Demanda ,Gastronomía ,Motivaciones ,Satisfacción ,Manta ,Recreation leadership. Administration of recreation services ,GV181.35-181.6 ,The city as an economic factor. City promotion ,HT321-325 - Abstract
El estudio de motivaciones y satisfacción de la gastronomía permite conocer mejor al visitante para adaptar la oferta de un destino. El presente estudio se realizó in situ en la ciudad de Manta en Ecuador, destino que cuenta con una variada gastronomía típica de la región costa, donde se tomó un cuestionario que utilizando técnicas univariantes y bivariantes sirvió para obtener los resultados. Los hallazgos muestran que los principales motivos para comer en un restaurante en Manta son “porque me agrada comer en la playa”, “por consumir un plato típico” y “porque me gusta la comida del mar” Los aspectos del servicio más valorados fueron “la variedad de los platos” y “el servicio y cortesía de los empleados” El grado de satisfacción general es alto lo que ratifica que la gastronomía es un atractivo importante en este destino con potencial internacional.
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- 2017
47. PRODUÇÃO DE MANTA DE CONTENÇÃO A PARTIR DE FIBRA DE COCO VERDE
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Richard Antony Barbosa França, George Ribeiro Souza, Valdirene Aparecida da Silva, and Erika Peterson Gonçalves
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fibra de coco ,manta ,sustentabilidade ,resistência ,solo. ,General Works - Abstract
O uso de manta de contenção é um importante produto que auxilia na resistência de um solo evitando assim o desmoronamento de terra ou problemas com compactação de solo, ou até auxiliando na drenagem do solo. Alternativas vêm sendo testadas nesse meio, e aliado a crescente necessidade de produção de materiais sustentáveis, foi desenvolvida uma manta com fibras de coco verde, produto que é encontrado em grande quantidade no território brasileiro que ao se consumir o fruto, as cascas são descartadas no lixo. O objetivo desse trabalho é a confecção dessa manta, para que se possa usar em reforço ao solo e a sua comparação com a manta de poliéster, vendida no mercado atual, através de testes mecânicos.
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- 2017
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48. Large-bore arterial access closure after transcatheter aortic valve replacement: a systematic review and network meta-analysis
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Claudio Montalto, Andrea Raffaele Munafò, Luca Arzuffi, Francesco Soriano, Antonio Mangieri, Stefano Nava, Giovanni Luigi De Maria, Francesco Burzotta, Fabrizio D’Ascenzo, Antonio Colombo, Azeem Latib, Jacopo Andrea Oreglia, Adrian P Banning, Italo Porto, and Gabriele Crimi
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Settore MED/11 - MALATTIE DELL'APPARATO CARDIOVASCOLARE ,MANTA ,Vascular closure devices ,ProGlide ,TAVR ,Transcatheter aortic valve replacement - Abstract
Aims As the indications to transcatheter aortic valve replacement (TAVR) expand to patients at increasingly lower risk, procedure-related vascular and bleeding complications events must be minimized. We aimed to evaluate the impact of different large-bore arterial access closure devices on clinical outcomes after TAVR. Methods and results We searched for papers that reported outcomes according to the type of vascular closure device/technique used after TAVR and performed a Bayesian network meta-analysis (NMA). Fifteen studies involving 9259 patients who underwent access site closure using PROSTAR™ XL percutaneous vascular surgical system (Abbott Vascular, Santa Clara, CA, USA), Perclose ProGlide™ suture-mediated closure system (Abbott), or MANTATM vascular closure device (Teleflex, Morrisville, NC, USA) were included. NMA showed MANTA to have the highest likelihood of reducing a primary composite endpoint of intra-hospital death, major vascular complications, and major or life-threatening bleedings [surface under the cumulative ranking curve analysis (SUCRA) 94.8%], but this was mitigated when only randomized clinical trials and propensity-matched cohorts were included (SUCRA 56.1%). The ProGlide showed the highest likelihood to reduce major or life-threatening bleedings, especially with increasing procedural complexity, and the MANTA device to reduce major and minor vascular complications. The ProStar XL device performed poorly in all explored endpoints. Conclusion Available evidence summarized through a NMA shows that ProGlide and MANTA devices appear to be both valid vascular closure devices globally and to be the best options to minimize vascular complications and reduce bleeding in patients undergoing TAVR, respectively.
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- 2022
49. Kinematics and Hydrodynamics of Mobuliform Swimming: Oscillatory Winged Propulsion by Large Pelagic Batoids.
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Fish, Frank E., Dong, Flaibo, Zhu, Joseph J., and Bart-Smith, Hilary
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MYLIOBATIDAE ,HYDRODYNAMICS ,FISH kinematics ,PECTORAL fins ,PROPULSION systems ,AUTONOMOUS underwater vehicles - Abstract
Large, pelagic rays (family Myliobatidae) that swim by flapping movements of wing-like pectoral fins use the mobuliform mode of swimming. These rays have pectoral fins with a triangular planform and streamlined cross-sectional geometry that would minimize drag. Thrust is produced by vertical oscillations of the fins with spanwise and chordwise flexibility. The thrust is derived from lift generated by the fins. Speed is modulated by changes in oscillatory frequency, whereas the amplitude of heave remains relatively constant with speed. Mobuliform swimming is considered to be a highly efficient means of propulsion. The Strouhal number for different species of myliobatoid rays is within the optimal range for efficient propulsion, except at low swimming speeds. The design of the body, posture of the pectoral fins, and mode of swimming provide a stable platform to resist external and internal perturbations, while permitting maneuverability. The advantages of mobuliform swimming can be exploited through the biomimetic approach to develop a bioinspired autonomous underwater vehicle. [ABSTRACT FROM AUTHOR]
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- 2017
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50. Percutaneous Plug-Based Arteriotomy Closure Device for Large-Bore Access: A Multicenter Prospective Study.
- Author
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Van Mieghem, Nicolas M., Latib, Azeem, van der Heyden, Jan, van Gils, Lennart, Daemen, Joost, Sorzano, Todd, Ligthart, Jurgen, Witberg, Karin, de Kroon, Thom, Maor, Nathaniel, Mangieri, Antonio, Montorfano, Matteo, de Jaegere, Peter P., Colombo, Antonio, and Roubin, Gary
- Abstract
Objectives The authors sought to study the safety and efficacy of the MANTA Vascular Closure Device (VCD), a novel collagen-based technology dedicated to closure of large-bore arteriotomies. Background Novel transfemoral therapeutic interventions requiring large-bore catheters have become valid minimally invasive options but have inherent access management challenges. To date, no dedicated vascular closure devices exist for large arteriotomies. Methods A prospective, single-arm clinical investigation enrolling patients who underwent elective percutaneous interventions with large-bore catheters and planned percutaneous arteriotomy closure in 3 European institutions. Results A total of 50 patients with a mean age of 79.5 ± 8.3 years underwent high-risk percutaneous coronary intervention, balloon aortic valvuloplasty, or transcatheter aortic valve replacement with large-bore catheters sized 12-F to 19-F. MANTA closure was performed by 9 different operators. The 14-F MANTA VCD was deployed in one-third of the overall cohort (16 of 50, 32%), and the 18-F MANTA VCD in the remainder. The MANTA VCD was deployed successfully in all patients. The mean time to hemostasis was 2 min, 23 s. One patient had a major vascular and major bleeding complication with prolonged femoral bleeding that was successfully treated with a covered stent and eventual surgical repair. There were no other access site–related complications. Conclusions This first multicenter experience demonstrates rapid and reliable hemostasis and low complication rates with the use of the plug-based MANTA VCD for large-bore arteriotomy closure. [ABSTRACT FROM AUTHOR]
- Published
- 2017
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