2,866 results on '"K. Ota"'
Search Results
2. The effectiveness of meropenem and amikacin combination therapy against Carbapenemase-producing Klebsiella pneumoniae pneumonia mouse model
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K. Ota, N. Kaku, N. Uno, K. Sakamoto, Y. Morinaga, H. Hasegawa, T. Miyazaki, K. Izumikawa, H. Mukae, and K. Yanagihara
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Infectious and parasitic diseases ,RC109-216 - Published
- 2020
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3. Variability-Controlled HfZrO2 Ferroelectric Tunnel Junctions for Reservoir Computing
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K. Ota, M. Yamaguchi, S. Kabuyanagi, S. Fujii, M. Saitoh, and M. Yoshikawa
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Electrical and Electronic Engineering ,Electronic, Optical and Magnetic Materials - Published
- 2022
4. The Paper Artist
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E. K. Ota
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General Medicine - Published
- 2022
5. Catechol-O-methyltransferase (COMT) polymorphisms modulate working memory in individuals with schizophrenia and healthy controls
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Camila T. Matsuzaka, Denise Christofolini, Vanessa K. Ota, Ary Gadelha, Arthur A. Berberian, Cristiano Noto, Diego R. Mazzotti, Leticia M. Spindola, Patricia N. Moretti, Marilia A.C. Smith, Maria I. Melaragno, Sintia I. Belangero, and Rodrigo A. Bressan
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Cognition ,dopamine ,gene ,Psychiatry ,RC435-571 - Abstract
Objective: Cognitive impairment is a core feature of schizophrenia, related to dopaminergic dysfunction in the prefrontal cortex (PFC). It is hypothesized that functional single nucleotide polymorphism (SNP) rs4680 of the catechol-O-methyltransferase (COMT) gene could mediate the relationship between cognition and dopamine activity in the PFC. Other COMT SNPs could also play a role. Methods: We evaluated the role of three COMT SNPs (rs737865, rs165599, and rs4680) in schizophrenia and their impact on three working memory tasks. For genetic association analyses, 212 individuals with schizophrenia and 257 healthy controls (HCs) were selected. The Visual Working Memory (VWM) Task, Keep Track Task, and Letter Memory Task were administered to 133 schizophrenics and 93 HCs. Results: We found a significant association of rs737865, with the GG genotype exerting a protective effect and the GA haplotype (rs4680/rs165599) exerting a risk effect for schizophrenia. COMT rs4680 AA carriers and rs737865 AA carriers scored lowest on the Keep Track Task. When the genotype*group interaction effect was evaluated, rs165599 exerted opposite effects for VWM and Keep Track task performance in patients and controls, with AA carriers scoring lowest on both tests among controls, but highest among patients. Conclusion: These data support the hypothesis that COMT polymorphisms may be associated with schizophrenia and modulate cognition in patients and controls.
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- 2017
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6. Impact of Antimicrobial Use at the Start of Mechanical Ventilation on Ventilator-associated Lower Respiratory Tract Infections in Patients With Acute Respiratory Distress Syndrome Related to Coronavirus Disease 2019
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J. Ishii, M. Nishikimi, T. Shimatani, K. Ota, S. Ohshimo, and N. Shime
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- 2023
7. Hair cortisol in drug-naïve first-episode individuals with psychosis
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Elvis H. Andrade, Lucas B. Rizzo, Cristiano Noto, Vanessa K. Ota, Ary Gadelha, Ledo Daruy-Filho, Brazílio de C. Tasso, Rodrigo B. Mansur, Quirino Cordeiro, Síntia I. Belangero, Rodrigo A. Bressan, Rodrigo Grassi-Oliveira, and Elisa Brietzke
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First-episode psychosis ,schizophrenia ,cortisol ,stress ,Psychiatry ,RC435-571 - Abstract
Objectives: To compare hair cortisol concentrations (HCC) in drug-naïve first-episode psychosis (FEP) patients and healthy controls and to investigate the correlations between HCC and psychopathology. Methods: Twenty-four drug-naïve FEP patients and 27 gender- and age-matched healthy control subjects were recruited. The Structured Clinical Interview for DSM-IV (SCID-1) was used to confirm/rule out diagnoses, and the Positive and Negative Symptoms Scale (PANSS) was used to assess symptom severity. Hair samples (2-3 cm long) obtained from the posterior vertex region of the scalp were processed in 1-cm segments considering a hair growth rate of 1 cm per month. The 1-cm segments were classified according to their proximity to the scalp: segment A was the closest to the scalp and referred to the month prior to inclusion in the study. Segments B and C referred to the 2nd and 3rd months prior to the time of evaluation respectively. Hair steroid extraction was performed using a known protocol. Results: Two-way analysis of covariance (ANCOVA) with gender and age as covariates revealed a group effect (F1.106 = 4.899, p = 0.029) on HCC. Between-segment differences correlated with total PANSS score and with PANSS General Psychopathology subscale and total score. Conclusions: Our findings suggest that hypothalamic-pituitary-adrenal (HPA) axis, as assessed by long-term (3-month) cortisol concentration, is abnormal in the early stages of psychosis. The magnitude of changes in HCC over time prior to the FEP correlates to psychopathology. HPA axis abnormalities might begin prior to full-blown clinical presentation requiring hospital admission.
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- 2016
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8. Development of Anticorrosion Bars Coated by PVB Resin and Silica Sand
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K. Ota, S. Kajiwara, Y. Akira, and K. Takewaka
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General Materials Science - Published
- 2021
9. Online survey of genital and urinary symptoms among Japanese women aged between 40 and 90 years
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M. Hatta, H. Ohta, R. Yoshikata, K. Ota, and Stefano Salvatore
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Adult ,medicine.medical_specialty ,medicine.drug_class ,Urinary system ,030209 endocrinology & metabolism ,03 medical and health sciences ,0302 clinical medicine ,Japan ,Lower Urinary Tract Symptoms ,Quality of life ,Prevalence ,Humans ,Medicine ,Sex organ ,Aged ,Aged, 80 and over ,030219 obstetrics & reproductive medicine ,Urinary symptoms ,business.industry ,Obstetrics ,Obstetrics and Gynecology ,Questionnaire ,General Medicine ,Middle Aged ,Health Surveys ,Female Urogenital Diseases ,Dyspareunia ,Estrogen ,Female ,Menopause ,Symptom Assessment ,business - Abstract
The purpose of this survey was to assess the prevalence of genital and urinary tract symptoms among Japanese women with declining estrogen levels.A health-related questionnaire survey was conducted among women in their 40s or older to inquire about their genital, intercourse-related, and urinary symptoms and concern over their symptoms.Of the consecutive 10,000 respondents recruited, 4488 (44.9%) reported having symptoms: 3546 (79.0%) expressed concern over their symptoms. Furthermore, 2173 women (21.7%) had incontinence, 1999 (20.0%) had urinary frequency, 1648 (16.5%) had itching, and 1560 (15.6%) reported odor; these were followed by looseness, dryness, and burning. Of the 2518 (25.2%) sexually active women, 518 (20.6%) reported having dyspareunia and more reported having urinary symptoms than genital symptoms. Of the symptomatic respondents, 33.1% had genital symptoms alone, 28.4% had urinary symptoms alone, and 38.4% had both. More sexually active women had genital symptoms, while more sexually inactive women had urinary symptoms.Genital and urinary symptoms were shown to be common and coexist in a considerable proportion of the respondents, highlighting the pathology of genitourinary syndrome of menopause. Again, dyspareunia and lower urinary tract symptoms were shown to be quite common among postmenopausal women.
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- 2020
10. Development of a Wireless Acceleration Measurement System
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T. Yamasaki, K. Ota, M. Miyamoto, Y. Amano, M. Okada, and T. Kido
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The newly developed low-cost micro-electro-mechanical system (MEMS)-based acceleration sensors exhibit sufficient accuracy and stability to monitor the shaking of structures caused by an earthquake. We have developed a practical shaking-monitoring system using MEMS-based acceleration sensors and a 920 MHz multi-hop radio communication method that offers reliable radio wave communication, even within buildings. In this system, the base clock of each sensor unit must be closely synchronized to the master clock to minimize acceleration-induced phase synchronization error. In the proposed system, this error can be limited to three milliseconds in a system of multiple sensor units.
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- 2021
11. Simulating multi-hazard event sets for life cycle consequence analysis
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L. Iannacone, K. Otárola, R. Gentile, and C. Galasso
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Environmental technology. Sanitary engineering ,TD1-1066 ,Geography. Anthropology. Recreation ,Environmental sciences ,GE1-350 ,Geology ,QE1-996.5 - Abstract
In the context of natural hazard risk quantification and modeling of hazard interactions, some literature separates “Level I” (or occurrence) interactions from “Level II” (or consequence) interactions. The Level I interactions occur inherently due to the nature of the hazards, independently of the presence of physical assets. In such cases, one hazard event triggers or modifies the occurrence of another (e.g., flooding due to heavy rain, liquefaction and landslides triggered by an earthquake), thus creating a dependency between the features characterizing such hazard events. They differ from Level II interactions, which instead occur through impacts/consequences on physical assets/components and systems (e.g., accumulation of physical damage or social impacts due to earthquake sequences, landslides due to the earthquake-induced collapse of a retaining structure). Multi-hazard life cycle consequence (LCCon) analysis aims to quantify the consequences (e.g., repair costs, downtime, casualty rates) throughout a system’s service life and should account for both Level I and II interactions. The available literature generally considers Level I interactions – the focus of this study – mainly defining relevant taxonomies, often qualitatively, without providing a computational framework to simulate a sequence of hazard events incorporating the identified interrelations among them. This paper addresses this gap, proposing modeling approaches associated with different types of Level I interactions. It describes a simulation-based method for generating multi-hazard event sets (i.e., a sequence of hazard events and associated features throughout the system’s life cycle) based on the theory of competing Poisson processes. The proposed approach incorporates the different types of interactions in a sequential Monte Carlo sampling method. The method outputs multi-hazard event sets that can be integrated into LCCon frameworks to quantify interacting hazard consequences. An application incorporating several hazard interactions is presented to illustrate the potential of the proposed method.
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- 2024
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12. EP08.01-036 Low-dose EGFR-TKIs Directly Induce Maturation and Functional Activity of Human Dendritic Cells in an EGFR-independent manner
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H. Inoue, H. Tsutsumi, K. Okamura, K. Ota, Y. Yoneshima, E. Iwama, K. Tanaka, and I. Okamoto
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Pulmonary and Respiratory Medicine ,Oncology - Published
- 2022
13. Obsessive-Compulsive Symptoms, Polygenic Risk Score, and Thalamic Development in Children From the Brazilian High-Risk Cohort for Mental Conditions (BHRCS)
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Ana Beatriz Ravagnani Salto, Marcos L. Santoro, Marcelo Q. Hoexter, Andrea Parolin Jackowski, Pedro M. Pan, Maria Conceição Rosário, Sintia I. Belangero, Pedro Gomes Alvarenga, Victoria Fogaça Doretto, Afonso Mazine Tiago Fumo, Marcelo C. Batistuzzo, Pedro Macul Ferreira de Barros, Kiara R. Timpano, Vanessa K. Ota, Luis Augusto Rohde, Euripedes Constantino Miguel, James F. Leckman, and André Zugman
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Pediatrics ,medicine.medical_specialty ,Thalamus ,RC435-571 ,Volume change ,OCD-PRS ,03 medical and health sciences ,0302 clinical medicine ,Neuroimaging ,thalamus ,Medicine ,Symptom onset ,030304 developmental biology ,Psychiatry ,0303 health sciences ,neuroimaging ,business.industry ,Brief Research Report ,Obsessive compulsive symptoms ,obsessive-compulsive disorder ,Right thalamus ,Psychiatry and Mental health ,obsessive-compulsive symptoms ,Cohort ,polygenic risk score ,Polygenic risk score ,business ,030217 neurology & neurosurgery ,MRI - Abstract
Background: Thalamic volume measures have been linked to obsessive-compulsive disorder (OCD) in children and adolescents. However, it is unclear if alterations in thalamic volumes occur before or after symptom onset and if there is a relation to the presence of sub-clinical obsessive-compulsive symptoms (OCS). Here, we explore the relationship between OCS and the rate of thalamic volume change in a cohort of children and youth at high risk to develop a mental disorder. A secondary aim was to determine if there is a relationship between OCS and the individual's OCD polygenic risk score (OCD-PRS) and between the rate of thalamic volume change and the OCD-PRS.Methods: The sample included 378 children enrolled in the longitudinal Brazilian High-Risk Cohort for Mental Conditions. Participants were assessed for OCS and the symmetrized percent change (SPC) of thalamic volume across two time-points separated by 3 years, along with the OCD-PRS. Zero-altered negative binomial models were used to analyze the relationship between OCS and thalamic SPC. Multiple linear regressions were used to examine the relationship between thalamic SPC and OCD-PRS.Results: A significant relationship between OCS and the right thalamus SPC (p = 0.042) was found. There was no significant relationship between changes in thalamic volume SPC and OCD-PRS.Conclusions: The findings suggest that changes in the right thalamic volume over the course of 3 years in children may be associated to OCS. Future studies are needed to confirm these results and further characterize the specific nature of OCS symptoms associated with thalamic volumes.
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- 2021
14. POS-294 NEPHROLOGY REFERRAL SLOWS THE PROGRESSION OF CHRONIC KIDNEY DISEASE ESPECIALLY AMONG PATIENTS WITH PROTEINURIA OR ANEMIA: A SINGLE CENTER RETROSPECTIVE STUDY
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A. IDE, M. MURASHIMA, Y. Nishura, K. Ota, and T. Hamano
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Nephrology - Published
- 2022
15. PRODH polymorphisms, cortical volumes and thickness in schizophrenia.
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Vanessa K Ota, Fernanda T Bellucco, Ary Gadelha, Marcos L Santoro, Cristiano Noto, Denise M Christofolini, Idaiane B Assunção, Karen M Yamada, Andrea K Ribeiro-dos-Santos, Sidney Santos, Jair J Mari, Marília A C Smith, Maria I Melaragno, Rodrigo A Bressan, João R Sato, Andrea P Jackowski, and Sintia I Belangero
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Medicine ,Science - Abstract
Schizophrenia is a neurodevelopmental disorder with high heritability. Several lines of evidence indicate that the PRODH gene may be related to the disorder. Therefore, our study investigates the effects of 12 polymorphisms of PRODH on schizophrenia and its phenotypes. To further evaluate the roles of the associated variants in the disorder, we have conducted magnetic resonance imaging (MRI) scans to assess cortical volumes and thicknesses. A total of 192 patients were evaluated using the Structured Clinical Interview for DSM-IV (SCID), Positive and Negative Syndrome Scale (PANSS), Calgary Depression Scale, Global Assessment of Functioning (GAF) and Clinical Global Impression (CGI) instruments. The study included 179 controls paired by age and gender. The samples were genotyped using the real-time polymerase chain reaction (PCR), restriction fragment length polymorphism (RFLP)-PCR and Sanger sequencing methods. A sample of 138 patients and 34 healthy controls underwent MRI scans. One polymorphism was associated with schizophrenia (rs2904552), with the G-allele more frequent in patients than in controls. This polymorphism is likely functional, as predicted by PolyPhen and SIFT, but it was not associated with brain morphology in our study. In summary, we report a functional PRODH variant associated with schizophrenia that may have a neurochemical impact, altering brain function, but is not responsible for the cortical reductions found in the disorder.
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- 2014
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16. A pre-specified analysis of the Dapagliflozin and Prevention of Adverse Outcomes in Chronic Kidney Disease (DAPA-CKD) randomized controlled trial on the incidence of abrupt declines in kidney function
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Hiddo J.L. Heerspink, David Cherney, Douwe Postmus, Bergur V. Stefánsson, Glenn M. Chertow, Jamie P. Dwyer, Tom Greene, Mikhail Kosiborod, Anna Maria Langkilde, John J.V. McMurray, Ricardo Correa-Rotter, Peter Rossing, C. David Sjöström, Robert D. Toto, David C. Wheeler, Glenn Chertow, Fan Fan Hou, John McMurray, Robert Toto, Bergur Stefansson, L.E. Maffei, P. Raffaele, S.E. Solis, C.A. Arias, D. Aizenberg, C. Luquez, C. Zaidman, N. Cluigt, M. Mayer, A. Alvarisqueta, A. Wassermann, R. Maldonado, J. Bittar, M. Maurich, L.E. Gaite, N. Garcia, L. Sivak, P.O. Ramallo, J.C. Santos, R. Garcia Duran, J.A. Oddino, A. Maranon, L.N. Maia, D.D. Avila, E.J.G. Barros, M.H. Vidotti, D. Panarotto, I.D.L. Noronha, L.A.A. Turatti, L. Deboni, M.E. Canziani, M.C. Riella, M.R. Bacci, R.P. Paschoalin, R.J. Franco, J.C. Goldani, E. St-Amour, A.W. Steele, R. Goldenberg, S. Pandeya, H. Bajaj, D. Cherney, S.M. Kaiser, J.R. Conway, S.S. Chow, G. Bailey, J. Lafrance, J. Winterstein, S. Cournoyer, D. Gaudet, F. Madore, R.L. Houlden, A. Dowell, M. Langlois, N. Muirhead, H. Khandwala, A. Levin, F. Hou, Y. Xue, L. Zuo, C. Hao, Z. Ni, C. Xing, N. Chen, Y. Dong, R. Zhou, X. Xiao, Y. Zou, C. Wang, B. Liu, Q. Chen, M. Lin, Q. Luo, D. Zhang, J. Wang, M. Chen, X. Wang, A. Zhong, J. Dong, C. Zhu, T. Yan, P. Luo, Y. Ren, P. Pai, D. Li, R. Zhang, J. Zhang, M. Xu, Y. Zhuang, Y. Kong, X. Yao, X. Peng, F.I. Persson, T.K. Hansen, R. Borg, U. Pedersen Bjergaard, D. Hansen, M. Hornum, H. Haller, G. Klausmann, D. Tschope, T. Kruger, P. Gross, C. Hugo, N. Obermuller, L. Rose, P. Mertens, H. Zeller-Stefan, A. Fritsche, L. Renders, J. Muller, K. Budde, B. Schroppel, I. Wittmann, P. Voros, M. Dudas, G.A. Tabak, R. Kirschner, A. Letoha, I. Balku, Z. Hermanyi, G. Zakar, I. Mezei, G.G. Nagy, J. Lippai, A. Nemeth, D. Khullar, P.K. Gowdaiah, E. Fernando Mervin, V.A. Rao, D. Dewan, K. Goplani, V.S.K. Maddi, M.S. Vyawahare, R.K. Pulichikkat, R. Pandey, S.K. Sonkar, V.K. Gupta, S. Agarwal, A.J. Asirvatham, A. Ignatius, S. Chaubey, S. Melemadathil, H. Alva, Y. Kadam, H. Shimizu, A. Sueyoshi, H. Takeoka, Y. Abe, T. Imai, Y. Onishi, Y. Fujita, Y. Tokita, M. Oura, Y. Makita, A. Idogaki, R. Koyama, H. Kikuchi, N. Kashihara, T. Hayashi, Y. Ando, T. Tanaka, M. Shimizu, S. Hidaka, T. Gohda, K. Tamura, M. Abe, Y. Kamijo, T. Imasawa, Y. Takahashi, M. Nakayama, M. Tomita, F. Hirano, Y. Fukushima, A. Kiyosue, S. Kurioka, E. Imai, K. Kitagawa, M. Waki, J. Wada, K. Uehara, H. Iwatani, K. Ota, S. Shibazaki, K. Katayama, I. Narita, M. Iinuma, S. Matsueda, S. Sasaki, A. Yokochi, T. Tsukamoto, T. Yoshimura, S. Kang, S. Lee, C.S. Lim, H. Chin, K.W. Joo, S.Y. Han, T.I. Chang, S. Park, H. Park, C.W. Park, B.G. Han, D.R. Cha, S.A. Yoon, W. Kim, S.W. Kim, D. Ryu, R. Correa Rotter, S.S. Irizar Santana, G. Hernandez Llamas, R. Valdez Ortiz, N.C. Secchi Nicolas, G. Gonzalez Galvez, J.R. Lazcano Soto, T. Bochicchio Riccardelli, E.A. Bayram Llamas, D.R. Ramos Ibarra, M.G.S. Melo, J.G. Gonzalez Gonzalez, J.H. Sanchez Mijangos, M. Madero Robalo, A. Garcia Castillo, H.A. Manrique, J.C. Farfan, R. Vargas, A. Valdivia, A. Dextre, E. Escudero, J.R. Calderon Ticona, L. Gonzales, J. Villena, L. Leon, G. Molina, A. Saavedra, E. Garrido, H. Arbanil, S. Vargas Marquez, J. Rodriguez, R. Isidto, A.J. Villaflor, M.A. Gumba, L. Tirador, R.S. Comia, R.A. Sy, M.L.V.V. Guanzon, G. Aquitania, N.C. De Asis, A.A. Silva, C.M. Romero, M.E. Lim, R.A. Danguilan, M. Nowicki, H. Rudzki, K. Landa, I. Kucharczyk-Bauman, B. Gogola-Migdal, M. Golski, A. Olech-Cudzik, T. Stompor, T. Szczepanik, B. Miklaszewicz, R. Sciborski, M. Kuzniewski, K. Ciechanowski, D. Wronska, W. Klatko, S. Mazur, G. Popenda, M. Myslicki, L.Z. Bolieva, S. Berns, A. Galyavich, T. Abissova, I. Karpova, D. Platonov, N. Koziolova, L. Kvitkova, R. Nilk, T. Medina, A. Rebrov, M. Rossovskaya, I. Sinitsina, E. Vishneva, N. Zagidullin, T. Novikova, N. Krasnopeeva, O. Magnitskaya, N. Antropenko, M. Batiushin, V. Escudero Quesada, C. Barrios Barrea, E. Espinel Garauz, J.M. Cruzado Garrit, C. Morales Portillo, J.L. Gorriz Teruel, S. Cigarran Guldris, M. Praga Terente, N.R. Robles Perez-Monteoliva, F.J. Tinahones Madueno, A. Soto Gonzalez, C. Diaz Rodriguez, H. Furuland, A. Saeed, K. Dreja, J. Spaak, A. Bruchfeld, M. Kolesnyk, O. Levchenko, N. Pyvovarova, V. Stus, V. Doretskyy, N. Korobova, O. Horoshko, I. Katerenchuk, Y.M. Mostovoy, M. Orynchak, O. Legun, I. Dudar, O. Bilchenko, S. Andreychyn, A. Levchenko, L. Zub, N. Tereshchenko, I. Topchii, T. Ostapenko, S. Bezuglova, M. Kopytsya, O. Turenko, P. Mark, J. Barratt, S. Bhandari, D. Fraser, P. Kalra, S.P. Kon, K. Mccafferty, A. Mikhail, O.P. Alvarado, R. Anderson, N.S. Andrawis, A. Arif, S.A. Benjamin, G. Bueso, R.S. Busch, K.W. Carr, P. Crawford, N. Daboul, G.M. De La Calle, B. Delgado, J. Earl, M.A. El-Shahawy, R.J. Graf, G. Greenwood, A. Guevara, E.M. Wendland, R.K. Mayfield, M. Montero, D.J. Morin, P. Narayan, V. Numrungroad, A.C. Reddy, R. Reddy, M.B. Samson, R. Trejo, M.B. Butcher, J.K. Wise, L.R. Zemel, M. Raikhel, D. Weinstein, P. Hernandez, A. Wynne, B.V. Khan, G.A. Sterba, A. Jamal, D. Ross, S.F. Rovner, A. Tan, F. Ovalle, R.J. Patel, J. Talano, D.R. Patel, A. Burgner, N. Aslam, M. Elliott, S. Goral, A. Jovanovich, J.A. Manley, K. Umanath, D. Waguespack, D. Weiner, M. Yu, L. Schneider, D. Jalal, T. Le, N. Nguyen, H. Nguyen, D. Nguyen, V. Nguyen, T. Do, P. Chu, D. Ta, N. Tran, B. Pham, Marc A. Pfeffer, Stuart Pocock, Karl Swedberg, Jean L. Rouleau, Nishi Chaturvedi, Peter Ivanovich, Andrew S. Levey, Heidi Christ-Schmidt, Claes Held, Christina Christersson, Johannes Mann, Christoph Varenhorst, Real World Studies in PharmacoEpidemiology, -Genetics, -Economics and -Therapy (PEGET), Groningen Kidney Center (GKC), Life Course Epidemiology (LCE), and Value, Affordability and Sustainability (VALUE)
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Adult ,medicine.medical_specialty ,Urology ,Renal function ,Placebo ,Kidney ,chemistry.chemical_compound ,Glucosides ,medicine ,Humans ,Cardiac and Cardiovascular Systems ,Dapagliflozin ,Benzhydryl Compounds ,Renal Insufficiency, Chronic ,Sodium-Glucose Transporter 2 Inhibitors ,Creatinine ,Kardiologi ,business.industry ,Incidence ,Hazard ratio ,Acute kidney injury ,dapagliflozin ,medicine.disease ,chemistry ,acute kidney injury ,Diabetes Mellitus, Type 2 ,Nephrology ,Albuminuria ,medicine.symptom ,business ,chronic kidney disease ,SGLT2 inhibitors ,Kidney disease ,Glomerular Filtration Rate - Abstract
This pre-specified analysis of DAPA-CKD assessed the impact of sodium-glucose cotransporter 2 inhibition on abrupt declines in kidney function in high-risk patients based on having chronic kidney disease (CKD) and substantial albuminuria. DAPA-CKD was a randomized, double-blind, placebo-controlled trial that had a median follow-up of 2.4 years. Adults with CKD (urinary albumin-to-creatinine ratio 200-5000 mg/g and estimated glomerular filtration rate 25-75 mL/min/1.73m2) were randomized to dapagliflozin 10 mg/day matched to placebo (2152 individuals each). An abrupt decline in kidney function was defined as a pre-specified endpoint of doubling of serum creatinine between two subsequent study visits. We also assessed a post-hoc analysis of investigator-reported acute kidney injury-related serious adverse events. Doubling of serum creatinine between two subsequent visits (median time-interval 100 days) occurred in 63 (2.9%) and 91 (4.2%) participants in the dapagliflozin and placebo groups, respectively (hazard ratio 0.68 [95% confidence interval 0.49, 0.94]). Accounting for the competing risk of mortality did not alter our findings. There was no heterogeneity in the effect of dapagliflozin on abrupt declines in kidney function based on baseline subgroups. Acute kidney injury-related serious adverse events were not significantly different and occurred in 52 (2.5%) and 69 (3.2%) participants in the dapagliflozin and placebo groups, respectively (0.77 [0.54, 1.10]). Thus, in patients with CKD and substantial albuminuria, dapagliflozin reduced the risk of abrupt declines in kidney function. HJLH and DC are co-primary authors. The DAPA-CKD Trial Committees and Investigators are listed in the Appendix.
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- 2021
17. Pseudoaneurysm of the superficial femoral artery after retrograde intramedullary nailing for a supracondylar femoral fracture
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Hirota, Ryosuke, Ito, Toshiro, Emori, Makoto, Watanabe, K ota, Hirano, Akira, Kamiya, Tomoaki, Terashima, Yoshinori, and Yamashita, Toshihiko
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- 2014
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18. The Impact of No Next of Kin Decision Makers on End-of-Life Care
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Ryan K Ota, Trevor A. Pickering, Haig A Yenikomshian, Warren L. Garner, Maxwell B Johnson, and T Justin Gillenwater
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Male ,medicine.medical_specialty ,Palliative care ,Next of kin ,Surrogate decision-maker ,Decision Making ,03 medical and health sciences ,0302 clinical medicine ,Medicine ,Humans ,Family ,030212 general & internal medicine ,Retrospective Studies ,Body surface area ,Terminal Care ,Burn therapy ,business.industry ,Rehabilitation ,030208 emergency & critical care medicine ,Middle Aged ,Family medicine ,Cohort ,Emergency Medicine ,Surgery ,Female ,business ,Burns ,End-of-life care ,Total body surface area - Abstract
For critically ill burn patients without a next of kin, the medical team is tasked with becoming the surrogate decision maker. This poses ethical and legal challenges for burn providers. Despite this frequent problem, there has been no investigation of how the presence of a next of kin affects treatment in burn patients. To evaluate this relationship, a retrospective chart review was performed on a cohort of patients who died during the acute phase of their burn care. Variables collected included age, gender, length of stay, total body surface area, course of treatment, and presence of a next of kin. In total, 67 patients met the inclusion criteria. Of these patients, 14 (21%) did not have a next of kin involved in medical decisions. Patients without a next of kin were significantly younger (P = .02), more likely to be homeless (P < .01), had higher total body surface area burns (P = .008), had shorter length of stay (P < .001), and were five times less likely to receive comfort care (P = .01). Differences in gender and ethnicity were not statistically significant. We report that patients without a next of kin present to participate in medical decisions are transitioned to comfort care less often despite having a higher burden of injury. This disparity in standard of care demonstrates a need for a cultural shift in burn care to prevent the suffering of these marginalized patients. Burn providers should be empowered to reduce suffering when no decision maker is present.
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- 2020
19. Numerical simulation of non-uniform bed-load transport using a Lagrangian method and probabilistic Exner equation
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K. Ota and T. Sato
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symbols.namesake ,Computer simulation ,symbols ,Probabilistic logic ,Applied mathematics ,Exner equation ,Lagrangian ,Mathematics ,Bed load - Published
- 2020
20. Role of green hydrogen for our sustainable growth
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K. Ota and A. Ishihara
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Hydrogen ,business.industry ,chemistry.chemical_element ,Renewable energy ,chemistry ,Environmental science ,Energy supply ,Secondary energy ,business ,Sustainable growth rate ,Process engineering ,Entropy (arrow of time) ,Human society ,Global environmental analysis - Abstract
The global environment, including human society, should commit to harmonizing with Earth, and global material cycles play an important role in this regard. In this chapter, we clarify that materials are circulated via the low entropy of sunlight and this low entropy is transferred to maintain self-regulating activity through a material circulation cycle. This is an ideal state, in which the constancy and stability of Earth, including self-regulating systems, could be guaranteed. From the viewpoint of entropy, the ideal energy supply system must be based on the circulation of materials. When hydrogen is chosen as a secondary energy, the circulation of water, which is an oxidative state of hydrogen, may apply. From the viewpoint of entropy flow, a hydrogen-based energy system is the ideal energy system that mankind should pursue, as the circulation of materials is almost perfect and produced entropy can be discarded by heat. Green hydrogen, a clean energy carrier made by the application of renewable energies to water, is thus a key aspect for a clean energy system.
- Published
- 2020
21. Contributors
- Author
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Antonino S. Aricò, Giulia Azzato, Rachel Backhouse, Daniela Barba, Angelo Basile, Stefano Bellini, Alessandro Blasi, Ulf Bossel, Karel Bouzek, Giampaolo Caputo, Alessio Caravella, M. Colozzi, Núria J. Divins, Giuseppe Fiorenza, Pierre Fontanille, Fausto Gallucci, Alberto Giaconia, Antonella Giannini, Laila Grahl-Madsen, Ben Green, Daniel A. Greenhalgh, Viktor Hacker, K. Hemmes, Jaromír Hnát, G. Iaquaniello, Gaetano Iaquaniello, A. Ishihara, Adolfo Iulianelli, Michael Lammer, Jordi Llorca, Marco Martino, Stephen J. McPhail, Eugenio Meloni, Maryam Meshksar, Giulia Monteleone, Barbara Morico, L. Mosca, Claudio Oldani, K. Ota, Mario Pagliaro, Martin Paidar, Vincenzo Palma, Emma Palo, Mohammad Reza Rahimpour, Tayebe Roostaie, Concetta Ruocco, Annarita Salladini, Isabel Serrano, Stefania Siracusano, Lluís Soler, Yu Sun, S. Taraschi, V. Teplyakov, Stefano Tonella, Luca Turchetti, Xavier Vendrell, and Alessandra Verardi
- Published
- 2020
22. POS-329 EFFECTS OF COMBINATION OF RTA dh404 AND DAPAGLIFLOZIN ON RENAL INVOLVEMENT AND BODY COMPOSITION IN EXPERIMENTAL RAT MODEL OF DIABETIC KIDNEY DISEASE
- Author
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K. FUKAMI, K. Ota, G. Kodama, Y. Yokota, M. Shinohara, and S. Ito
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Nephrology - Published
- 2022
23. Construction and usability of community health nursing database in rural north-eastern Thailand
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L. Piyabanditkul, K Ota, N Arakawa, and M. Ishikawa
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Adult ,Male ,Rural Population ,Information management ,Databases, Factual ,computer.software_genre ,Health informatics ,Health Information Systems ,03 medical and health sciences ,Nursing care ,0302 clinical medicine ,Nursing ,Health care ,Humans ,030212 general & internal medicine ,General Nursing ,Health policy ,030504 nursing ,Database ,business.industry ,Information technology ,Focus Groups ,Middle Aged ,Community Health Nursing ,Thailand ,Nursing care quality ,Community health ,Female ,Business ,0305 other medical science ,computer - Abstract
Introductions Digitization could be incorporated in rural areas of resource-poor countries because information gathered by nurses working on-site could be better used. Background For effective management of community health information, the usage and maintenance of digital records are important. Digitization of information provides essential information for informing health policy. Aim To develop a sustainable database to effectively collect and manage community health information and nursing practice. Methods This study used a mixed method design. Phase 1 involved the development of a database system through repeated systematic focus group discussions with community health nurses. Phase 2 involved a practical trial examination of the developed system with both objective and subjective evaluations. Results A nursing database system was developed with templates designed for the major health problems of communities. The templates were composed of multiple-choice items and a free-text field that allowed records to be more detailed than handwritten records and maintained in standardized formats. This enables accumulation of data that were less likely to be influenced by the variance of ability in each nurse. Discussion and conclusion A multifaceted evaluation of the database system suggested that it could improve the efficiency of information management and contribute to the improvement of nursing care quality through standardization of the recording pattern. Implications for nursing and health policy The nursing database will enable high-quality information storage that will potentially better inform health and healthcare policies as well as enable visualization of data concerning nursing care challenges and activities within the relevant communities. This information is essential for policy development and implementation in areas of human and fiscal resource allocations and meeting training/education needs.
- Published
- 2018
24. A nationwide survey of intravenous antimicrobial use in intensive care units in Japan
- Author
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Tetsu Ohnuma, Yoshiro Hayashi, Kazuto Yamashita, John Marquess, Alan Kawarai Lefor, Masamitsu Sanui, K. Andoh, M. Egi, M. Fujita, S. Fujitani, Y. Gushima, K. Hagiya, H. Hagiya, T. Ide, Y. Iizuka, T. Ohnuma, T. Itagaki, T. Ito, M. Ito, Y. Iwashita, J. Izawa, S. Izuta, K. Kabutan, M. Kamochi, M. Kashiura, K. Matsuo, H. Matsushima, D. Miyazaki, M. Miyazu, I. Nagata, T. Takei, H. Nagatani, M. Nakagawa, M. Nakane, K. Nishi, M. Noguchi, T. Nomura, S. Nunomiya, T. Obayashi, T. Oda, K. Oe, K. Ota, N. Saito, S. Sako, M. Sekino, R. Seo, Y. Shiino, N. Shime, K. Shimizu, K. Takada, K. Takimoto, M. Taneda, K. Uehara, K. Unemoto, T. Yamada, and H. Yasuda
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Male ,0301 basic medicine ,Microbiology (medical) ,Carbapenem ,medicine.medical_specialty ,health care facilities, manpower, and services ,030106 microbiology ,Drug resistance ,Drug Prescriptions ,law.invention ,Antimicrobial Stewardship ,03 medical and health sciences ,0302 clinical medicine ,Japan ,law ,Drug Resistance, Multiple, Bacterial ,Surveys and Questionnaires ,Intensive care ,medicine ,Humans ,Antimicrobial stewardship ,Pharmacology (medical) ,030212 general & internal medicine ,Medical prescription ,Aged ,Antiinfective agent ,business.industry ,General Medicine ,Odds ratio ,Intensive care unit ,Anti-Bacterial Agents ,Intensive Care Units ,Cross-Sectional Studies ,Infectious Diseases ,Carbapenems ,Emergency medicine ,Administration, Intravenous ,Female ,business ,medicine.drug - Abstract
Although most patients in the intensive care unit (ICU) receive antibiotics, little is known about patterns of antibiotic use in ICUs in Japan. The objective of this study was to evaluate the pattern of antibiotic use in ICUs. A nationwide one-day cross-sectional surveillance of antibiotic use in the ICU was conducted three times between January 2011 and December 2011. All patients aged at least16 years were included. Data from 52 ICUs and 1148 patients were reviewed. There were 1028 prescriptions for intravenous antibiotics. Of 1148 patients, 834 (73%) received at least one intravenous antibiotic, and 575 had at least one known site of infection. Respiratory and intra-abdominal infections were the two most common types. Of 1028 prescriptions, 331 (34%) were for surgical or medical prophylaxis. Excluding prophylaxis, carbapenems were the most commonly prescribed agent. Infectious disease consultations, pre- and post-prescription antimicrobial stewardship, and ICU-dedicated antibiograms were available in 44%, 52%, 77%, and 21% of the ICUs, respectively. In logistic regression analysis adjusting for patient characteristics, treatment in a university hospital (adjusted odds ratio, 1.72; 95% CI, 1.05–2.84; P = 0.033) and an open ICU (adjusted odds ratio, 2.30; 95% CI, 1.02–5.17; P = 0.044) were significantly associated with greater likelihood of carbapenem use. An increase in the number of closed ICUs and more intensive care specialists may reduce carbapenem use in Japanese ICUs. Large-scale epidemiological studies of antimicrobial resistance in the ICU are needed.
- Published
- 2018
25. Field Emission Characteristics of Metal-Coated Nanocrystalline Diamond Films
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Yuta Kaneko, Kungen Teii, Kosuke Terada, Yoshimine Kato, and K. Ota
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010302 applied physics ,Materials science ,business.industry ,Nanocrystalline diamond ,02 engineering and technology ,021001 nanoscience & nanotechnology ,01 natural sciences ,Electronic, Optical and Magnetic Materials ,Metal ,Field electron emission ,visual_art ,0103 physical sciences ,visual_art.visual_art_medium ,Optoelectronics ,0210 nano-technology ,business - Published
- 2018
26. Assessment of body composition in patients with crohn’s disease using bioelectrical impedance analysis
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M. Mineki, N. Shinohara, R. Okamoto, Kento Takenaka, Y. Matsushita, Kazuo Ohtsuka, Toshimitsu Fujii, Y. Ithui, Masakazu Nagahori, K. Saito, and K. Ota
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medicine.medical_specialty ,Crohn's disease ,Nutrition and Dietetics ,business.industry ,Endocrinology, Diabetes and Metabolism ,Internal medicine ,medicine ,In patient ,business ,medicine.disease ,Bioelectrical impedance analysis ,Gastroenterology - Published
- 2021
27. Silk and Dust
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E. K. Ota
- Subjects
Literature ,Engineering ,SILK ,business.industry ,General Medicine ,business - Published
- 2017
28. 1 The Impact of No Next of Kin Decision Makers on End-of-life Care
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Haig A Yenikomshian, Justin Gillenwater, Warren L Garner, Trevor A Pickering, Maxwell B Johnson, and Ryan K Ota
- Subjects
Rehabilitation ,Emergency Medicine ,Surgery - Abstract
Introduction For critically ill burn patients without a next of kin (NOK), the medical team is tasked with becoming the surrogate decision maker. This poses difficult ethical and legal challenges for burn providers. Despite this frequent problem, there has been no investigation of how the presence of a NOK affects treatment in burn patients. This study is the first to evaluate this relationship. Methods A retrospective chart review was performed on a cohort of patients who died during the acute phase of their burn care from a single burn center from 2015 to 2019. Inclusion criteria were age ≥18 years and mortality within 4-weeks of admission. Exclusion criteria were death from dermatologic disease or trauma. Variables collected included age, gender, mechanism of injury, length of stay (LOS), total body surface area (TBSA), revised Baux score, and the presence of a NOK. Fisher’s Exact Test and Student’s t-test were used for analysis. Results In total, 67 patients met inclusion criteria. Of these patients, 14 (21%) did not have a NOK involved in medical decisions. Table 1 shows the means and odds ratio between the two groups. Patients without a NOK were younger (p < 0.05), more likely to be homeless (p < 0.01), had higher TBSA (p < 0.01), had shorter LOS (p < 0.01), and were 5 times less likely to receive comfort care (p < 0.05). Gender and ethnicity were not statistically significant. Conclusions Patients without a NOK present to participate in medical decisions are transitioned to comfort care less often despite having a higher burden of injury. This disparity in standard of care between the two groups demonstrates a need for a cultural shift in burn care to prevent suffering of these marginalized patients. Burn providers should be empowered to reduce suffering when no decision maker is present. Applicability of Research to Practice We report that the absence of a NOK has a significant impact leading to a decreased initiation of comfort care in critically ill burn patients. National protocols should be created to allow burn providers to act as a surrogate to prevent prolonged suffering.
- Published
- 2020
29. 5 The Predictive Capacity of ASA PS in Burn Patients
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Christopher H Pham, Katherine J Choi, Haig A Yenikomshian, Zachary J Collier, Melissa Mert, Ruibei Li, Justin Gillenwater, Catherine M. Kuza, and Ryan K Ota
- Subjects
Mechanical ventilation ,medicine.medical_specialty ,Third-Degree Burn ,Respiratory rate ,business.industry ,medicine.medical_treatment ,Rehabilitation ,Vital signs ,Glasgow Coma Scale ,medicine.disease ,Intensive care unit ,Comorbidity ,law.invention ,Blood pressure ,law ,Emergency medicine ,Emergency Medicine ,medicine ,Surgery ,business - Abstract
Introduction The four main prognostic models used to determine risk of burn mortality are the revised Baux (rBaux), Belgian Outcome in Burn Injury (BOBI), Abbreviated Burn Severity Index (ABSI), and quick Sequential Organ Failure Assessment (qSOFA). These models fail to factor in medical comorbidities. The ASA PS (American Society of Anesthesiologists Physical Status) is a simple scale incorporating severity of traumatic injury with comorbidities, which strongly predicts mortality in surgical patients. The purpose of this study is to determine whether the ASA PS is an adequate adjunct to measure burn severity. Methods All adults admitted to an ABA verified burn center from January 2016 to April 2019 with TBSA ≥10% who underwent surgery were reviewed. Demographics (age, gender, TBSA, race, ASA PS), vital signs (GCS, blood pressure, respiratory rate), and outcome variables (length of stay [LOS], mechanical ventilation [MV] days, and complications) were evaluated. rBaux, BOBI, ABSI, and qSOFA scores were calculated. The primary outcome was in-hospital mortality. After descriptive statistical analysis, mortality associations of the models were assessed by determining odds ratios. Firth’s logistic regression and area under the receiver operator curves determined the predictive utility of the prognostic scores. Results Of the 183 patients who fit inclusion criteria, median age was 44 years (30–57), and the majority (70%) were male. Median TBSA was 20%, 65% (n=118) had full thickness burns, 14% (n=25) had inhalation injury, and mortality was 9% (n=17). rBaux score was the best predictor of mortality (AUC=.84), ICU LOS (R2=.04), and MV days (R2=.06). For every 10-point increase in rBaux score, there was a 1.7 times increase in mortality (OR=1.7, CI 1.4–2.3, p< .00). The predicted ICU LOS increases from 2.8 to 31.4 days for the lowest and highest rBaux score quartiles. Compared to rBaux scores of 30–53, patients with scores of 54–70 had 4 times more MV days (CI 1.5–11, p< .00). The ASA PS was slightly inferior to rBaux in predicting mortality (AUC=.72), although not statistically significant (p=0.1). As ASA PS score went from I/II to III, III to IV, and IV to V/VI; mortality increased by 2.8 (OR=2.8, CI 1.5–5.5, p< .00). Conclusions rBaux is the best predictor of mortality, ICU LOS, and MV days although ASA PS also predicts mortality. Future studies should determine the combined predictive ability of ASA PS and rBaux. Applicability of Research to Practice rBaux and ASA PS scores can be used to determine risk of mortality in burn patients.
- Published
- 2020
30. Effect of synbiotics during the perioperative period in patients with Crohn's disease: A pilot study
- Author
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M. Takazoe, K. Saito, M. Mineki, and K. Ota
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medicine.medical_specialty ,Crohn's disease ,Nutrition and Dietetics ,Synbiotics ,business.industry ,Endocrinology, Diabetes and Metabolism ,Internal medicine ,medicine ,In patient ,Perioperative ,medicine.disease ,business - Published
- 2020
31. Comprehensive Study of Variability in Poly-Si Channel Nanowire Transistor ~ Grain Boundary effect in Variability ~
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K. Ota, T. Kawai, and M. Saitoh
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Materials science ,business.industry ,law ,Transistor ,Nanowire ,Optoelectronics ,Grain boundary ,business ,law.invention ,Communication channel - Published
- 2018
32. Multicentre trial of ABO-incompatible kidney transplantation
- Author
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K. Ota, K. Takahashi, T. Agishi, T. Sonda, T. Oka, S. Ueda, H. Amemiya, T. Shiramizu, H. Okazaki, N. Akiyama, A. Hasegawa, T. Kawamura, H. Takagi, and A. Ueno
- Subjects
03 medical and health sciences ,Transplantation ,0302 clinical medicine ,030211 gastroenterology & hepatology ,030230 surgery - Published
- 2018
- Full Text
- View/download PDF
33. Gastrointestinal: Intestinal Behçet's disease-like ulcers associated with myelodysplastic syndrome with monosomy 7
- Author
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Y, Matsumoto, K, Ota, and H, Yamada
- Subjects
Male ,Peptic Ulcer ,Ileum ,Behcet Syndrome ,Myelodysplastic Syndromes ,Humans ,Endoscopy ,Chromosome Deletion ,Cecum ,Chromosomes, Human, Pair 7 ,Aged - Published
- 2018
34. Developing Communicative Learning Materials for Teaching English as a Foreign Language to Students of Elementary Teacher Study Program of Flores University of East Nusa Tenggara
- Author
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Maria K. Ota
- Subjects
media_common.quotation_subject ,Foreign language ,Rubric ,Boredom ,Interview guide ,Teacher education ,Teaching english ,ComputingMilieux_COMPUTERSANDEDUCATION ,medicine ,Mathematics education ,Quality (business) ,Product (category theory) ,medicine.symptom ,Psychology ,media_common - Abstract
This study aimed at developing communicative learning materials for teaching English as a foreign language to students of elementary teacher education study program of Flores University. The instruments used in this study were observation sheet, interview guide, scoring rubric, and questionnaire which were used to gather data during product’s development. This study used the research and development model proposed by Sugiyono (2009). The result shows that the developed communicative learning materials were relevant to the students’ needs. The learning materials which were designed in the form of a textbook were relevant to the students’ expertise and the developed materials which were used along with communicative activities were categorized as having good quality. The implementation of the communicative materials are effectively implemented in the classroom where the result of posttest mean score was 86 and pretest mean score was 75. The lecturers of English in this study program are suggested to use these present communicative learning materials and various activities in order to avoid the boredom of the students during teaching and learning process. The various activities used can help learners to enhance their English abilities in communication and the students’ improvements of English can be increased.
- Published
- 2018
35. EP1.16-38 Pulmonary Infiltrates in Patients Treated with Anti-Programmed Death-1/Programmed Death Ligand 1 Therapy
- Author
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S. Choh, H. Takenaka, A. Okada, K. Ota, K. Horimoto, S. Murakami, and T. Ibaraki
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Pulmonary and Respiratory Medicine ,Pathology ,medicine.medical_specialty ,Oncology ,business.industry ,Medicine ,Pulmonary infiltrates ,In patient ,Programmed death 1 ,business ,Ligand (biochemistry) ,Programmed death - Published
- 2019
36. Clinical Courses of Graft Failure Caused by Chronic Allograft Dysfunction in Kidney Transplantation
- Author
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H. Matsuda, S. Teruta, S. Tsudaka, T. Fujiwara, and K. Ota
- Subjects
Adult ,Graft Rejection ,Male ,medicine.medical_specialty ,Graft failure ,Primary Graft Dysfunction ,Renal function ,030230 surgery ,Kidney ,03 medical and health sciences ,0302 clinical medicine ,Risk Factors ,medicine ,Humans ,Survival rate ,Kidney transplantation ,Retrospective Studies ,Transplantation ,business.industry ,Graft Survival ,Age Factors ,Retrospective cohort study ,Middle Aged ,medicine.disease ,Allografts ,Kidney Transplantation ,Surgery ,Survival Rate ,medicine.anatomical_structure ,Cohort ,Kidney Failure, Chronic ,030211 gastroenterology & hepatology ,Female ,business ,Glomerular Filtration Rate - Abstract
Background Chronic allograft dysfunction (CAD) is a main cause of graft failure in kidney transplantation. Methods We retrospectively analyzed 279 kidney transplant recipients who survived with a functioning graft for at least 2 years. CAD was defined as chronic graft deterioration, excluding other specific causes. We defined the pattern of decline in estimated glomerular filtration rate (eGFR), as follows: (1) “plateau” was defined as decline in eGFR ≤2 mL/min/1.73 m 2 /year; “long plateaus” were those lasting more than 5 years; (2) “rapid decline” was a decrease in eGFR ≥20 mL/min/1.73 m 2 /year. Patients diagnosed with CAD were categorized according to the occurrence of rapid decline and/or long plateau as follows: group 1, neither rapid decline nor long plateau; group 2, rapid decline only; group 3, long plateau only; and group 4, both rapid decline and long plateau. Results From a total of 81 graft losses, 51 (63%) failed because of CAD, with a median of 9.4 years. Sixteen patients belonged to group 1, 14 to group 2, 12 to group 3, and nine to group 4. Mean graft survival times in the four groups were 7.7 ± 1.1, 6.1 ± 3.1, 16.2 ± 2.5, and 10.8 ± 3.6 years, respectively ( P Conclusions The results indicate that this cohort of kidney transplant recipients who had CAD comprised subgroups with different clinical courses.
- Published
- 2017
37. Applying polygenic risk scoring for psychiatric disorders within a family context
- Author
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Simone de Jong, Mateus Jose Abdalla Diniz, Andiara C Saloma Rodrigues, Ary Gadelha, Marcos L Santoro, Vanessa K Ota, Cristiano Noto, MDD BIP groups of Psychiatric Genomics Consortiu, Charles Curtis, Hamel Patel, Lynsey S Hall, Paul F O'Reilly, Sintia I Belangero, Rodrigo Bressan, and Gerome Breen
- Published
- 2017
- Full Text
- View/download PDF
38. MON-115 THE TOTAL MANAGEMENT OF AGED CHRONIC HEMODIALYSIS PATIENTS WITH COGNITIVE IMPAIRMENTS
- Author
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K. Ota, R. Hasegawa, K. Takeda, and K. Shichihyo
- Subjects
Pediatrics ,medicine.medical_specialty ,Nephrology ,business.industry ,Medicine ,Cognition ,Chronic hemodialysis ,business - Published
- 2019
39. On power bases for rings of integers of relative Galois extensions
- Author
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S. Akizuki and K. Ota
- Subjects
Discrete mathematics ,General Mathematics ,Arithmetic ,Mathematics ,Power (physics) - Published
- 2012
40. Investigation on sandy riverbank failure eroded by water level rising
- Author
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T. Sato, Y. Toyoda, K. Ota, and R. Arai
- Subjects
Hydrology ,Geology ,Water level - Published
- 2016
41. Centimeter Level Augmentation Service (CLAS) in Japanese Quasi-Zenith Satellite System, its User Interface, Detailed Design, and Plan
- Author
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S. Fujita, K. Ota, Y. Sato, R. Hirokawa, M. Miya, and J. Takiguchi
- Subjects
Quasi-Zenith Satellite System ,Centimeter ,Engineering ,Service (systems architecture) ,business.industry ,Real-time computing ,Satellite system ,Plan (drawing) ,User interface ,business ,Telecommunications - Abstract
In this work, the development progress and status of Centimeter Level Augmentation Service (CLAS) in Japanese Quasi-Zenith Satellite System (QZSS) are described. Especially, essential points regarding user interface documents for CLAS called IS-QZSS-L6 are mentioned.
- Published
- 2016
42. Prolonged matrix metalloproteinase-3 high expression after cyclic compressive load on human synovial cells in three-dimensional cultured tissue
- Author
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M. Kondo, K. Ota, Hideki Yoshikawa, Yutetsu Akamine, Ken Nakata, Yuri Muroi, and Kenji Kakudo
- Subjects
Adult ,Male ,Matrix Metalloproteinase 3 ,Pathology ,medicine.medical_specialty ,Time Factors ,Interleukin-1beta ,Cell Culture Techniques ,Matrix metalloproteinase ,Young Adult ,Downregulation and upregulation ,Elastic Modulus ,Matrix Metalloproteinase 13 ,medicine ,Humans ,RNA, Messenger ,Messenger RNA ,Tissue Inhibitor of Metalloproteinase-1 ,Tissue Scaffolds ,Interleukin-6 ,business.industry ,Catabolism ,Interleukin-8 ,Synovial Membrane ,Biomechanical Phenomena ,Up-Regulation ,Temporomandibular joint ,Cell biology ,medicine.anatomical_structure ,Matrix Metalloproteinase 9 ,Otorhinolaryngology ,Synovial Cell ,Cell culture ,Female ,Surgery ,Collagen ,Stress, Mechanical ,Matrix Metalloproteinase 1 ,Oral Surgery ,business ,Porosity - Abstract
Excessive mechanical stress is thought to be a factor in the development of joint disorders through the expression of matrix metalloproteinases (MMPs) and related cytokines. Although studies revealed that mechanical stress on the synovium induces MMP expression, it is still not known which MMPs prolonged high level expression. The authors focused on MMP-3, which is one of the major factors in joint disorders such as rheumatism and temporomandibular joint disorders. They examined mRNA and protein levels of MMP-3, other MMPs and related cytokines after loading stress. Human synovial cells were seeded onto a collagen scaffold and different magnitudes of cyclic compressive load were applied for 1h. Time-dependent mRNA and protein levels for catabolic genes were examined after loading. mRNA expressions of MMP-1, MMP-3, MMP-9, IL-6, IL-8 and IL-1β increased after excessive compression. In particular, only mRNA of MMP-3 was up-regulated and maintained at a high level for 24h after excessive loading. The concentrations of MMP-3, IL-6 and IL-8 in culture media after loading increased with excessive compression. These results may account for the pathomechanism of MMP-3 induced by cyclic load on synovial cells in joint disorders.
- Published
- 2012
43. Effects of junction geometry in crossover temperature to macroscopic quantum tunneling regime of intrinsic Josephson junctions
- Author
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K. Ota, Shuho Takekoshi, K. Ishikawa, A. Maeda, and Haruhisa Kitano
- Subjects
Physics ,Josephson effect ,Condensed matter physics ,Crossover ,Energy Engineering and Power Technology ,Geometry ,Edge (geometry) ,Condensed Matter::Mesoscopic Systems and Quantum Hall Effect ,Condensed Matter Physics ,Electronic, Optical and Magnetic Materials ,Pi Josephson junction ,Condensed Matter::Superconductivity ,Etching ,Superconducting tunnel junction ,Electrical and Electronic Engineering ,Penetration depth ,Quantum tunnelling - Abstract
We investigated the phase dynamics of long intrinsic Josephson junctions, which were fabricated on a narrow bridge structure of Bi2Sr2CaCu2Oy (Bi-2212) single crystals by using a focused ion-beam etching. We measured the probability distribution of the switching events from the zero-voltage state for two types of junction geometry. One is a junction where the bridge width (L1) is larger than the Josephson penetration depth, λJ, and the distance between two slits (L2) is comparable to λJ, while the other is a junction where L1 is comparable to λJ and L2 is larger than λJ. We found that a crossover temperature from the thermally activated regime to the macroscopic quantum tunneling regime was quite different between the two types of junction geometry. We discuss the observed behavior in terms of an edge effect in long Josephson junctions dependent on the junction geometry.
- Published
- 2011
44. Gastrointestinal: Intestinal Behçet's disease-like ulcers associated with myelodysplastic syndrome with monosomy 7
- Author
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K Ota, H Yamada, and Y Matsumoto
- Subjects
Chromosome 7 (human) ,medicine.medical_specialty ,Hepatology ,medicine.diagnostic_test ,business.industry ,Gastroenterology ,MEDLINE ,Behcet's disease ,medicine.disease ,Endoscopy ,Internal medicine ,Medicine ,business - Published
- 2018
45. Chaotic behavior and fractals discovered in the time evolution of discharge current at atmospheric pressure
- Author
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H. Sakamoto, Takao Fukuyama, and K. Ota
- Subjects
Physics ,Correlation dimension ,Atmospheric pressure ,Time evolution ,Lyapunov exponent ,Mechanics ,Condensed Matter Physics ,01 natural sciences ,Corona ,010305 fluids & plasmas ,Electric arc ,symbols.namesake ,Physics::Plasma Physics ,Electric field ,0103 physical sciences ,symbols ,010306 general physics ,Corona discharge - Abstract
In this study, nonlinear behaviors in the time evolution of discharge current at atmospheric pressure are investigated from the viewpoints of chaos and fractals. When the electric field between two electrodes placed in atmospheric pressure increases and exceeds a certain value, the insulation breakdown of air and corona discharge occur. With the further increase in the electric field, the corona discharge gradually transforms into an arc discharge along with the increasing discharge current. It is found from the chaotic analysis results of the calculation of the largest Lyapunov exponents that the system sustains more chaos in the corona than the arc discharge, i.e.,the system is stabilized with the system changing from a corona to arc discharge. The correlation dimension of the time evolution of the discharge current saturates at a non-integer value at every discharge current, and 1/f-type spectra are observed in the power spectrum, i.e., the system exhibits fractal properties. Published by AIP Publishing., Physics of Plasmas, 25(9), 92303; 2018
- Published
- 2018
46. Correlation between the Quality of Life after Brain Injury in Japanese version (QOLIBRI-J) and Community Integration Questionnaire (CIQ)
- Author
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Megumi Suzuki, K. Ota, Mariko Naito, and I. Kondo
- Subjects
Disease specific ,Traumatic brain injury ,business.industry ,Rehabilitation ,Community integration ,medicine.disease ,Spearman's rank correlation coefficient ,Correlation ,Cronbach's alpha ,Quality of life ,medicine ,Orthopedics and Sports Medicine ,Low correlation ,business ,Clinical psychology - Abstract
Introduction/Background The Quality of Life after Brain Injury (QOLIBRI; 37 items) is a disease specific subjective questionnaire of health-related quality of life (HRQoL) in persons after traumatic brain injury. We developed Japanese version of QOLIBRI; QOLIBRI-J and reported that it's test-retest reliability (ICC; 0.92, Cronbach α = 0.86) and validity (Correlations of SF-36) were excellent. The Questionnaires of QOLIBRI-J are based on subjective satisfaction, although those of another popular QOL instrument, Community Integration Questionnaire; CIQ is based on objective situations. We investigated between the relationship of QOLIBRI-J and CIQ of the persons with higher brain dysfunctions after TBI to show the differences of subjective and objective QOL. Material and method Subjects: 73 recruited community-dwelling Japanese with higher brain dysfunction after traumatic brain injury [61 male, 12 female: age 41.6 ± 14.3, Glasgow Outcome Scale-Extended; GOSE (3 to 8: median 5)]. Design The Correlations between QOLIBRI-J and CIQ were investigated in 73 subjects at the same time. They were also asked to fill the GOSE. The questionnaires were administered in one of three modes: by self-report (mail), self-report (participant presents at the clinic), and face-to-face interview. Results Distribution of GOS-E score were as follows, 3: lower severe disability (12.3%), 4: upper severe disability (27.4%), 5: lower moderate disability (27.4%), 6: upper moderate disability (16.4%), 7: lower good recovery (11.0%), 8: upper good recovery (5.5%). There was a low correlation between QOLIBRI-J total score and the CIQ total score (ρ=0.326 Spearman correlation coefficient). By the subscale analysis, the strongest correlation was found between QOLIBRI-J (Daily life/autonomy) and CIQ (social life). In contrast there was the weakest correlation between QOLIBRI (emotions) and CIQ (productive life). There was no correlation between the QOLIBRI and GOSE (ρ=0.21). Conclusion QOLIBRI-J had a mild correlation with CIQ. There were some differences between QOLIBI and CIQ. One of the reasons of this difference was thought to be the subjective emotional factor about taking a productive work.
- Published
- 2018
47. Dynamics of Shock Dispersion and Interactions in Supersonic Freestreams with Counterflowing Jets
- Author
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Dale K. Ota, Ten-See Wang, Victor E. Pritchett, Aaron H. Auslender, Endwell O. Daso, and Isaiah Blankson
- Subjects
Shock wave ,Hypersonic speed ,Materials science ,business.industry ,Aerodynamic heating ,Aerospace Engineering ,Aerodynamics ,Mechanics ,symbols.namesake ,Optics ,Mach number ,Wave drag ,symbols ,Supersonic speed ,business ,Choked flow - Abstract
This study describes an active flow control concept that uses counterflowing jets to significantly modify external flowfields and strongly disperse the shock waves of supersonic and hypersonic vehicles to reduce aerothermal loads and wave drag. The potential aerothermal and aerodynamic benefits of the concepts were investigated by conducting experiments on a 2.6%-scale Apollo capsule model in Mach 3.48 and 4.0 freestreams in a trisonic blowdown wind tunnel, as well as pretest computational fluid dynamics analyses of the flowfields, with and without counterflowing jets. The model employed three sonic and two supersonic (with design Mach numbers of 2.44 and 2.94) jet nozzles with exit diameters ranging from 0.25 to 0.5 in. The schlieren images were consistent with the pretest computational fluid dynamics predictions, showing a long penetration mode jet interaction at low jet flow rates of 0.05 and 0.1 Ib m /s, whereas a short penetration mode jet was revealed at higher flow rates. The long penetration mode jet appeared to be almost fully expanded and was unsteady, with the bow shock becoming so dispersed that it was no longer discernible. High-speed camera schlieren data revealed the bow shock to be dispersed into striations of compression waves, which suddenly coalesced to a weaker bow shock with a larger standoff distance as the flow rate reached a critical value. Heat transfer results showed a significant reduction in heat flux, even giving negative heat flux for some short penetration mode interactions, indicating that the flow wetting the model had a cooling effect, instead of heating, which could significantly impact thermal protection system requirements and design. The findings suggest that high-speed vehicle design and performance can benefit from the application ofcounterflowing jets as an active flow control.
- Published
- 2009
48. High-damping and high-rigidity composites of Al2TiO5–MgTi2O5 ceramics and acrylic resin
- Author
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Toshiaki Shimazu, Masashi Miura, Hiroshi Maeda, A. Ichikawa, K. Ota, Emile Hideki Ishida, and N. Isu
- Subjects
chemistry.chemical_classification ,Materials science ,Mechanical Engineering ,Modulus ,Dynamic mechanical analysis ,Polymer ,Rigidity (electromagnetism) ,chemistry ,Mechanics of Materials ,visual_art ,Solid mechanics ,visual_art.visual_art_medium ,General Materials Science ,Grain boundary ,Ceramic ,Composite material ,Acrylic resin - Abstract
High-damping materials are widely used in engineering fields. In order to increase the precision of vibration control to different levels, high-damping materials with high-rigidity are required. This study attempts to develop a new high-damping high-rigidity material using ductile ceramics based on the Al2TiO5–MgTi2O5 system, which has many continuous microcracks along the grain boundaries. Ductile ceramics have high internal friction (Q−1 = 0.01–0.037), but very low rigidity (
- Published
- 2009
49. Plastic deformation of ductile ceramics in the Al2TiO5–MgTi2O5 system
- Author
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H. Maeda, T. Ogawa, E.H. Ishida, M. Miura, K. Ota, N. Isu, and T. Shimazu
- Subjects
Materials science ,Mechanical Engineering ,Metallurgy ,Plasticity ,Condensed Matter Physics ,Microstructure ,Stress (mechanics) ,Grain growth ,Brittleness ,Mechanics of Materials ,Stress relaxation ,General Materials Science ,Grain boundary ,Ductility - Abstract
Ceramics are typically rigid and brittle. If this brittleness could be overcome, their application can be widely expanded. Itacolumite is known as a highly flexible unique rock in the sandstone group. The microstructure of itacolumite has many narrow gaps at the grain boundaries; these gaps allow a slight displacement of the particles, and the rock can plastically bend when stressed. The authors tried to develop highly ductile ceramics by mimicking itacolumite, which resulted in the Al 2 TiO 5 –MgTi 2 O 5 solid solution ceramics. These ceramics have a high ductility and good stress relaxation properties against flexure stress because there are many thin gaps along the grain boundaries formed by discontinuous grain growth during the sintering process and anisotropic thermal expansion during the cooling process. The ductility is caused by the integration of a slight displacement of the grains. This phenomenon was observed as a high-internal friction, reflecting the total friction of a high-grain boundary area.
- Published
- 2008
50. Spinal Arterial Anatomy and Risk Factors for Lower Extremity Weakness Following Endovascular Thoracoabdominal Aortic Aneurysm Repair With Branched Stent-Grafts
- Author
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Catherine K. Chang, Timothy A.M. Chuter, Max Wintermark, Jade S. Hiramoto, Linda M. Reilly, Andre D. Furtado, Maile K. Ota, and Monica Bucci
- Subjects
Male ,medicine.medical_specialty ,medicine.medical_treatment ,Awards and Prizes ,Collateral Circulation ,Prosthesis Design ,Blood Vessel Prosthesis Implantation ,Aortic aneurysm ,Paraparesis ,Risk Factors ,Blood vessel prosthesis ,medicine ,Humans ,Vascular Patency ,Radiology, Nuclear Medicine and imaging ,Aged ,Retrospective Studies ,Aged, 80 and over ,Paraplegia ,Aortic Aneurysm, Thoracic ,Spinal Cord Ischemia ,business.industry ,Stent ,Retrospective cohort study ,Arteries ,medicine.disease ,Collateral circulation ,Spine ,humanities ,Blood Vessel Prosthesis ,Surgery ,Lower Extremity ,Cardiothoracic surgery ,cardiovascular system ,Female ,Stents ,Radiology ,Tomography, X-Ray Computed ,Cardiology and Cardiovascular Medicine ,business - Abstract
To evaluate spinal arterial anatomy and identify risk factors for lower extremity weakness (LEW) following endovascular thoracoabdominal aortic aneurysm (TAAA) repair.A retrospective review was conducted of 37 patients (27 men; mean age 74.8+/-7.1 years, range 58-86) undergoing endovascular TAAA repair with branched stent-grafts at a single academic institution from July 2005 to December 2007. Data were collected on preoperative comorbidities, duration of operation, blood loss, type of anesthesia, extent of aortic coverage, blood pressure, cerebrospinal fluid (CSF) pressure and drainage, and postoperative development of LEW. Pre- and postoperative contrast-enhanced computed tomographic angiograms (CTA) in a 26-patient subset were analyzed to evaluate the number of patent intercostal and lumbar arteries before and after repair.All patients were neurologically intact at the end of the operation. Seven (19%) patients developed LEW postoperatively: 6 perioperatively and 1 after discharge. LEW was associated with postoperative hypotension, internal iliac artery (IIA) occlusion, and fewer patent segmental arteries on preoperative CTA. Lowest mean systolic blood pressure was90 mmHg in all 6 (100%) patients who developed LEW in hospital compared to 12 (44%) of the 27 patients who did not develop LEW (p = 0.02). Complete resolution of LEW (n = 4) followed prompt measures to raise blood pressure and lower CSF pressure. Persistent LEW (n = 3) was associated with sustained hypotension from sepsis, postoperative bleeding, and hemodialysis, respectively. Two (29%) of 7 patients with LEW either lost prograde flow to an IIA during repair or had bilaterally occluded IIAs preoperatively compared to 2 (7%) of 30 patients without LEW (p = 0.16). Comparison of pre- and postoperative CTAs showed no reduction in the mean number of patent segmental arteries in patients with or without LEW.Endovascular TAAA repair inevitably occludes direct inflow to lumbar and intercostal arteries. The distal segments of these arteries to the spine, however, are seen to remain patent through collaterals. Measures to preserve collateral pathways and increase perfusion pressure may help prevent or treat LEW.
- Published
- 2008
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