120 results on '"Maciej, Dąbrowski"'
Search Results
2. Single-photon emission computed tomography as a fundamental tool in evaluation of myocardial reparation and regeneration therapies
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Łukasz Tekieli, Wojciech Szot, Ewa Kwiecień, Adam Mazurek, Eliza Borkowska, Łukasz Czyż, Maciej Dąbrowski, Anna Kozynacka, Maciej Skubera, Piotr Podolec, Marcin Majka, Magdalena Kostkiewicz, and Piotr Musiałek
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single-photon emission computed tomography ,cell regeneration therapy ,cell tracking ,transcoronary cell delivery ,myocardial cell uptake. ,Medicine - Abstract
Despite unquestionable progress in interventional and pharmacologic therapies of ischemic heart disease, the number of patients with chronic ischemic heart failure is increasing and the prognosis remains poor. Repair/restoration of functional myocardium through progenitor cell-mediated (PCs) healing and renovation of injured myocardium is one of the pivotal directions in biomedical research. PCs release numerous pro-angiogenic and anti-apoptotic factors. Moreover, they have self-renewal capability and may differentiate into specialized cells that include endothelial cells and cardiomyocytes. Uptake and homing of PCs in the zone(s) of ischaemic injury (i.e., their effective transplantation to the target zone) is an essential pre-requisite for any potential therapeutic effect; thus effective cell tracking is fundamental in pre-clinical and early clinical studies. Another crucial requirement in rigorous research is quantification of the infarct zone, including the amount of non-perfused and hypo-perfused myocardium. Quantitative and reproducible evaluation of global and regional myocardial contractility and left ventricular remodeling is particularly relevant in clinical studies. Using SPECT, our earlier work has addressed several critical questions in cardiac regenerative medicine including optimizing transcoronary cell delivery, determination of the zone(s) of myocardial cell uptake, and late functional improvement in relation to the magnitude of cell uptake. Here, we review the role of single-photon emission computed tomography (SPECT), a technique that offers high-sensitivity, quantitative cell tracking on top of its ability to evaluate myocardial perfusion and function on both cross-sectional and longitudinal bases. SPECT, with its direct relevance to routine clinical practice, is a fundamental tool in evaluation of myocardial reparation and regeneration therapies.
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- 2023
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3. Objective, observer-independent evaluation of myocardial perfusion and function: the role of SPECT
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Wojciech Szot, Ewa Kwiecień, Łukasz Tekieli, Łukasz Czyż, Eliza Borkowska, Władysław Dąbrowski, Leszek Drabik, Maciej Dąbrowski, Magdalena Kostkiewicz, and Piotr Musiałek
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spect ,ischaemic heart failure ,independent evaluation ,myocardial perfusion ,myocardial function. ,Medicine - Abstract
The number of patients with coronary artery disease and ischaemic heart failure – and those with terminal heart failure – is increasing despite improvements in medical and interventional therapies of ischaemic heart disease – and, over the next decades, it is projected to continue to increase further. Observer-independent, reproducible imaging techniques play a fundamental role in objective evaluation of both conventional (such as surgical or percutaneous) myocardial revascularization and novel therapeutic approaches to reduce myocardial ischaemia, improve contractility and prevent adverse myocardial remodelling. To be applicable to clinical practice, the clinical study design and data should best be rooted in everyday clinical practice. Accurate and reproducible assessment of left ventricular ejection fraction, left ventricular volumes, myocardial perfusion and function is one of the most important objectives of cardiac imaging. Current techniques used both in clinical studies and in everyday clinical practice include 2- and 3-dimensional echocardiography, magnetic resonance imaging, single-photon emission computed tomography and positron emission tomography; each of these has its strengths and limitations. We review present evidence on the role of single-photon emission computed tomography as a technique that may offer, through being observer-independent, the most objective evaluation of evolution of left ventricular perfusion, volumes and ejection fraction.
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- 2023
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4. SARS-CoV-2 infection activating a novel variant of the NOTCH3 gene and subsequently causing development of CADASIL
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Zbigniew J. Król, Małgorzata Dorobek, Maciej Dąbrowski, Justyna Zielińska-Turek, Bartosz Mruk, Jerzy Walecki, Katarzyna Sklinda, Robert Gil, Agnieszka Pawlak, Marzena Wojtaszewska, Adrian Lejman, Paula Dobosz, Paweł Zawadzki, Aneta Pawłowska, Michał Szczepaniak, Dorota Król, Artur Zaczyński, and Waldemar Wierzba
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sars-cov-2 ,covid-19 ,encephalitis ,cadasil ,whole genome sequencing ,notch3 gene ,Medicine - Abstract
Introduction In the following study we describe the diagnostic process and further case analysis of a 30-year-old woman admitted with typical COVID-19 symptoms, who subsequently developed additional symptoms suggesting cerebral autosomal dominant arteriopathy with sub-cortical infarcts and leukoencephalopathy (CADASIL). Material and methods Other than the standard diagnostic procedures, whole genome sequencing (WGS) was used, which led to following findings. A new variant of the NOTCH3 gene, which led to CADASIL-like symptoms, was found, and it had been most likely activated by the SARS-CoV-2 infection. This novel variant in NOTCH3 has not been found in existing databases and has never been mentioned in research concerning CADASIL before. Results Furthermore, after subjecting the patient’s close relatives to WGS it was found that no other examined person demonstrated the same genetic mutation. Conclusions It seems therefore that the new variant of NOTCH3 is of de novo origin in the patient’s genome. Additionally, the relatively early onset of CADASIL and the unexpectedly severe COVID-19 infection suggest that the two occurred simultaneously: the infection with SARS-CoV-2 accelerated development of CADASIL symptoms and the unusual variant of the NOTCH3 gene contributed to the more severe course of COVID-19.
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- 2022
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5. The cancer-risk variant frequency among Polish population reported by the first national whole-genome sequencing study
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Magdalena Mroczek, Jakub Liu, Mateusz Sypniewski, Tadeusz Pieńkowski, Bartosz Itrych, Joanna Stojak, Bartosz Pronobis-Szczylik, Maria Stępień, Elżbieta Kaja, Maciej Dąbrowski, Tomasz Suchocki, Marzena Wojtaszewska, Paweł Zawadzki, Anna Mach, Paweł Sztromwasser, Zbigniew J. Król, Joanna Szyda, and Paula Dobosz
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genetics ,cancer risk ,Poland ,population cancer screening ,cancer ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
IntroductionPopulation-based cancer screening has raised many controversies in recent years, not only regarding the costs but also regarding the ethical nature and issues related to variant interpretation. Nowadays, genetic cancer screening standards are different in every country and usually encompass only individuals with a personal or family history of relevant cancer.MethodsHere we performed a broad genetic screening for cancer-related rare germline variants on population data from the Thousand Polish Genomes database based on 1076 Polish unrelated individuals that underwent whole genome sequencing (WGS). ResultsWe identified 19 551 rare variants in 806 genes related to oncological diseases, among them 89% have been located in non-coding regions. The combined BRCA1/BRCA2 pathogenic/likely pathogenic according to ClinVar allele frequency in the unselected population of 1076 Poles was 0.42%, corresponding to nine carriers.DiscussionAltogether, on the population level, we found especially problematic the assessment of the pathogenicity of variants and the relation of ACMG guidelines to the population frequency. Some of the variants may be overinterpreted as disease-causing due to their rarity or lack of annotation in the databases. On the other hand, some relevant variants may have been overseen given that there is little pooled population whole genome data on oncology. Before population WGS screening will become a standard, further studies are needed to assess the frequency of the variants suspected to be pathogenic on the population level and with reporting of likely benign variants.
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- 2023
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6. Interventional cardiology in Poland in 2020 – impact of the COVID-19 pandemic. Annual summary report of the Association of Cardiovascular Interventions of the Polish Cardiac Society and Jagiellonian University Medical College
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Zbigniew Siudak, Dariusz Dudek, Marek Grygier, Aleksander Araszkiewicz, Maciej Dąbrowski, Jacek Kusa, Michał Hawranek, Zenon Huczek, Paweł Kralisz, Tomasz Roleder, Wojciech Wojakowski, Radosław Parma, Krzysztof P. Malinowski, and Stanisław Bartuś
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Medicine - Abstract
As we have previously reported, the ORPKI electronic data capture is monitored continuously and modified according to the needs of the rapidly changing everyday practice of interventional cardiology not only in Poland but also worldwide as required by ESC guidelines [1, 2]. The database is endorsed by the Association of Cardiovascular Interventions of the Polish Cardiac Society (AISN PTK) and is daily operated by the Jagiellonian University Medical College, with currently 154 interventional cardiology centers in Poland reporting. ORPKI database analysis of various trends and patterns is published each year [3–5]. On 31st of December 2020 there were 575 PCI operators certified by the AISN PTK in Poland.
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- 2021
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7. Chronic total occlusion percutaneous coronary intervention in everyday clinical practice – an expert opinion of the Association of Cardiovascular Interventions of the Polish Cardiac Society
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Leszek Bryniarski, Maksymilian P. Opolski, Jarosław Wójcik, Maciej Lesiak, Tomasz Pawłowski, Jakub Drozd, Wojciech Wojakowski, Sławomir Surowiec, Maciej Dąbrowski, Adam Witkowski, Dariusz Dudek, Marek Grygier, and Stanisław Bartuś
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coronary chronic total occlusion ,percutaneous coronary intervention ,hybrid algorithm. ,Medicine - Abstract
Coronary chronic total occlusions (CTO) are increasingly encountered during invasive and non-invasive coronary angiography and remain the most challenging lesions for percutaneous revascularization. During recent years success rates and safety outcomes of CTO percutaneous coronary intervention (PCI) have substantially improved, particularly due to the introduction of new techniques and dedicated equipment as well as specialized training programs of CTO operators. Significantly, the steady advances in CTO PCI techniques have coincided with the new data from randomized clinical trials supporting the role of percutaneous recanalization of CTO in relieving angina and improving the quality of life. The current expert consensus document outlines the rationale, clinical outcomes as well as technical, safety and reimbursement issues of CTO PCI. In addition, the requirements for achieving and maintaining competency in CTO PCI among interventional cardiologists are discussed. Finally, we present the modified hybrid algorithm (the so-called Polish hybrid algorithm) providing some unique refinements to the contemporary CTO PCI strategies. Continuous efforts (including active engagement with the payer) are urgently needed to increase guideline-recommended referrals to CTO PCI, and thus improve the quality of life of CTO patients in Poland.
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- 2021
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8. Transcatheter aortic valve replacement in patients with previous mitral valve replacement. A systematic study
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Zbigniew Chmielak, Maciej Dąbrowski, Paweł Tyczyński, Krzysztof Kukuła, Ilona Michałowska, Emilia Szudejko, Jarosław Skowroński, Mariusz Kuśmierczyk, and Adam Witkowski
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transcatheter aortic valve implantation ,transcatheter aortic valve implantation complications ,mitral valve replacement ,Medicine - Published
- 2020
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9. Interventional cardiology in Poland in 2019. Summary report of the Association of Cardiovascular Interventions of the Polish Cardiac Society (AISN PTK) and Jagiellonian University Medical College
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Dariusz Dudek, Zbigniew Siudak, Marek Grygier, Aleksander Araszkiewicz, Maciej Dąbrowski, Jacek Kusa, Michał Hawranek, Zenon Huczek, Paweł Kralisz, Tomasz Roleder, Wojciech Wojakowski, Radosław Parma, Krzysztof P. Malinowski, and Stanisław Bartuś
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Medicine - Published
- 2020
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10. Anterior mitral leaflet length and mitral annulus diameter impact the echocardiographic outcome after isolated myectomy
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Mateusz Kuć, Magdalena Kumor, Mariusz Kłopotowski, Maciej Dąbrowski, Natalia Kopyłowska-Kuć, Piotr Kołsut, and Mariusz Kuśmierczyk
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Hypertrophic obstructive cardiomyopathy ,HOCM ,myectomy ,mitral valve repair ,Surgery ,RD1-811 ,Anesthesiology ,RD78.3-87.3 - Abstract
Abstract Background Myectomy remains the standard surgical treatment of patients with hypertrophic cardiomyopathy (HOCM). New surgical methods developed in the last decades mainly address the mitral valve and are controversial because of their conflicting assumptions. This study assesses the influence of anterior mitral valve leaflet (AML) length and the anterior-posterior diameter of the mitral annulus (MAD) on dynamic left ventricle outflow tract obstruction and mitral regurgitation (MR) after extended myectomy. Methods We retrospectively analysed the transthoracic echocardiograms (TTE) of 36 patients. AML length and MAD were obtained from TTE performed before the operation. The greatest maximal left ventricle outflow tract (LVOT) gradient and MR registered in follow-up were analysed. After surgery, patients were divided into two groups; those with moderate or milder MR and/or an LVOT gradient
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- 2019
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11. Interventional cardiology procedures in Poland in 2018. Summary report of the Association of Cardiovascular Interventions of the Polish Cardiac Society (AISN PTK) and Jagiellonian University Medical College
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Dariusz Dudek, Zbigniew Siudak, Marek Grygier, Aleksander Araszkiewicz, Maciej Dąbrowski, Jacek Kusa, Michał Hawranek, Zenon Huczek, Paweł Kralisz, Tomasz Roleder, Stanisław Bartuś, and Wojciech Wojakowski
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Medicine - Published
- 2019
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12. Gene Variants Related to Cardiovascular and Pulmonary Diseases May Correlate with Severe Outcome of COVID-19
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Mateusz Sypniewski, Zbigniew J. Król, Joanna Szyda, Elżbieta Kaja, Magdalena Mroczek, Tomasz Suchocki, Adrian Lejman, Maria Stępień, Piotr Topolski, Maciej Dąbrowski, Krzysztof Kotlarz, Angelika Aplas, Michał Wasiak, Marzena Wojtaszewska, Paweł Zawadzki, Agnieszka Pawlak, Robert Gil, Paula Dobosz, and Joanna Stojak
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cardiovascular diseases ,pulmonary diseases ,genetic variants ,risk factors ,COVID-19 ,GWAS ,Biology (General) ,QH301-705.5 ,Chemistry ,QD1-999 - Abstract
Background: Severe outcomes of COVID-19 account for up to 15% of all cases. The study aims to check if any gene variants related to cardiovascular (CVD) and pulmonary diseases (PD) are correlated with a severe outcome of COVID-19 in a Polish cohort of COVID-19 patients. Methods: In this study, a subset of 747 samples from unrelated individuals collected across Poland in 2020 and 2021 was used and whole-genome sequencing was performed. Results: The GWAS analysis of SNPs and short indels located in genes related to CVD identified one variant significant in COVID-19 severe outcome in the HADHA gene, while for the PD gene panel, we found two significant variants in the DRC1 gene. In this study, both potentially protective and risk variants were identified, of which variants in the HADHA gene deserve the most attention. Conclusions: This is the first study reporting the association between the HADHA and DRC1 genetic variants and COVID-19 severe outcome based on the cohort WGS analysis. Although all the identified variants are localised in introns, they may be correlated and therefore inherited along with other risk variants, potentially causative to severe outcome of COVID-19 but not discovered yet.
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- 2022
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13. Efficacy and Safety of Hybrid Cardiac Telerehabilitation in Patients with Hypertrophic Cardiomyopathy without Left Ventricular Outflow Tract Obstruction and Preserved Ejection Fraction—A Study Design
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Krzysztof Sadowski, Ryszard Piotrowicz, Mariusz Kłopotowski, Jadwiga Wolszakiewicz, Agnieszka Lech, Adam Witkowski, Edyta Smolis-Bąk, Ilona Kowalik, Anna Mierzyńska, Dorota Piotrowska, Piotr Dobrowolski, Maciej Dąbrowski, Ewa Sadowy, and Ewa Piotrowicz
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hypertrophic cardiomyopathy ,exercise training ,rehabilitation ,telerehabilitation ,Technology ,Engineering (General). Civil engineering (General) ,TA1-2040 ,Biology (General) ,QH301-705.5 ,Physics ,QC1-999 ,Chemistry ,QD1-999 - Abstract
Hypertrophic cardiomyopathy (HCM) is the most common congenital disease increasing the risk of sudden cardiac death. For many years, HCM patients were excluded from exercise training. However, there are data showing that patients with HCM undergoing supervised exercise training could improve physical performance without serious adverse events. A project was designed as a randomized clinical trial to assess the effectiveness and safety of hybrid cardiac rehabilitation (HCR)—a combination of hospital-based cardiac rehabilitation (1 month) with a new form of home-based telemonitored cardiac rehabilitation (2 months) in HCM patients without left ventricular (LV) outflow tract obstruction and preserved systolic function. Sixty patients who fulfil the inclusion criteria have been randomly assigned (1:1) to either HCR plus usual care (training group) or usual care only (control group). The primary endpoint is a functional capacity evaluated by peak oxygen uptake (pVO2). Secondary endpoints include workload time during the cardiopulmonary exercise testing, a six-minute walk test distance, NT-pro BNP level, echocardiographic parameters of the left ventricular diastolic function (E/A, E/e’, myocardial strain rate), right ventricular systolic pressure, a gradient in the LV outflow tract, and quality of life. The tertiary analysis includes safety, acceptance and adherence to the HCR program. Our research will provide innovative data on the effectiveness and safety of hybrid cardiac rehabilitation in HCM patients without LV outflow tract obstruction and preserved systolic function. Clinical trials registry: ClinicalTrials.gov Identifier NCT03178357.
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- 2022
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14. The Thousand Polish Genomes—A Database of Polish Variant Allele Frequencies
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Elżbieta Kaja, Adrian Lejman, Dawid Sielski, Mateusz Sypniewski, Tomasz Gambin, Mateusz Dawidziuk, Tomasz Suchocki, Paweł Golik, Marzena Wojtaszewska, Magdalena Mroczek, Maria Stępień, Joanna Szyda, Karolina Lisiak-Teodorczyk, Filip Wolbach, Daria Kołodziejska, Katarzyna Ferdyn, Maciej Dąbrowski, Alicja Woźna, Marcin Żytkiewicz, Anna Bodora-Troińska, Waldemar Elikowski, Zbigniew J. Król, Artur Zaczyński, Agnieszka Pawlak, Robert Gil, Waldemar Wierzba, Paula Dobosz, Katarzyna Zawadzka, Paweł Zawadzki, and Paweł Sztromwasser
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variant ,allele frequency ,genome ,whole-genome sequencing ,population genomics ,allelic distribution ,Biology (General) ,QH301-705.5 ,Chemistry ,QD1-999 - Abstract
Although Slavic populations account for over 4.5% of world inhabitants, no centralised, open-source reference database of genetic variation of any Slavic population exists to date. Such data are crucial for clinical genetics, biomedical research, as well as archeological and historical studies. The Polish population, which is homogenous and sedentary in its nature but influenced by many migrations of the past, is unique and could serve as a genetic reference for the Slavic nations. In this study, we analysed whole genomes of 1222 Poles to identify and genotype a wide spectrum of genomic variation, such as small and structural variants, runs of homozygosity, mitochondrial haplogroups, and de novo variants. Common variant analyses showed that the Polish cohort is highly homogenous and shares ancestry with other European populations. In rare variant analyses, we identified 32 autosomal-recessive genes with significantly different frequencies of pathogenic alleles in the Polish population as compared to the non-Finish Europeans, including C2, TGM5, NUP93, C19orf12, and PROP1. The allele frequencies for small and structural variants, calculated for 1076 unrelated individuals, are released publicly as The Thousand Polish Genomes database, and will contribute to the worldwide genomic resources available to researchers and clinicians.
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- 2022
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15. Wpływ Dyrektywy MIFID II na dystrybucję instrumentów finansowych w Polsce
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Czesław Bartłomiej Martysz, Maciej Dąbrowski, and Arkadiusz Kocel
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Jednym z celów Dyrektywy MIFID II było ograniczenie konfliktów interesów oraz missellingu pomiędzy dystrybutorami instrumentów finansowych a klientami detalicznymi. Nowością było ograniczenie zakresu wypłacania „zachęt” przez towarzystwa funduszy inwestycyjnych dystrybutorom instrumentów finansowych. W artykule opisano nowe praktyki powstałe na rynku dystrybucji instrumentów finansowych po wdrożeniu Dyrektywy MIFID II oraz wyniki pogłębionej ankiety przeprowadzonej wśród profesjonalistów rynku finansowego. Autorzy dowodzą, że Dyrektywa MIFID II zwiększyła liczbę regulacji dla dystrybutorów instrumentów finansowych, wzmocniła ochronę klientów detalicznych (szczególnie inwestorów indywidualnych), ale z drugiej strony ograniczyła zakres oferty i (w związku z ograniczeniem „zachęt”) pogorszyła sytuację dystrybutorów niepowiązanych z grupami bankowymi.
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- 2023
16. Quantification of mitral regurgitation in patients with hypertrophic cardiomyopathy using aortic and pulmonary flow data: impacts of left ventricular outflow tract obstruction and different left ventricular segmentation methods
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Mateusz Śpiewak, Mariusz Kłopotowski, Monika Gawor, Agata Kubik, Ewa Kowalik, Barbara Miłosz-Wieczorek, Maciej Dąbrowski, Konrad Werys, Łukasz Mazurkiewicz, Katarzyna Kożuch, Magdalena Polańska-Skrzypczyk, Joanna Petryka-Mazurkiewicz, Anna Klisiewicz, Zofia T. Bilińska, Jacek Grzybowski, Adam Witkowski, and Magdalena Marczak
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Hypertrophic cardiomyopathy ,Mitral regurgitation ,Phase-contrast ,Cardiovascular magnetic resonance ,Left ventricular outflow tract obstruction ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Abstract Background Cardiovascular magnetic resonance (CMR) imaging in patients with hypertrophic cardiomyopathy (HCM) enables the assessment of not only left ventricular (LV) hypertrophy and scarring but also the severity of mitral regurgitation. CMR assessment of mitral regurgitation is primarily based on the difference between LV stroke volume (LVSV) and aortic forward flow (Ao) measured using the phase-contrast (PC) technique. However, LV outflow tract (LVOT) obstruction causing turbulent, non-laminar flow in the ascending aorta may impact the accuracy of aortic flow quantification, leading to false conclusions regarding mitral regurgitation severity. Thus, we decided to quantify mitral regurgitation in patients with HCM using Ao or, alternatively, main pulmonary artery forward flow (MPA) for mitral regurgitation volume (MRvol) calculations. Methods The analysis included 143 prospectively recruited subjects with HCM and 15 controls. MRvol was calculated as the difference between LVSV computed with either the inclusion (LVSVincl) or exclusion (LVSVexcl) of papillary muscles and trabeculations from the blood pool and either Ao (MRvolAoi or MRvolAoe) or MPA (MRvolMPAi or MRvolMPAe). The presence or absence of LVOT obstruction was determined based on Doppler echocardiography findings. Results MRvolAoi was higher than MRvolMPAi in HCM patients with LVOT obstruction [47.0 ml, interquartile range (IQR) = 31.5–60.0 vs. 35.5 ml, IQR = 26.0–51.0; p
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- 2017
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17. The Polish Interventional Cardiology TAVI Survey (PICTS): adoption and practice of transcatheter aortic valve implantation in Poland
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Radosław Parma, Maciej Dąbrowski, Andrzej Ochała, Adam Witkowski, Dariusz Dudek, Zbigniew Siudak, and Jacek Legutko
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heart failure ,transcatheter aortic valve implantation ,transcatheter aortic valve replacement ,aortic valve stenosis ,Heart Team ,aortic valve regurgitation ,Medicine - Abstract
Introduction : Few studies have assessed the development of transcatheter aortic valve implantation (TAVI) in Poland since its introduction in 2008, and data on current TAVI activity or practice are missing. Aim : To assess the dynamics of TAVI adoption in Poland and to detect differences among Polish centres in TAVI practice and decision-making. Material and methods: The Polish Interventional Cardiology TAVI Survey (PICTS) was approved by the Polish Association of Cardiovascular Interventions and presented to all 21 national TAVI centres. Between 2008 and 2015 the cumulative number of TAVI performed in Poland was 2189. The annual number of TAVI rose from 8 in 2008 to 670 in 2015 (0.21 to 17.4 implants per million inhabitants, respectively). Results : The median TAVI experience per centre was 80 procedures (95% CI: 38.1–154.6). In 2015 the TAVI penetration rate reached 5.12% of the estimated eligible Polish population. Inoperable and high-risk patients are treated with TAVI in all centres, with 52% of Heart Teams also qualifying medium-risk patients. The rate of transfemoral implantations increased to 83.2% of all procedures in 2015, while transapical implantations decreased to 12%. The frequency of subclavian, direct aortic or transcarotid routes in 2015 was below 3% each. Conclusions : The PICTS survey observed a positive but slow rate of adoption of TAVI in Poland. When compared to Western European countries, our findings highlight a significant treatment gap in high or prohibitive surgical risk patients with severe aortic stenosis. Remarkable variations in TAVI practices among Polish TAVI centres warrant publication of joint national guidelines and recommendations.
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- 2017
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18. Comparison of long-term outcomes and risk factors of aortic stenosis treatment in patients undergoing transcatheter aortic valve implantation and surgical aortic valve replacement
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Karolina, Marzec, Maria, Jaworska-Wilczyńska, Ilona, Kowalik, Małgorzata, Nieznańska, Adam, Witkowski, Maciej, Dąbrowski, Krzysztof, Kuśmierski, and Tomasz, Hryniewiecki
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Heart Valve Prosthesis Implantation ,Aortic Valve Stenosis ,Constriction, Pathologic ,Stroke ,Transcatheter Aortic Valve Replacement ,Pulmonary Disease, Chronic Obstructive ,Treatment Outcome ,Ischemic Attack, Transient ,Risk Factors ,Aortic Valve ,Humans ,Respiratory Insufficiency ,Cardiology and Cardiovascular Medicine ,Retrospective Studies - Abstract
Aortic stenosis (AS) is the most common valvular heart disease and untreated has a bleak prognosis. The only effective method of treatment is valve replacement, surgical (SAVR), or transcatheter (TAVI).We decided to analyze outcomes and predictors of long-term mortality in patients undergoing TAVI and SAVR.A retrospective analysis of 1229 patients with advanced AS, comprising TAVI (n = 211), SAVR (n = 556), SAVR, and additional procedures (n = 462), operated on from 2014 to 2018, was performed.No significant differences between SAVR and TAVI were found for 24-month mortality in groups of consecutive patients. Postoperative stroke or transient ischemic attack (TIA), chronic obstructive pulmonary disease (COPD), and transfusion of red blood cells (RBCs) were independent predictors of 1-year mortality after SAVR. The above-mentioned factors regarding the increased estimated surgery risk in the EuroSCORE II (4%) were predictors of 2-years mortality after SAVR. Risk factors for 6- and 12-month mortality after TAVI were EuroSCORE II, new onset of atrial fibrillation (NOAF), and the increased RBC distribution width (RDW). Postoperative respiratory failure was an independent risk factor for 6-, 12- and 24-month mortality in both groups of patients.There were no significant differences regarding prognosis after TAVI and SAVR at the 24-month follow-up in the propensity score matching model. Independent predictive factors of late mortality after both procedures were EuroScore II and respiratory failure. Independent predictive factors of late mortality specific for TAVI were NOAF, increased RDW, and for SAVR: TIA, stroke, COPD, and RBC transfusion.
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- 2022
19. Percutaneous interventions in cardiology in Poland in the year 2017. Summary report of the Association of Cardiovascular Interventions of the Polish Cardiac Society AISN PTK and Jagiellonian University Medical College
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Dariusz Dudek, Zbigniew Siudak, Jacek Legutko, Aleksander Araszkiewicz, Jacek Bil, Maciej Dąbrowski, Michał Hawranek, Zenon Huczek, Paweł Kralisz, Tomasz Roleder, Stanisław Bartuś, and Wojciech Wojakowski
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Medicine - Published
- 2018
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20. Recepcja Metamorfoz Owidiusza w operach Jeana-Baptiste’a Lully’ego i librettach Philippe’a Quinaulta
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Maciej Dąbrowski
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- 2023
21. Controlling in‐plane magnetic anisotropy of Co films on MgO substrates using glancing angle deposition
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Andreas Frisk, Barat Achinuq, David G. Newman, Emily Heppell, Maciej Dąbrowski, Robert J. Hicken, Gerrit van der Laan, and Thorsten Hesjedal
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Materials Chemistry ,Surfaces and Interfaces ,Electrical and Electronic Engineering ,Condensed Matter Physics ,Surfaces, Coatings and Films ,Electronic, Optical and Magnetic Materials - Abstract
The ability to control the in-plane magnetic anisotropy of a thin film is important for magnetic device applications. One way of accomplishing this task is by glancing angle deposition (GLAD). In this study, thin Co layers have been deposited using GLAD magnetron sputtering on MgO(001) and MgO(110) substrates. For Co films on MgO(001), the in-plane anisotropy direction can be directly controlled via the deposition angle. In contrast, for Co on MgO(110), the anisotropy due to the deposition angle is competing with the anisotropy induced by the substrate, while the growth parameters determine which contribution dominates. On the other hand, while on MgO(001) the deposition angle as well as the film thickness affect the strength of the Co in-plane anisotropy, no influence of these parameters on the magnetic properties is found for films on MgO(110).
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- 2023
22. Canted standing spin-wave modes of permalloy thin films observed by ferromagnetic resonance
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Maciej Dąbrowski, Robert J Hicken, Andreas Frisk, David G Newman, Christoph Klewe, Alpha T N’Diaye, Padraic Shafer, Gerrit van der Laan, Thorsten Hesjedal, and Graham J Bowden
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ferromagnetic resonance ,standing spin waves ,XFMR ,canted magnetization ,exchange spring magnet ,Science ,Physics ,QC1-999 - Abstract
Non-collinear spin structures in materials that combine perpendicular and in-plane magnetic anisotropies are of great technological interest for microwave and spin wave-assisted magnetization switching. [Co/Pt] multilayers are well-known perpendicular anisotropy materials that have the potential to pin the magnetization of a soft magnetic layer, such as permalloy (Py), that has in-plane anisotropy, thereby forming a magnetic exchange spring. Here we report on multilayered [Co/Pt]/Pt/Py films, where an additional ultrathin Pt spacer has been included to control the coupling between the sub-units with in-plane and perpendicular magnetic anisotropy. Vector network analyser (VNA)-ferromagnetic resonance (FMR) measurements were made to obtain a complete picture of the resonant conditions, while the dynamical response of the sub-units was probed by synchrotron-based element- and phase selective x-ray detected FMR (XFMR). For all samples, only slight pinning of the dynamic magnetization of the Py by the [Co/Pt] was noted, and the FMR results were dominated by the 50 nm thick Py layer. Out-of-plane VNA-FMR maps reveal the presence of additional modes, e.g. a perpendicular standing spin-wave (PSSW) state. However, as the magnetic field is reduced below the saturation field, the PSSW state morphs continuously through a series of canted standing spin-wave (CSSW) states into a horizontal standing spin-wave (HSSW) state. The PSSW, CSSW and HSSW states are well described using a multilayer model of the Py film. The observation of CSSW modes is of particular relevance to microwave assisted magnetic recording, where microwave excitation stimulates precession of a soft layer canted out of plane by a pulsed magnetic field.
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- 2021
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23. Single-photon emission computed tomography as a fundamental tool in evaluation of myocardial reparation and regeneration therapies
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Łukasz Tekieli, Wojciech Szot, Ewa Kwiecień, Adam Mazurek, Eliza Borkowska, Łukasz Czyż, Maciej Dąbrowski, Anna Kozynacka, Maciej Skubera, Piotr Podolec, Marcin Majka, Magdalena Kostkiewicz, and Piotr Musiałek
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Cardiology and Cardiovascular Medicine - Published
- 2022
24. Validation of HER2 Status in Whole Genome Sequencing Data of Breast Cancers with the Ploidy-Corrected Copy Number Approach
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Marzena Wojtaszewska, Rafał Stępień, Alicja Woźna, Maciej Piernik, Pawel Sztromwasser, Maciej Dąbrowski, Michał Gniot, Sławomir Szymański, Maciej Socha, Piotr Kasprzak, Rafał Matkowski, and Paweł Zawadzki
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Pharmacology ,Ploidies ,DNA Copy Number Variations ,Whole Genome Sequencing ,Receptor, ErbB-2 ,Genetics ,Molecular Medicine ,Humans ,Breast Neoplasms ,Female ,General Medicine ,Original Research Article ,Genes, erbB-2 - Abstract
Background and Objective Human epidermal growth factor receptor 2 (HER2) protein overexpression is one of the most significant biomarkers for breast cancer diagnostics, treatment prediction, and prognostics. The high accessibility of HER2 inhibitors in routine clinical practice directly translates into the diagnostic need for precise and robust marker identification. Even though multigene next-generation sequencing methodologies have slowly taken over the field of single-biomarker molecular tests, the copy number alterations such as amplification of the HER2-coding ERBB2 gene are hard to validate on next-generation sequencing platforms as they are characterized by chromosomal structural heterogeneity, polysomy, and genomic context of ploidy. In our study, we tested the approach of using whole genome sequencing instead of next-generation sequencing panels to determine HER2 status in the clinical set-up. Methods We used a large dataset of 876 patients with breast cancer whole genomes with curated clinical data and an additional set of 551 patients’ external genomic data. We used the decision-tree-based algorithm for optimization of the diagnostic tool for HER2 status assessment by whole genome sequencing. Results The most efficient approach to assess HER2 status in whole genome sequencing data was the ploidy-corrected copy number, utilizing ERBB2 copy number and mean tumor ploidy. The classifier achieved sensitivity of 91.18% and specificity of 98.69% on the internal validation dataset and 89.86% and 96.06% on the external data, which is similar to other next-generation sequencing methods, currently tested in the clinic. Conclusions We provide evidence that the HER2 status may be reliably determined by whole genome sequencing and is applicable across different laboratory protocols and pipelines. We suggest using the ploidy-corrected copy number for diagnostic purposes. Supplementary Information The online version contains supplementary material available at 10.1007/s40291-021-00571-1.
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- 2021
25. Interventional cardiology in Poland in 2020 – impact of the COVID-19 pandemic. Annual summary report of the Association of Cardiovascular Interventions of the Polish Cardiac Society and Jagiellonian University Medical College*
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Paweł Kralisz, Radosław Parma, Jacek Kusa, Zenon Huczek, Dariusz Dudek, Stanisław Bartuś, Wojciech Wojakowski, Michał Hawranek, Zbigniew Siudak, Aleksander Araszkiewicz, Krzysztof Piotr Malinowski, Marek Grygier, Tomasz Roleder, and Maciej Dąbrowski
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medicine.medical_specialty ,2019-20 coronavirus outbreak ,Interventional cardiology ,Coronavirus disease 2019 (COVID-19) ,business.industry ,Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) ,Psychological intervention ,MEDLINE ,Editorial ,Family medicine ,Pandemic ,medicine ,Medicine ,University medical ,Cardiology and Cardiovascular Medicine ,business - Abstract
As we have previously reported, the ORPKI electronic data capture is monitored continuously and modified according to the needs of the rapidly changing everyday practice of interventional cardiology not only in Poland but also worldwide as required by ESC guidelines [1, 2]. The database is endorsed by the Association of Cardiovascular Interventions of the Polish Cardiac Society (AISN PTK) and is daily operated by the Jagiellonian University Medical College, with currently 154 interventional cardiology centers in Poland reporting. ORPKI database analysis of various trends and patterns is published each year [3–5]. On 31st of December 2020 there were 575 PCI operators certified by the AISN PTK in Poland.
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- 2021
26. Chronic total occlusion percutaneous coronary intervention in everyday clinical practice – an expert opinion of the Association of Cardiovascular Interventions of the Polish Cardiac Society
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Dariusz Dudek, Jakub Drozd, Maksymilian P. Opolski, Maciej Dąbrowski, Leszek Bryniarski, Sławomir Surowiec, Adam Witkowski, Maciej Lesiak, Wojciech Wojakowski, Tomasz Pawłowski, Marek Grygier, Jarosław Wójcik, and Stanisław Bartuś
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medicine.medical_specialty ,Percutaneous ,medicine.medical_treatment ,Psychological intervention ,hybrid algorithm ,030204 cardiovascular system & hematology ,Revascularization ,law.invention ,Angina ,03 medical and health sciences ,0302 clinical medicine ,Randomized controlled trial ,law ,medicine ,cardiovascular diseases ,030212 general & internal medicine ,Intensive care medicine ,coronary chronic total occlusion ,Reimbursement ,Review Paper ,business.industry ,percutaneous coronary intervention ,Percutaneous coronary intervention ,medicine.disease ,Conventional PCI ,Medicine ,Cardiology and Cardiovascular Medicine ,business - Abstract
Coronary chronic total occlusions (CTO) are increasingly encountered during invasive and non-invasive coronary angiography and remain the most challenging lesions for percutaneous revascularization. During recent years success rates and safety outcomes of CTO percutaneous coronary intervention (PCI) have substantially improved, particularly due to the introduction of new techniques and dedicated equipment as well as specialized training programs of CTO operators. Significantly, the steady advances in CTO PCI techniques have coincided with the new data from randomized clinical trials supporting the role of percutaneous recanalization of CTO in relieving angina and improving the quality of life. The current expert consensus document outlines the rationale, clinical outcomes as well as technical, safety and reimbursement issues of CTO PCI. In addition, the requirements for achieving and maintaining competency in CTO PCI among interventional cardiologists are discussed. Finally, we present the modified hybrid algorithm (the so-called Polish hybrid algorithm) providing some unique refinements to the contemporary CTO PCI strategies. Continuous efforts (including active engagement with the payer) are urgently needed to increase guideline-recommended referrals to CTO PCI, and thus improve the quality of life of CTO patients in Poland.
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- 2021
27. Mechanical circulatory support. An expert opinion of the Association of Intensive Cardiac Care and the Association of Cardiovascular Interventions of the Polish Cardiac Society
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Tomasz Hirnle, Agnieszka Tycińska, Michał Hawranek, Rafał Depukat, Marek Jemielity, Monika Gil, Robert Zymliński, Andrzej Świątkowski, Marek Gierlotka, Bogusław Kapelak, Paweł Kralisz, Paulina Łopatowska, Marcin Ligowski, Jan Biegus, Wiktor Kuliczkowski, Tomasz Czarnik, Barbara Zawiślak, Przemysław Trzeciak, Mariusz Kuśmierczyk, Maciej Dąbrowski, Michał Zembala, Mateusz Puślecki, and Marek Grygier
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medicine.medical_specialty ,Percutaneous ,medicine.medical_treatment ,Shock, Cardiogenic ,Psychological intervention ,ventilation and pharmacotherapy ,Percutaneous Coronary Intervention ,Extracorporeal membrane oxygenation ,Humans ,Medicine ,Intensive care medicine ,Expert Testimony ,Impella ,Mechanical ventilation ,Intra-Aortic Balloon Pumping ,business.industry ,Cardiogenic shock ,mechanical circulatory support-type and extension ,medicine.disease ,hemodynamic and echocardiographic monitoring ,Heart failure ,Conventional PCI ,indications and complications ,multidisciplinary approach ,Heart-Assist Devices ,Poland ,Cardiology and Cardiovascular Medicine ,business - Abstract
Mechanical circulatory support (MCS) methods are used in patients with both acute and chronic heart failure, who have exhausted other options for pharmacological or surgical treatments. The purpose of their use is to support, partially or completely, the failed ventricles and ensure adequate organ perfusion, which allows patients to restore full cardiovascular capacity, prolonging their life and effectively improving its quality. The three most popular devices include an intra-aortic balloon pump (IABP), percutaneous assist devices (including Impella, TandemHeart), and venoarterial extracorporeal membrane oxygenation (VA-ECMO). A multidisciplinary approach with the special participation of the Heart Team is required to determine the proper MCS strategy, the choice of the supporting method, and the time of its use. The studies published so far do not allow us to determine which MCS method is the safest and the most effective. Thus, the site experience and accessibility of the method seem to matter most today. MCS finds particular application in patients with acute coronary syndromes complicated by refractory cardiogenic shock, as well as in patients with acute heart failure of the high potential for reversibility. It can also serve as a backup for percutaneous coronary interventions of high risk (complex and high-risk indicated percutaneous coronary intervention [PCI], complex and high-risk indicated PCI [CHIP]). The use of appropriate supportive drugs, precise hemodynamic and echocardiographic monitoring, as well as optimal non-invasive or mechanical ventilation, are extremely important in the management of a patient with MCS. The most serious complications of MCS include bleeding, thromboembolic events, as well as infections, and hemolysis.
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- 2021
28. Elective versus rescue balloon aortic valvuloplasty for critical aortic stenosis
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Maciej Dąbrowski, Marcin Demkow, Miłosz Marona, Witold Śmigielski, Patrycjusz Stokłosa, Adam Witkowski, Zbigniew Chmielak, Krzysztof Kukuła, Tomasz Hryniewiecki, Janina Stępińska, Jarosław Skowroński, and Paweł Tyczyński
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Balloon Valvuloplasty ,medicine.medical_specialty ,Time Factors ,Transcatheter aortic ,business.industry ,medicine.medical_treatment ,Aortic Valve Stenosis ,Regurgitation (circulation) ,medicine.disease ,Balloon ,Surgery ,Aortic valvuloplasty ,Transcatheter Aortic Valve Replacement ,Stenosis ,Treatment Outcome ,Aortic valve replacement ,Interquartile range ,Aortic Valve ,medicine ,Humans ,In patient ,Cardiology and Cardiovascular Medicine ,business ,Retrospective Studies - Abstract
Background: Balloon aortic valvuloplasty (BAV) may be considered a bridge to further intervention in hemodynamically unstable patients or patients with symptomatic severe aortic stenosis (AS). Aims: This study aimed to retrospectively compare periprocedural and in‑hospital outcomes of AS patients treated with elective BAV (group 1) and rescue BAV (group 2). Methods: We identified 35 patients in whom BAV was performed between 2010 and 2018. Among them, 16 were treated electively (group 1) and 19 urgently (group 2). Results: Overall, BAV resulted in a significant decrease in the mean transaortic gradient by a median (interquartile range [IQR]) value of 5 (1–10) mm Hg (P
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- 2020
29. Intravascular ultrasound online guidance during transcatheter valve replacement for native aortic stenosis or failed bioprosthesis
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Adam Witkowski, Michał Świerczewski, Gary S. Mintz, Łukasz Kalińczuk, Kamil Zieliński, Marcin Demkow, Zbigniew Chmielak, Maciej Dąbrowski, Jaffar M. Khan, and Ilona Michałowska
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Bioprosthesis ,Heart Valve Prosthesis Implantation ,medicine.medical_specialty ,medicine.diagnostic_test ,business.industry ,medicine.medical_treatment ,Aortic Valve Stenosis ,Prosthesis Design ,medicine.disease ,Prosthesis Failure ,Transcatheter Aortic Valve Replacement ,Stenosis ,Treatment Outcome ,Valve replacement ,Aortic Valve ,Heart Valve Prosthesis ,Intravascular ultrasound ,medicine ,Humans ,Radiology ,Cardiology and Cardiovascular Medicine ,business ,Ultrasonography, Interventional - Published
- 2020
30. Additive Value of High-Density Lipoprotein Cholesterol and C-Reactive Protein Level Assessment for Prediction of 2-year Mortality After Transcatheter Aortic Valve Implantation
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Maciej Dąbrowski, Marcin Demkow, Kamil Zieliński, Adam Witkowski, Ilona Michałowska, Gary S. Mintz, Tomasz Hryniewiecki, Michał Świerczewski, Ilona Kowalik, Łukasz Kalińczuk, Jerzy Pręgowski, and Zbigniew Chmielak
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Male ,medicine.medical_specialty ,Multivariate analysis ,030204 cardiovascular system & hematology ,Risk Assessment ,Sensitivity and Specificity ,Transcatheter Aortic Valve Replacement ,03 medical and health sciences ,chemistry.chemical_compound ,Sex Factors ,0302 clinical medicine ,High-density lipoprotein ,Internal medicine ,medicine ,Humans ,030212 general & internal medicine ,Mortality ,Renal Insufficiency, Chronic ,Aged ,Aged, 80 and over ,Ejection fraction ,Cholesterol ,business.industry ,Cholesterol, HDL ,Hazard ratio ,Stroke Volume ,Aortic Valve Stenosis ,Stroke volume ,medicine.disease ,C-Reactive Protein ,chemistry ,Sarcopenia ,Concomitant ,Cardiology ,Female ,Hydroxymethylglutaryl-CoA Reductase Inhibitors ,Cardiology and Cardiovascular Medicine ,business ,Biomarkers ,Follow-Up Studies - Abstract
Available prediction models are inaccurate in elderly who underwent transcatheter aortic valve implantation (TAVI). The aim of present study was to analyze the separate and combined prognostic values of baseline HDL-C and C-reactive protein (CRP) levels in patients treated successfully with TAVI who had complete 2-year follow-up. We analyzed 334 patients treated with TAVI from 01/2010 to 07/2017 who had measurements of HDL-C and CRP on admission or during qualification for the procedure. Baseline HDL-C ≤46 mg/dl (areas under the curve [AUC] = 0.657) and CRP ≥0.20 mg/dl (AUC = 0.634) were predictive of 2-year mortality. After stratification with both cutoffs, patients with low HDL-C and concomitant high CRP most often had LVEF ≤50% and were high risk as per EuroSCORE II. Those with isolated CRP elevation had the lowest frequency of LVEF ≤50%, but more sarcopenia (based on psoas muscle area). After adjustment in the multivariate analysis for other identified predictors including EuroSCORE II and statin therapy, isolated HDL-C ≤46 mg/dl (identified in 40 patients) and isolated CRP ≥0.20 mg/dl (n = 109) were both independent predictors of 2-year mortality (hazard ratio [HR] = 2.92 and HR = 2.42, respectively) compared with patients with both markers within established cutoffs (n = 105) who had the lowest 2-year mortality (9.5%). Patients with both markers exceeding cutoffs (n = 80) had the highest risk (HR = 4.53) with 2-year mortality of 42.5%. High CRP was associated with increased mortality within the first year of follow-up, whereas low HDL-C increased mortality in the second year. The combination of both markers with EuroSCORE II enhanced mortality prediction (AUC = 0.697). In conclusion, low baseline HDL-C and high CRP jointly contribute to the prediction of increased all-cause mortality after TAVI.
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- 2020
31. Contingent preference disaggregation model for multiple criteria sorting problem
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Mohammad Ghaderi, Miłosz Kadziński, and Maciej Dąbrowski
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050210 logistics & transportation ,Mathematical optimization ,021103 operations research ,Information Systems and Management ,Preference learning ,General Computer Science ,Computer science ,05 social sciences ,0211 other engineering and technologies ,Decision tree ,Context (language use) ,02 engineering and technology ,Variation (game tree) ,Management Science and Operations Research ,Industrial and Manufacturing Engineering ,Preference ,Set (abstract data type) ,Modeling and Simulation ,0502 economics and business ,Multiple criteria - Abstract
The conventional preference disaggregation approaches for multiple criteria sorting aim at reconstructing an entire set of assignment examples provided by a Decision Maker (DM) with a single preference model instance. In case the DM’s holistic preference information is not consistent with an assumed model, one needs to accept that some assignment examples are not reproduced. We propose a new approach for handling inconsistency in the context of a threshold-based value-driven sorting procedure. Specifically, we introduce preference disaggregation methods for reconstructing all assignment examples with a set of complementary preference models. The proposed approach builds on the assumption that the importance of particular criteria or, more generally, the shape of marginal value functions and their maximal shares in the comprehensive value are contingent (i.e., dependent) on the performance profile of a given alternative. Therefore, in case of inconsistency, the set of assignment examples is divided into subsets, each of which is reconstructed by a unique model to be used only if certain circumstances are valid. We present three methods for learning a set of contingent models, allowing different degrees of variation in the contingent models along two dimensions: the shape of marginal value functions and interrelations between the models. To apply such a set for classification of non-reference alternatives, we learn a decision tree which makes the application of a given model dependent on the alternatives’ profiles represented by the performances on particular criteria, hence allowing to select an appropriate model among the competing models to evaluate a non-reference alternative. The method’s applicability is demonstrated on a problem of evaluating research units representing different fields of science.
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- 2020
32. Transcatheter aortic valve replacement in patients with previous mitral valve replacement. A systematic study
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Emilia Szudejko, Jarosław Skowroński, Krzysztof Kukuła, Paweł Tyczyński, Mariusz Kuśmierczyk, Adam Witkowski, Ilona Michałowska, Zbigniew Chmielak, and Maciej Dąbrowski
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medicine.medical_specialty ,Internal bleeding ,medicine.medical_treatment ,030204 cardiovascular system & hematology ,03 medical and health sciences ,0302 clinical medicine ,Valve replacement ,Internal medicine ,Mitral valve ,medicine ,transcatheter aortic valve implantation complications ,030212 general & internal medicine ,transcatheter aortic valve implantation ,Original Paper ,business.industry ,Mitral valve replacement ,medicine.disease ,mitral valve replacement ,Stenosis ,medicine.anatomical_structure ,Pericardiocentesis ,Mitral incompetence ,Cardiology ,Medicine ,Tamponade ,medicine.symptom ,Cardiology and Cardiovascular Medicine ,business - Abstract
Introduction Severe aortic stenosis (AS) is an ever-growing healthcare problem in ageing populations. Transcatheter aortic valve implantation (TAVI) has revolutionized the treatment of AS. However, TAVI in patients who have undergone mitral valve replacement (MVR) is associated with increased risk of mitral valve damage. Limited data exist on TAVI in patients with AS who underwent MVR in the past. Aim To retrospectively assess the clinical characteristics, detailed echocardiographic and computed tomography measurements, procedural and in-hospital outcome as well as any valve intervention or major adverse cardiovascular events according to VARC-2 criteria at follow-up of patients with a history of MVR, who underwent TAVI. Material and methods Seventeen patients with a history of mitral valve operation, in whom TAVI was performed between 2010 and 2018, were identified. Of these, 15 underwent previous MVR. Results Overall, TAVI resulted in a decrease of mean transaortic gradient by 38.3 ±14 mm Hg (p < 0.001) and a decrease of maximal transaortic gradient by 58.6 ±27.6 mm Hg (p < 0.001). A successful immediate result was obtained in 14 (93.3%) patients. One tamponade occurred during TAVI, which was successfully treated with pericardiocentesis. Post-procedurally, no significant changes in transmitral gradients or mitral regurgitations were observed. Two patients died after hospital discharge, one due to possible internal bleeding and the other due to infection. Conclusions TAVI in patients after MVR is feasible. Meticulous preinterventional echocardiographic and computed tomography planning is essential. Although recommended in previous reports, TEE guidance may not necessarily be obligatory during the procedure.
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- 2020
33. Transcatheter aortic valve-in-valve implantation for failed surgical bioprostheses: results from Polish Transcatheter Aortic Valve-in-Valve Implantation (ViV-TAVI) Registry
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Maciej Dąbrowski, Zenon Huczek, Marek Grygier, Artur Telichowski, Kajetan Grodecki, Damian Hudziak, Monika Gruz-Kwapisz, Marcin Protasiewicz, Jerzy Sacha, Piotr Scisło, Bartosz Rymuza, Krzysztof Wilczek, Wojciech Fil, Piotr Olszówka, Janusz Kochman, Dariusz Jagielak, Michał Zembala, Wojciech Wojakowski, Andrzej Walczak, Radosław Wilimski, Marek Frank, Jarosław Trębacz, Adam Witkowski, Radosław Gocoł, and Szymon Jędrzejczyk
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Bioprosthesis ,Aortic valve ,medicine.medical_specialty ,Transcatheter aortic ,business.industry ,Hazard ratio ,Hemodynamics ,Regurgitation (circulation) ,Prosthesis Design ,medicine.disease ,Confidence interval ,Valve in valve ,Transcatheter Aortic Valve Replacement ,Stenosis ,Treatment Outcome ,medicine.anatomical_structure ,Aortic Valve ,Internal medicine ,Internal Medicine ,medicine ,Cardiology ,Humans ,Poland ,Registries ,business - Abstract
INTRODUCTION Transcatheter aortic valve-in-valve implantation (ViV-TAVI) emerged recently as an alternative to re-do surgery for patients with failed surgical aortic valve (SAV). OBJECTIVES To evaluate the safety and efficacy of transcatheter aortic valves (TAV) in failed SAV in Poland. PATIENTS AND METHODS Data was acquired using a nationwide, multicenter (n=14) Polish Transcatheter Aortic Valve-in-Valve Implantation (ViV-TAVI) Registry (ClinicalTrials.gov Identifier, NCT03361046) with online form collection and 1-year follow-up. RESULTS ViV-TAVI procedures (n=130) constituted 1.9% of all TAVI in Poland with increasing numbers since 2018 (n=59, 45% of all). Hancock II® (21%), Freestyle® (13%), and homograft (11.5%) were identified as the most frequently treated SAV's with self-expanding, supra-annular Corevalve/Evolut® TAV used in the majority of cases (76%). Average post-procedural pressure gradient (average PG) >20 mmHg was found in 21% and 1-year all-cause mortality was 10.8%. SAV stenosis compared to regurgitation/mixed disease was associated with higher average (16, IQR 13.5 - 22.5 vs 14.5, IQR 10-19 mmHg, p=0.004) whereas implantation of supra-annular TAV resulted in lower average PG (14, IQR 10.5-20 vs. intra-annular 19, IQR 16-26 mmHg, P=0.004). After introduction of 2nd generation TAV, shorter procedure time (120, IQR 80-165 min. vs. 135, IQR 108-200 min., P=0.04), less frequent need for additional TAV (2% vs. 10%, P=0.04) and better 1-year freedrom from cardiovascular deaths (95% vs. 82.8%, hazard ratio 0.25, 95% confidence intervals 0.17-0.88, P=0.03) was observed vs. 1st generation. CONCLUSIONS Transcatheter treatment of failed SAV is becoming more frequent, showing the best hemodynamic effect with the use of supra-annular TAV and improved procedural as well as clinical results with the introduction of 2nd generation TAV.
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- 2021
34. Comparison of myocardial tissue reperfusion of inferior wall and a right ventricle among patients after primary angioplasty for an inferior myocardial infarction with right ventricular infarction
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Michał, Świerczewski, Edyta, Kaczmarska, Rajmund, Bobrowski, Kamil, Zieliński, Jerzy, Pręgowski, Bożena, Norwa-Otto, Michał, Ciszewski, Maciej, Dąbrowski, Zbigniew, Chmielak, Marcin, Demkow, Adam, Witkowski, Łukasz, Kalińczuk, and Witold, Rużyłło
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Male ,Percutaneous Coronary Intervention ,Heart Ventricles ,Ventricular Dysfunction, Right ,Angioplasty ,Humans ,Female ,Myocardial Reperfusion ,Inferior Wall Myocardial Infarction ,Middle Aged ,Cardiology and Cardiovascular Medicine ,Aged - Abstract
Impaired myocardial tissue reperfusion affects prognosis of patients with ST-segment elevation myocardial infarction (STEMI) treated with percutaneous coronary intervention (PCI) and can be identified by ST-segment analysis. To date, evaluation of the myocardial tissue reperfusion of the right ventricle (RV) among the patients treated with PCI for inferior STEMI with right ventricular infarction (RVI) has not been made yet.Patients with inferior STEMI were screened for RVI. Tissue reperfusion was evaluated by maximal residual ST-segment deviation post PCI, independently for the RV and for inferior wall. Myocardial injury was assessed by the peak creatine kinase-mb (CK-MB) value.Among 456 patients with inferior STEMI, concomitant RVI occurred in 153 (33.5%) subjects (59.86±10.35 years old, 71.9% females). Tissue reperfusion of LV was present in 75 (49%), whereas 55 (35.9%) had both successful LV and RV reperfusion. Among 97 (63.4%) with successful tissue reperfusion of RV, 55 (56.7%) had associated successful tissue reperfusion of inferior wall. Adequate LV reperfusion was accompanied by RV in over 73.3% of patients (P=0.006). Mean peak CK-MB was lower in the group with adequate versus impaired RV tissue-perfusion (197±143 vs. 305±199 U/L, P=0.021 respectively).Impaired reperfusion of RV is observed in more than one third of inferior STEMIs with RVI and is not strictly associated with impaired reperfusion of inferior wall and clinical or angiographic variables, therefore ST-segment analysis for RV is mandatory.
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- 2021
35. Computed tomography assessment of the aortic root morphology in predicting the development of paravalvular leak following transcatheter aortic valve implantation
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Ilona Michałowska, Patrycjusz Stokłosa, Małgorzata Nieznańska, Karolina Marzec, Ilona Kowalik, Małgorzata Misztal-Ogonowska, Tomasz Hryniewiecki, Adam Witkowski, Karina Zatorska, Maciej Dąbrowski, and Zbigniew Chmielak
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Aortic valve ,medicine.medical_specialty ,business.industry ,Aortic Valve Stenosis ,medicine.disease ,Muscle hypertrophy ,Transcatheter Aortic Valve Replacement ,Perimeter ,Stenosis ,Postoperative Complications ,Treatment Outcome ,Bicuspid aortic valve ,medicine.anatomical_structure ,Heart Valve Prosthesis ,Internal medicine ,Multidetector Computed Tomography ,cardiovascular system ,Internal Medicine ,Cardiology ,Humans ,Medicine ,Ventricular outflow tract ,Interventricular septum ,Cardiac skeleton ,business - Abstract
Introduction: Transcatheter aortic valve implantation (TAVI) is an effective treatment of significant aortic stenosis. Paravalvular leaks (PVLs) are one of the most common complications after the procedure. Objectives: The aim of this study was to assess whether the aortic root morphology affects the occurrence of PVL after TAVI. Patients and methods: We enrolled 50 patients with bicuspid and 50 patients with tricuspid aortic valve who underwent multislice computed tomography (MSCT) and transthoracic echocardiography prior to TAVI. The dimensions of the aortic root were assessed by MSCT. PVL after TAVI was assessed by transthoracic echocardiography. Patients were divided in 2 groups according to the PVL severity: less than moderate PVL (n = 80) and moderate or worse PVL (n = 20), and comparisons between the groups were performed. Results: Patients with at least moderate PVL, compared with those with less than moderate PVL, had greater mean (SD) area (5.2 [1.1] cm2 vs 4.7 [0.8] cm2; P = 0.02), perimeter (8.4 [0.9] cm vs 7.9 [0.7] cm; P = 0.01), and long axis (29.5 [2.7] mm vs 28 [2.7] mm; P = 0.04) of the aortic annulus and greater mean (SD) area (5.3 [1.3] cm2 vs 4.7 [1.1] cm2; P = 0.04) and perimeter (8.6 [1.1] cm vs 8.1 [0.9] cm; P = 0.02) of the left ventricular outflow tract. In multivariable analysis, bicuspid aortic valve disease, interventricular septum hypertrophy, greater left ventricular outflow tract, and postdilatation were significant predictors of moderate PVL following TAVI. Conclusions: The assessment of the aortic root morphology with MSCT can be helpful in predicting PVL after TAVI.
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- 2021
36. The diagnosis and management of spontaneous coronary artery dissection - expert opinion of the Association of Cardiovascular Interventions (ACVI) of Polish Cardiac Society
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Marek Grygier, Jacek Kądziela, Jacek Kusa, David Adlam, Maciej Dąbrowski, Mariusz Tomaniak, Zenon Huczek, Wojciech Wojakowski, Andrzej Januszewicz, Adam Witkowski, Janusz Kochman, Paweł Kralisz, Aleksander Araszkiewicz, Ilona Michałowska, Tomasz Roleder, Michał Hawranek, and Stanisław Bartuś
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medicine.medical_specialty ,business.industry ,Coronary Vessel Anomalies ,Dissection ,Psychological intervention ,MEDLINE ,Expert opinion ,Medicine ,Humans ,Poland ,Cardiology and Cardiovascular Medicine ,business ,Intensive care medicine ,Association (psychology) ,Artery dissection ,Expert Testimony - Published
- 2021
37. Hypertrophic obstructive cardiomyopathy and cor triatriatum sinistrum. A casuistic coexistence
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Paweł Tyczyński, Ilona Michałowska, Kacper Milczanowski, Adam Witkowski, Maciej Dąbrowski, and Mariusz Kłopotowski
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medicine.medical_specialty ,business.industry ,Internal medicine ,Cor Triatriatum ,medicine ,Cardiology ,Humans ,Heart Atria ,Cardiomyopathy, Hypertrophic ,Cardiology and Cardiovascular Medicine ,business ,Cor Triatriatum Sinistrum ,Obstructive cardiomyopathy - Published
- 2021
38. Transcatheter aortic valve implantation in patients with bicuspid aortic valve stenosis utilizing the next-generation fully retrievable and repositionable valve system: mid-term results from a prospective multicentre registry
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Zenon Huczek, Janusz Kochman, Karol Zbroński, Łukasz Kołtowski, Maciej Dąbrowski, Grzegorz Opolski, Maciej Lesiak, Bartosz Rymuza, Radosław Wilimski, Piotr Scisło, Marek Grygier, Andrzej Ochała, Adam Witkowski, and Radosław Parma
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Male ,medicine.medical_specialty ,Lotus™ valve ,Transcatheter aortic ,Bicuspid aortic valve ,Perforation (oil well) ,Aortic Valve Insufficiency ,Mid term results ,Tricuspid stenosis ,Regurgitation (circulation) ,030204 cardiovascular system & hematology ,Prosthesis Design ,Transcatheter Aortic Valve Replacement ,03 medical and health sciences ,0302 clinical medicine ,Postoperative Complications ,Bicuspid Aortic Valve Disease ,Internal medicine ,medicine ,Humans ,030212 general & internal medicine ,Prospective Studies ,Registries ,Aged ,Aged, 80 and over ,Original Paper ,Transcatheter aortic valve implantation ,business.industry ,EuroSCORE ,General Medicine ,Aortic Valve Stenosis ,medicine.disease ,Stenosis ,Treatment Outcome ,Cardiology ,Female ,Cardiology and Cardiovascular Medicine ,business - Abstract
Background The aim of this study was to evaluate the outcomes of transcatheter aortic valve implantation (TAVI) in bicuspid aortic valve (BiAV) stenosis using a mechanically expanded Lotus™ device. The prior experience with first-generation devices showed disappointing results mainly due to increased prevalence of aortic regurgitation (AR) that exceeded those observed in tricuspid stenosis. Methods and results We collected baseline, in-hospital, 30-day and 2-year follow-up data from a prospective, multicentre registry of patients with BiAV undergoing TAVI using Lotus™ valve. Safety and efficacy endpoints were assessed according to VARC-2 criteria. The study group comprised 24 patients. The mean age was 73.5 years and the mean EuroSCORE 2 was 4.35 ± 2.56%. MDCT analysis revealed Type 1 BiAV in 75% of patients. The mean gradient decreased from 60.1 ± 18.3 to 15 ± 6.4 mm Hg, the AVA increased from 0.6 ± 0.19 to 1.7 ± 0.21 cm2. One in-hospital death was observed secondary to aortic perforation. There was no severe AR and the rate of moderate AR equalled 9% at 30 days (n = 2). Device success was achieved in 83% and the 30-day safety endpoint was 17%. In the 2-year follow-up, the overall mortality was 12.5% and the 2-year composite clinical efficacy endpoint was met in 25% of the patients (n = 6) Conclusions The TAVI in selected BiAV patients using the Lotus™ is feasible and characterized by encouraging valve performance and mid-term clinical outcomes. Graphic abstract
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- 2019
39. Long-term follow-up and safety assessment of angiogenic gene therapy trial VIF-CAD: Transcatheter intramyocardial administration of a bicistronic plasmid expressing VEGF-A165/bFGF cDNA for the treatment of refractory coronary artery disease
- Author
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Jacek Kądziela, Maciej Dąbrowski, Adam Witkowski, Krzysztof Kukuła, Arkadiusz Urbanowicz, Mariusz Kłopotowski, Jerzy Pręgowski, Zbigniew Chmielak, and Witold Rużyłło
- Subjects
Male ,Vascular Endothelial Growth Factor A ,Cardiac Catheterization ,medicine.medical_specialty ,DNA, Complementary ,Gene Products, vif ,Genetic enhancement ,Coronary Artery Disease ,030204 cardiovascular system & hematology ,Placebo ,Gastroenterology ,Injections ,law.invention ,Coronary artery disease ,03 medical and health sciences ,0302 clinical medicine ,Double-Blind Method ,Randomized controlled trial ,law ,Internal medicine ,medicine ,Humans ,030212 general & internal medicine ,Myocardial infarction ,Stroke ,Aged ,business.industry ,Myocardium ,Genetic Therapy ,Odds ratio ,Middle Aged ,medicine.disease ,Treatment Outcome ,Female ,Fibroblast Growth Factor 2 ,Cardiology and Cardiovascular Medicine ,business ,Perfusion ,Follow-Up Studies ,Forecasting ,Plasmids - Abstract
There have been a number of angiogenic gene therapy trials, yielding mixed results as to efficacy, but demonstrating uniform short-term treatment safety. Data regarding long-term safety of angiogenic gene therapy are limited. Double-blind VIF-CAD trial (NCT00620217) assessed myocardial perfusion and clinical data in 52 refractory coronary artery disease (CAD) patients randomized into treatment (VIF; n = 33) and Placebo (n = 19) arms. VIF group received electromechanical system NOGA-guided intramyocardial injections of VEGF-A165/bFGF plasmid (VIF) into ischemic regions, while the Placebo group-placebo plasmid injections. Full 1-year follow-up data have been published. This study presents the results of over 10-year (median 133 months, range 95-149) safety follow-up of VIF-CAD patients. Overall, 12 (36.4%) patients died in VIF and 8 (42.1%) in Placebo group (P = .68). Cardiovascular mortality was 12/33 (36.4%) in the VIF group and 6/19 (31.6%) in Placebo group (P = .73). Two Placebo patients died due to malignancies, but no VIF patients (P = .17). The Kaplan-Meier curves of combined endpoint: cardiovascular mortality, myocardial infarction and stroke were similar for both patient groups (P = .71). Odds ratio of Placebo group increasing (reaching a worse) their CCS class versus VIF was non-significant (OR 1.28, 95% CI = 0.66-2.45; P = .47). However, CCS class improved in time irrespectively of treatment-OR of reaching a less favorable CCS class per each year of follow-up was 0.74 (95% CI 0.685-0.792; P .0001, pooled data). There were no differences in readmission rates. Intramyocardial VEGF-A165/bFGF plasmid administration appears safe, with no evidence of an increase in the incidence of death, malignancy, myocardial infarction or stroke during 10-year follow-up in this limited patient population.
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- 2019
40. Reduction of left ventricular mass, left atrial size, and N-terminal pro–B-type natriuretic peptide level following alcohol septal ablation in patients with hypertrophic obstructive cardiomyopathy
- Author
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Mariusz Kłopotowski, Michał Orczykowski, Mateusz Śpiewak, Paweł Tyczyński, Adam Witkowski, Paweł Bekta, Łukasz Mazurkiewicz, Krzysztof Kukuła, Radosław Parma, and Maciej Dąbrowski
- Subjects
Ablation Techniques ,Adult ,Male ,medicine.medical_specialty ,Alcohol septal ablation ,medicine.drug_class ,Heart Ventricles ,030204 cardiovascular system & hematology ,Obstructive cardiomyopathy ,03 medical and health sciences ,Basal (phylogenetics) ,0302 clinical medicine ,Left atrial ,Internal medicine ,Natriuretic Peptide, Brain ,medicine ,Natriuretic peptide ,Humans ,Ventricular outflow tract ,In patient ,Heart Atria ,Prospective Studies ,Interventricular septum ,Cardiac Surgical Procedures ,Aged ,Ethanol ,business.industry ,Organ Size ,Cardiomyopathy, Hypertrophic ,Middle Aged ,Peptide Fragments ,Treatment Outcome ,medicine.anatomical_structure ,Echocardiography ,Cardiology ,Female ,Hypertrophy, Left Ventricular ,Cardiology and Cardiovascular Medicine ,business - Abstract
Background: Alcohol septal ablation (ASA) is an alternative to surgical treatment in patients with hypertrophic obstructive cardiomyopathy (HOCM). Through alcohol-induced necrosis, ASA leads to an increase in left ventricular outflow tract (LVOT) diameter and a decrease in LVOT pressure gradient. Aim: We sought to assess the effect of ASA on left ventricular (LV) wall thickness and mass, left atrial (LA) size, and N-terminal pro–B-type natriuretic peptide (NT-proBNP) level. Methods: The study cohort consisted of 50 patients with HOCM (30 in the ASA group, 20 in the optimal pharmacotherapy group [OPG]). Transthoracic echocardiography (TTE), cardiac magnetic resonance (CMR), and NT-proBNP level analysis were performed at baseline and at six months. Results: All parameters are presented as means. In the ASA group, the maximal LVOT pressure gradient decreased from 122.7 to 54.8 mmHg directly after ASA and to 37.2 mmHg after a further six months (p < 0.0001). The NT-proBNP level decreased from 2174.4 to 1103.4 pg/mL (p < 0.001). On TTE, the interventricular septum (IVS) thickness decreased to from 23.6 to 19.4 mm (p < 0.0001) and the lateral wall (LW) thickness decreased from 15.9 to 14.2 mm (p < 0.007). On CMR, basal IVS thickness decreased from 23.7 to 18.0 mm (p < 0.0001) and the LW thickness decreased from 13.2 to 12.2 mm (p = 0.02). IVS mass reduced from 108.9 to 91.5 g (–16%; p < 0.001). All of the above parameters remained unchanged in the OPG. Conclusions: Successful ASA reduces LV hypertrophy and improves parameters of the LV overload, resulting in LV wall hypertrophy regression, and LA size and NT-proBNP level reduction. The above parameters may be as useful in assessing the efficacy of ASA as the LVOT gradient itself.
- Published
- 2019
41. Analysis of 75 consecutive COVID-19 ECMO cases in Warsaw Centre for Extracorporeal Therapies
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Agnieszka Gajewska, Waldemar Wierzba, Maciej Bartczak, Andrzej Rydzewski, Zbigniew Król, Wojciech Sarnowski, Radosław Smoczyński, Marzena Franczyk, Jakub Staromłyński, Mateusz Konstantynowicz, Maciej Puchniewicz, Mariusz Kowalewski, Robert Gałązkowski, Tomasz Apel, Piotr Suwalski, Artur Zaczyński, Maciej Dąbrowski, Konstanty Szułdrzyński, Wojciech Nowak, Dominik Drobiński, and Anna Witkowska
- Subjects
2019-20 coronavirus outbreak ,medicine.medical_specialty ,Respiratory Distress Syndrome ,Coronavirus disease 2019 (COVID-19) ,business.industry ,SARS-CoV-2 ,Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) ,MEDLINE ,COVID-19 ,Extracorporeal ,Extracorporeal Membrane Oxygenation ,Emergency medicine ,Medicine ,Humans ,Cardiology and Cardiovascular Medicine ,business - Published
- 2021
42. Canted standing spin-wave modes of permalloy thin films observed by ferromagnetic resonance
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Thorsten Hesjedal, Gerrit van der Laan, Alpha T. N'Diaye, G. J. Bowden, Maciej Dąbrowski, Christoph Klewe, Padraic Shafer, Andreas Frisk, David G. Newman, and R. J. Hicken
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Exchange spring magnet ,Physics ,Permalloy ,standing spin waves ,Condensed matter physics ,canted magnetization ,Fluids & Plasmas ,XFMR ,General Physics and Astronomy ,Resonance ,01 natural sciences ,Ferromagnetic resonance ,010305 fluids & plasmas ,Magnetic field ,Magnetization ,Condensed Matter::Materials Science ,ferromagnetic resonance ,Spin wave ,0103 physical sciences ,Physical Sciences ,exchange spring magnet ,010306 general physics ,Saturation (magnetic) - Abstract
Author(s): Dąbrowski, M; Hicken, RJ; Frisk, A; Newman, DG; Klewe, C; N'Diaye, AT; Shafer, P; Van Der Laan, G; Hesjedal, T; Bowden, GJ | Abstract: Non-collinear spin structures in materials that combine perpendicular and in-plane magnetic anisotropies are of great technological interest for microwave and spin wave-assisted magnetization switching. [Co/Pt] multilayers are well-known perpendicular anisotropy materials that have the potential to pin the magnetization of a soft magnetic layer, such as permalloy (Py), that has in-plane anisotropy, thereby forming a magnetic exchange spring. Here we report on multilayered [Co/Pt]/Pt/Py films, where an additional ultrathin Pt spacer has been included to control the coupling between the sub-units with in-plane and perpendicular magnetic anisotropy. Vector network analyser (VNA)-ferromagnetic resonance (FMR) measurements were made to obtain a complete picture of the resonant conditions, while the dynamical response of the sub-units was probed by synchrotron-based element- and phase selective x-ray detected FMR (XFMR). For all samples, only slight pinning of the dynamic magnetization of the Py by the [Co/Pt] was noted, and the FMR results were dominated by the 50 nm thick Py layer. Out-of-plane VNA-FMR maps reveal the presence of additional modes, e.g. a perpendicular standing spin-wave (PSSW) state. However, as the magnetic field is reduced below the saturation field, the PSSW state morphs continuously through a series of canted standing spin-wave (CSSW) states into a horizontal standing spin-wave (HSSW) state. The PSSW, CSSW and HSSW states are well described using a multilayer model of the Py film. The observation of CSSW modes is of particular relevance to microwave assisted magnetic recording, where microwave excitation stimulates precession of a soft layer canted out of plane by a pulsed magnetic field.
- Published
- 2021
43. Comparison of transcatheter aortic valve implantation outcomes in patients younger than 85 years and those aged 85 years or older: a single-center study
- Author
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Maciej, Dąbrowski, Anna, Pyłko, Zbigniew, Chmielak, Jacek, Kwieciński, Krzysztof, Kukuła, Karol, Wysocki, Łukasz, Mazurek, Ignacy, Tołwiński, Paweł, Tyczyński, Jarosław, Skowroński, Ilona, Michałowska, and Adam, Witkowski
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Aged, 80 and over ,Transcatheter Aortic Valve Replacement ,Treatment Outcome ,Aortic Valve ,Humans ,Aortic Valve Stenosis ,Aged ,Retrospective Studies - Abstract
The number of elderly patients requiring treatment of aortic stenosis is expected to grow steadily due to increasing lifespan. Transcatheter aortic valve implantation (TAVI) is an alternative treat‑ ment for patients with aortic stenosis considered nonoptimal candidates for surgical valve replacement.We aimed to assess age‑related differences in 30‑day and 1‑year cardiovascular mortality, Valve Academic Research Consortium‑2 (VARC‑2)-defined complications in patients undergoing TAVI, by comparing outcomes in patients younger than 85 years and those aged 85 years or older.The study group included patients who underwent TAVI at the Institute of Cardiology, Warsaw from January 2009 to July 2019. Clinical, procedural, and follow‑up data were retrospectively collected and compared in 2 groups defined according to age: group 1, younger than 85 years (417) and group 2, aged 85 or older (200).The surgical risk profile assessed by the EuroSCORE II was significantly higher in the group of older patients (median [interquartile range], 6.5% [3.5%-17.3%] vs 7.2% [3.4%-18.1%]; P = 0.002); 30‑day and 1‑year cardiovascular mortality was 4.3% in group 1 as compared with 5% in group 2 (P = 0.69) and 10.8% in group 1 as compared with 9.4% in group 2 (P = 0.51), respectively. The rate of VARC‑2‑defined complications was similar in both groups, with the exception of major vascular com‑ plications (3.12% vs 8.5%; P = 0.004) and major bleeding (10.8% vs 18.5%; P = 0.008), which were more prevalent in older patients.Cardiovascular mortality at 1 month and 1 year following TAVI is similar in patients aged 85 years or older and in those younger than 85 years.
- Published
- 2021
44. Comparison of transcatheter aortic valve implantation outcomes in patients aged <85 years and ≥85 years: a single centre study
- Author
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Zbigniew Chmielak, Paweł Tyczyński, Krzysztof Kukuła, Jacek Kwiecinski, Karol Wysocki, Ignacy Tołwiński, Maciej Dąbrowski, Adam Witkowski, Łukasz Mazurek, Anna Pyłko, Ilona Michałowska, and Jarosław Skowroński
- Subjects
medicine.medical_specialty ,Transcatheter aortic ,business.industry ,medicine.medical_treatment ,Single Center ,medicine.disease ,Surgical risk ,Surgery ,Stenosis ,Euroscore ii ,Valve replacement ,Interquartile range ,Internal Medicine ,medicine ,In patient ,business - Abstract
INTRODUCTION The number of elderly patients requiring treatment of aortic stenosis is expected to grow steadily due to increasing lifespan. Transcatheter aortic valve implantation (TAVI) is an alternative treat‑ ment for patients with aortic stenosis considered nonoptimal candidates for surgical valve replacement. OBJECTIVES We aimed to assess age‑related differences in 30‑day and 1‑year cardiovascular mortality, Valve Academic Research Consortium‑2 (VARC‑2)-defined complications in patients undergoing TAVI, by comparing outcomes in patients younger than 85 years and those aged 85 years or older. PATIENTS AND METHODS The study group included patients who underwent TAVI at the Institute of Cardiology, Warsaw from January 2009 to July 2019. Clinical, procedural, and follow‑up data were retrospectively collected and compared in 2 groups defined according to age: group 1, younger than 85 years (417) and group 2, aged 85 or older (200). RESULTS The surgical risk profile assessed by the EuroSCORE II was significantly higher in the group of older patients (median [interquartile range], 6.5% [3.5%-17.3%] vs 7.2% [3.4%-18.1%]; P = 0.002); 30‑day and 1‑year cardiovascular mortality was 4.3% in group 1 as compared with 5% in group 2 (P = 0.69) and 10.8% in group 1 as compared with 9.4% in group 2 (P = 0.51), respectively. The rate of VARC‑2‑defined complications was similar in both groups, with the exception of major vascular com‑ plications (3.12% vs 8.5%; P = 0.004) and major bleeding (10.8% vs 18.5%; P = 0.008), which were more prevalent in older patients. CONCLUSION Cardiovascular mortality at 1 month and 1 year following TAVI is similar in patients aged 85 years or older and in those younger than 85 years.
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- 2021
45. Nonuniform expansion of the LOTUS Edge intra-annular transcatheter aortic valve seen on intravascular ultrasound as a mechanism of prosthesis-patient mismatch
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Gary S. Mintz, Zbigniew Chmielak, Patrycjusz Stokłosa, Adam Witkowski, Kamil Zieliński, Łukasz Kalińczuk, and Maciej Dąbrowski
- Subjects
medicine.medical_specialty ,Transcatheter aortic ,medicine.diagnostic_test ,business.industry ,medicine.medical_treatment ,Treatment outcome ,Aortic Valve Stenosis ,Edge (geometry) ,Prosthesis Design ,Prosthesis ,Transcatheter Aortic Valve Replacement ,Treatment Outcome ,Aortic Valve ,Heart Valve Prosthesis ,Aortic valve surgery ,Intravascular ultrasound ,medicine ,Prosthesis design ,Humans ,Radiology ,Ultrasonography ,Cardiology and Cardiovascular Medicine ,business ,Ultrasonography, Interventional - Published
- 2021
46. The Polish Interventional Cardiology TAVI Survey (PICTS) : 10 years of transcatheter aortic valve implantation in Poland : the landscape after the first stage of the Valve for Life Initiative
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Radosław Parma, Maciej Dąbrowski, Piotr Kübler, Marek Grygier, Adam Witkowski, Jarosław Trębacz, Marcin Dębiński, Wojciech Wojakowski, Janusz Kochman, Zenon Huczek, and Dariusz Jagielak
- Subjects
medicine.medical_specialty ,Interventional cardiology ,Transcatheter aortic ,business.industry ,General surgery ,Cardiology ,aortic stenosis ,heart failure ,Aortic Valve Stenosis ,medicine.disease ,Transcatheter Aortic Valve Replacement ,Stenosis ,Treatment Outcome ,Valve for Life ,Internal Medicine ,medicine ,Humans ,Heart Team ,In patient ,Poland ,Stage (cooking) ,Penetration rate ,business ,transcatheter aortic valve implantation - Abstract
Introduction Few studies assessed the development of transcatheter aortic valve implantation (TAVI) in Poland since its introduction in 2008. Effects of the Valve-for-Life initiative in the country have not been reported. Objective To investigate TAVI adoption and practice in Poland in the years 2008-2019. Patients and methods The Polish Interventional Cardiology TAVI Survey (PICTS) analysed reports of TAVI activity of all 23 TAVI centres. It consisted of 94 questions, focused on the topics: 1. characteristics of centres. 2. the annual number of TAVI in the years 2008-2019. 3. pre-, intra-, and post-procedural management, 4. a list of TAVI Team members. It was obligatory to answer all questions. The registry survey was published on-line RESULTS: Since 2008, 102 certified operators have performed a total of 6910 procedures. In 2019 the annual number of TAVI reached 1550 (40.38 implants per million inhabitants). Among patients aged ≥ 65 years, TAVI penetration rate was 18.65% in 2019. Inoperable and high-risk patients were treated in all centres, while 18 also treated medium and 5 low-risk patients. The rate of transfemoral implantations increased to 93.5% of all procedures. Conclusions The survey highlighted a slow, positive rate of adoption of TAVI in Poland. We found a significant treatment gap in patients with severe aortic stenosis. Remarkable regional variations in TAVI experience exist among Polish TAVI centres. Further multinational cooperation is warranted to tackle identified limitations in access to these life-saving procedures.
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- 2021
47. Ultrafast microscopy of a twisted plasmonic spin skyrmion
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Yanan Dai, Zhikang Zhou, Atreyie Ghosh, Karan Kapoor, Maciej Dąbrowski, Atsushi Kubo, Chen-Bin Huang, and Hrvoje Petek
- Subjects
Physics::Optics ,General Physics and Astronomy - Abstract
We report a transient plasmonic spin skyrmion topological quasiparticle within surface plasmon polariton vortices, which is described by analytical modeling and imaging of its formation by ultrafast interferometric time-resolved photoemission electron microscopy. Our model finds a twisted skyrmion spin texture on the vacuum side of a metal/vacuum interface and its integral opposite counterpart in the metal side. The skyrmion pair forming a hedgehog texture is associated with co-gyrating anti-parallel electric and magnetic fields, which form intense pseudoscalar E·B focus that breaks the local time-reversal symmetry and can drive magnetoelectric responses of interest to the axion physics. Through nonlinear two-photon photoemission, we record attosecond precision images of the plasmonic vectorial vortex field evolution with nanometer spatial and femtosecond temporal (nanofemto) resolution, from which we derive the twisted plasmonic spin skyrmion topological textures, their boundary, and topological charges; the modeling and experimental measurements establish a quantized integer photonic topological charge that is stable over the optical generation pulse envelope.
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- 2022
48. Hypertrophic cardiomyopathy and anomalous origin of the left coronary artery: a rare coexistence
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Ilona Michałowska, Adam Witkowski, Magdalena Marczak, Jarosław Kuriata, Maciej Dąbrowski, and Paweł Tyczyński
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medicine.medical_specialty ,business.industry ,Coronary Vessel Anomalies ,Hypertrophic cardiomyopathy ,Cardiomyopathy, Hypertrophic ,medicine.disease ,Left coronary artery ,medicine.artery ,Internal medicine ,medicine ,Cardiology ,Humans ,Cardiology and Cardiovascular Medicine ,business - Published
- 2020
49. A successful transcatheter aortic valve implantation of a balloon-expandable valve for paravalvular leak in a patient with bicuspid aortic valve and horizontal aorta
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Zbigniew Chmielak, Krzysztof Kukuła, Adam Witkowski, Anna Pyłko, and Maciej Dąbrowski
- Subjects
medicine.medical_specialty ,Aorta ,Transcatheter aortic ,business.industry ,Aortic Valve Insufficiency ,Aortic Valve Stenosis ,medicine.disease ,Prosthesis Design ,Transcatheter Aortic Valve Replacement ,Balloon expandable stent ,Bicuspid aortic valve ,Treatment Outcome ,Bicuspid Aortic Valve Disease ,Internal medicine ,medicine.artery ,Aortic Valve ,Heart Valve Prosthesis ,Cardiology ,Medicine ,Humans ,Paravalvular leak ,Cardiology and Cardiovascular Medicine ,business - Published
- 2020
50. Long-term survival improvement with acute kidney recovery after successful transcatheter aortic valve replacement
- Author
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Tomasz Hryniewiecki, Gary S. Mintz, Maciej Dąbrowski, Adam Witkowski, Ilona Michałowska, Mariusz Kłopotowski, Zbigniew Chmielak, Łukasz Kalińczuk, Ilona Kowalik, Marcin Demkow, and Kamil Zieliński
- Subjects
medicine.medical_specialty ,Kidney ,Transcatheter aortic ,business.industry ,medicine.medical_treatment ,Urology ,Renal function ,urologic and male genital diseases ,medicine.disease ,medicine.anatomical_structure ,Valve replacement ,Interquartile range ,Internal Medicine ,medicine ,Stage (cooking) ,business ,Stroke ,Kidney disease - Abstract
INTRODUCTION Chronic kidney disease (CKD) is frequent in patients treated with transcatheter aortic valve replacement. Yet, the procedure can improve kidney function, that is, it can lead to acute kidney recovery (AKR). OBJECTIVES The aim of the study was to assess kidney function changes after transcatheter aortic valve replacement and their impact on long‑term outcomes. PATIENT AND METHODS In 432 patients (median age, 83 years; female sex, 63.4% ), estimated glomerular filtration rate (eGFR) was measured before and after the procedure. Chronic kidney disease was defined as a prior diagnosis or baseline eGFR of less than 60 ml/min/1.73 m2. Median (interquartile range [IQR]) follow‑up was 44.7 (31.2-48) months. RESULTS Overall, 66.7% of patients had CKD. An increase in eGFR of 10% or greater at 48 hours (median [IQR], 39.8% [26.2%-51.8%]) was observed in 55.2% of patients with CKD and lasted until discharge (31.8% [17.8%-49%]) in 35.8% (the AKR group). In 17.4% of patients (64.3% with CKD), there was a drop in eGFR of 10% or greater at 48 hours, which remained at discharge in 6.5% of patients (the AKI group; median [IQR] eGFR drop, -22.8% [-40.6% to -14.9%] and -22.8% [-37.5% to -16.2%], respectively). There was a stepwise increase in AKR prevalence from CKD stage 1 and 2 (11.5%) to 4 (52%) (P = 0.03). In‑hospital mortality (P = 0.01) was highest with AKI (10.7%); intermediate with CKD but no AKR (6.6%); and lowest with neither CKD nor AKI (1.5%) or with AKR (1%). Estimated 4‑year mortality was correspondingly different (46.9%, 47.2%, 25.5%, 35.4%, respectively; P
- Published
- 2020
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