Global Frontiers in Heart Valve Interventions PDF Download
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Author: Peter Zilla
Publisher: Frontiers Media SA
ISBN: 2889765571
Category : Medical
Languages : en
Pages : 168
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Author: Peter Zilla
Publisher: Frontiers Media SA
ISBN: 2889765571
Category : Medical
Languages : en
Pages : 168
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Book Description
Author: Mpiko Ntsekhe
Publisher: Frontiers Media SA
ISBN: 2832555624
Category : Medical
Languages : en
Pages : 138
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Book Description
Global collaboration is the cornerstone of scientific advancement. Frontiers in Cardiovascular Medicine have organized a series of special edition Research Topics, with the goal of highlighting the latest advancements in Cardiovascular Medicine across the globe, showcasing the academic excellence and high-quality work of internationally recognized researchers. These collections aim to shed light on the recent progress made across the entire breadth of Cardiovascular Research, and reflect on the challenges faced by researchers across borders.’ This Research Topic focuses on critical health challenges in Africa and major efforts to solve them.
Author: A. John Camm
Publisher:
ISBN: 9780198824879
Category : Cardiology
Languages : en
Pages : 3198
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Author: Alfonso Ielasi
Publisher: Frontiers Media SA
ISBN: 2889663124
Category : Medical
Languages : en
Pages : 105
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This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact.
Author: Marco Zimarino
Publisher: John Wiley & Sons
ISBN: 1119720605
Category : Medical
Languages : en
Pages : 42
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Book Description
Aortic Valve Transcatheter Intervention Calcific aortic stenosis (AS) is the most common heart valve anomaly, with a largely age-dependent prevalence, a calculated annual incidence rate in the range of 4-5% in general populations and up to 6% in patients aged 75 years and over. Surgical aortic valve replacement (SAVR) was previously the only option available to patients with symptomatic, severe aortic stenosis. After the first-in-human transcatheter aortic valve implantation (TAVI) was performed by Alain Cribier in 2002, the treatment strategy for patients with symptomatic AS has been revolutionized. Since then, TAVI has grown exponentially, as a result of accruing evidence demonstrating safety and efficacy, and reduced invasiveness compared with SAVR. TAVI devices are continuously expanding to include several valve design options. As this strategy is continuously evolving to treat younger patients and lower-risk populations, aside from the long-term durability of the valve systems, procedural safety will become the focus of newer-generation devices. This book is a practical handbook devoted to the optimization of TAVI procedures, through a focused containment of complications. Through an integrated evaluation of the clinical status, imaging techniques and laboratory findings, the authors provide readers with clear messages on preventive and therapeutic recommendations.
Author: Liqiu Yan
Publisher: Frontiers Media SA
ISBN: 2832548245
Category : Medical
Languages : en
Pages : 791
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Book Description
We are delighted to present the inaugural Frontiers in Cardiovascular Medicine “Rising Stars” article collection. This collection showcases the high-quality work of internationally recognized researchers in the early stages of their independent careers. All Rising Star researchers were individually nominated by the Chief Editors of the Journal in recognition of their potential to influence the future directions in their respective fields. The work presented here highlights the diversity of research performed across the entire breadth of cardiovascular medicine, including the elucidation of fundamental biology, the development of novel diagnostics or therapeutics, computational modelling approaches, and bioengineering strategies for regeneration.
Author: Henrik Hultkvist
Publisher: Linköping University Electronic Press
ISBN: 917685079X
Category :
Languages : en
Pages : 101
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Book Description
BACKGROUND Postoperative heart failure in the setting of aortic valve surgery results in poor long-term survival. We hypothesized that there could be a myocardial factor that is not addressed by risk scores currently available. We speculated that this myocardial factor could be diastolic dysfunction. By evaluating postoperative heart failure, the EuroSCORE, the NT-proBNP level, and diastolic function, we might achieve a deeper understanding of the outcome for individuals with postoperative heart failure. METHODS This research project was built upon four cohort studies. The first two studies (I and II) were retrospective in nature, and studies III and IV were prospective, observational, and longitudinal. All work was based on data from clinical and national databases. In Study I, we compared the outcome of patients with or without postoperative heart failure, evaluated according to the preoperative risk score. In Study II, we explored the effect of underlying heart disease on the preoperative level of NT-proBNP and the relationships between NT-proBNP and severe postoperative heart failure and short-term mortality. In Study III, we described the dynamics of NT-proBNP, from a preoperative evaluation to a six-month follow-up, in patients that underwent one of two different procedures: a surgical aortic valve replacement and a transcatheter implantation. We related both pre- and postprocedural NT-proBNP levels to one-year mortality. In Study IV, we evaluated diastolic function in patients that underwent surgical aortic valve replacement and its influence on outcome. We also evaluated NT-proBNP levels and postoperative heart failure as predictors of long-term mortality. RESULTS Study I This study included 397 patients that underwent isolated surgical aortic valve replacements. Of these, 45 patients (11%) were treated for postoperative heart failure. With an average follow-up of 8.1 years (range 5.2-11.2), among patients at low risk (EuroSCORE≤7), the crude five-year survival rates were 58% in patients with postoperative heart failure and 89% in those without postoperative heart failure (p<0.001). Among patients with postoperative heart failure, those classified as low risk had the same poor long-term prognosis as those classified as high risk (EuroSCORE>7). In the high risk group, survival rates were similar between patients with or without postoperative heart failure (57% vs. 64%; p=0.60). Study II This study included a cohort of 2978 patients with coronary artery disease, aortic stenosis, and mitral regurgitation. Preoperative NTproBNP levels were found to be 1.7-fold higher in patients with aortic stenosis than in patients with coronary artery disease and 1.4-fold higher in patients with mitral regurgitation than in patients with coronary disease. The power of preoperative NT-proBNP for predicting severe postoperative heart conditions was good among patients with coronary heart disease and patients with mitral regurgitation, but not as good among patients with aortic stenosis. NT-proBNP also showed good discriminating power for short-term mortality among patients with coronary artery disease. Moreover, NT-proBNP was found to be an independent predictor for both severe postoperative heart failure and short-term mortality in patients with coronary artery disease. Study III This study included 462 patients that underwent preoperative evaluations for aortic valve disease. Aortic valve interventions elicited a rise in NT-proBNP that was more pronounced in patients undergoing surgical aortic valve replacement compared to patients undergoing transcatheter valve implantation. No deterioration in NT-proBNP was observed during the waiting time before the intervention, despite a median duration of four months. At six months after the intervention, NT-proBNP levels had decreased to or below the preoperative levels in all groups. Among patients that received surgical aortic valve replacements, pre-and early postoperative NT-proBNP levels showed good discriminatory power for oneyear mortality. This discriminatory power was not observed among patients that had undergone a transcatheter procedure; those patients had higher levels of both pre- and postoperative NT-proBNP compared to patients that had undergone surgery. Study IV We evaluated 273 patients that underwent aortic valve surgery. High left ventricular filling pressure was present in 22% (n=54) of patients at the time of surgery. At six months after surgery, diastolic function deteriorated in 24/193 (12%) patients and improved in 27/54 (50%) patients. Diastolic dysfunction was not found to be associated with long-term mortality. However, both postoperative heart failure and preoperative NTproBNP levels were associated with increases in long-term mortality. In a multivariable Cox analysis, NT-proBNP remained predictive of long-term mortality. CONCLUSION Postoperative heart failure contributed to long-term mortality, even in patients considered to be at low risk preoperatively. Our results suggested that pressure overload, followed by a volume overload led to a NTproBNP response that was more pronounced than the ischemia response. Elevated levels of NT-proBNP were associated with both short- and long-term mortality. In these studies, we could not corroborate the notion that high left ventricular filling pressure was associated with long-term mortality.
Author: Marco Zimarino
Publisher: John Wiley & Sons
ISBN: 1119720613
Category : Medical
Languages : en
Pages : 290
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Book Description
Aortic Valve Transcatheter Intervention Calcific aortic stenosis (AS) is the most common heart valve anomaly, with a largely age-dependent prevalence, a calculated annual incidence rate in the range of 4-5% in general populations and up to 6% in patients aged 75 years and over. Surgical aortic valve replacement (SAVR) was previously the only option available to patients with symptomatic, severe aortic stenosis. After the first-in-human transcatheter aortic valve implantation (TAVI) was performed by Alain Cribier in 2002, the treatment strategy for patients with symptomatic AS has been revolutionized. Since then, TAVI has grown exponentially, as a result of accruing evidence demonstrating safety and efficacy, and reduced invasiveness compared with SAVR. TAVI devices are continuously expanding to include several valve design options. As this strategy is continuously evolving to treat younger patients and lower-risk populations, aside from the long-term durability of the valve systems, procedural safety will become the focus of newer-generation devices. This book is a practical handbook devoted to the optimization of TAVI procedures, through a focused containment of complications. Through an integrated evaluation of the clinical status, imaging techniques and laboratory findings, the authors provide readers with clear messages on preventive and therapeutic recommendations.
Author: Elena Aikawa
Publisher: Frontiers Media SA
ISBN: 2832520294
Category : Medical
Languages : en
Pages : 126
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Book Description
Author: Mohamed Boutjdir
Publisher: Frontiers Media SA
ISBN: 2889633977
Category :
Languages : en
Pages : 263
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Book Description
