Perforated aortic valve leaflets
نویسندگان
چکیده
منابع مشابه
Visualization of aortic valve leaflets using black blood MRI.
Although magnetic resonance imaging (MRI) is capable of imaging various physiological parameters associated with the heart valves, it has generally been difficult to visualize the valve leaflets directly. The aortic valve was imaged in 120 patients referred for cardiac MRI to assess myocardial volumes or mass. The average patient age was 37 and ranged from 9 to 75 years. Heart rate ranged from ...
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A 28-year-old man with no relevant medical history was admitted to our hospital for fever occurring early in the evening, weakness, dyspnea, and headache of 2 months’ duration. Blood culture was persistently positive for Streptococcus sanguinis (5/5). Upon admission, a diastolic murmur that had not been detected previously was found. Transthoracic echocardiography was performed and showed a lar...
متن کاملTranscatheter Aortic Valve Replacement: A Review Article
Transcatheter aortic valve replacement (TAVR) is a novel therapeutic intervention for the replacement of severely stenotic aortic valves in high-risk patients for standard surgical procedures. Since the initial PARTNER trial results, use of TAVR has been on the rise each year. New delivery methods and different valves have been developed and modified in order to promote the minimally invasive p...
متن کاملHemodynamic Environments from Opposing Sides of Human Aortic Valve Leaflets Evoke Distinct Endothelial Phenotypes In Vitro
The regulation of valvular endothelial phenotypes by the hemodynamic environments of the human aortic valve is poorly understood. The nodular lesions of calcific aortic stenosis (CAS) develop predominantly beneath the aortic surface of the valve leaflets in the valvular fibrosa layer. However, the mechanisms of this regional localization remain poorly characterized. In this study, we combine nu...
متن کاملDownscale Finite Element Modeling of Aortic Valve Leaflets for in-Situ Estimation of Cell Level Mechanics
As in all tissues, mechanical forces in the aortic valve (AV) modulate the constituent cell population's physiology and biosynthetic activity. While advances have been made toward the understanding of this complex multi-scale relationship, the specific role that and extracellular matrix (ECM) coupling plays on the mechanical response of the AV interstitial cell (AVIC) is poorly understood. The ...
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ژورنال
عنوان ژورنال: Heart
سال: 2006
ISSN: 1355-6037
DOI: 10.1136/hrt.2005.077016