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Aortic Regurgitation II: Clinical Features and Diagnostic Tests01:22

Aortic Regurgitation II: Clinical Features and Diagnostic Tests

51
Aortic valve regurgitation (AR) occurs when the aortic valve fails to close properly, allowing blood to flow backward from the aorta into the left ventricle. This backflow can result in two distinct clinical presentations: acute and chronic AR, each characterized by its own set of symptoms and physical findings.Acute Aortic RegurgitationAcute AR presents with a sudden onset of severe symptoms. Patients typically experience profound dyspnea (shortness of breath), chest pain, and signs of left...
51
Aortic Regurgitation III: Medical Management01:25

Aortic Regurgitation III: Medical Management

39
Aortic regurgitation (AR) is when the aortic valve does not close or seal properly, leading to backward blood circulation from the aorta into the left ventricle during diastole. Common causes of AR include rheumatic heart disease, congenital valve defects, and aortic root dilation. Managing AR requires a multifaceted approach to alleviate symptoms, preserve left ventricular function, and address the underlying cause of the regurgitation. Patients with symptomatic AR or significant left...
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Aortic Regurgitation I: Introduction01:15

Aortic Regurgitation I: Introduction

35
IntroductionAortic regurgitation is characterized by the backward flow of blood from the aorta into the left ventricle during diastole and arises from the improper closure of the aortic valve. This condition results in left ventricular volume overload and can stem from both acute and chronic etiologies, each contributing uniquely to the disease's progression and symptomatology.Acute and Chronic CausesAcute aortic regurgitation often results from events that suddenly impair the integrity of the...
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Mitral Valve Prolapse II: Assessment and Management01:22

Mitral Valve Prolapse II: Assessment and Management

39
IntroductionA range of clinical features characterizes Mitral Valve Prolapse (MVP), but it is important to note that many individuals with MVP are asymptomatic and may remain so throughout their lives. For those who do exhibit symptoms, the following are the key clinical features:Palpitations: This is a common symptom where individuals feel an irregular or rapid heartbeat. Palpitations in MVP are often due to arrhythmias such as premature ventricular contractions or supraventricular...
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Mitral Valve Prolapse I: Introduction01:27

Mitral Valve Prolapse I: Introduction

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IntroductionThe mitral valve, one of the heart's four valves, regulates blood flow. These valves have flaps that open and close to direct blood properly through the heart and body. During each heartbeat, the flaps open for blood to pass through and seal shut to prevent backflow. Specifically, the mitral valve opens to allow blood flow from the heart's upper left chamber to the lower left chamber. It then closes securely as the lower left chamber contracts to pump blood to the body, preventing...
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Updated: Sep 8, 2025

Transcatheter Pulmonary Valve Replacement from Autologous Pericardium with a Self-Expandable Nitinol Stent in an Adult Sheep Model
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Transcatheter Aortic Valve Durability: Focus on Structural Valve Deterioration.

Antonin Trimaille1,2,3, Adrien Carmona1, Sandy Hmadeh2

  • 1Department of Cardiovascular Medicine, Nouvel Hôpital Civil Strasbourg University Hospital Strasbourg France.

Journal of the American Heart Association
|June 18, 2025
PubMed
Summary

Transcatheter heart valve durability is crucial as procedures expand to younger patients. Understanding structural valve deterioration mechanisms is key to improving long-term cardiovascular outcomes.

Keywords:
bioprosthetic valve failuredurabilitystructural valve deteriorationtranscatheter aortic valve replacementtranscatheter heart valve

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Area of Science:

  • Cardiovascular Medicine
  • Biomedical Engineering

Background:

  • Transcatheter aortic valve replacement (TAVR) is a key treatment for severe aortic stenosis.
  • Expanding TAVR to younger, lower-risk patients necessitates focus on long-term transcatheter heart valve (THV) durability.

Purpose of the Study:

  • To review the mechanisms of bioprosthetic valve dysfunction and structural valve deterioration (SVD) in THVs.
  • To highlight factors influencing THV lifespan and the importance of durability for patient outcomes.

Main Methods:

  • Literature review of studies on THV dysfunction and SVD.
  • Analysis of THV characteristics and their impact on durability.
  • Examination of pathological processes leading to SVD.

Main Results:

  • Structural valve deterioration occurs in up to 12.3% of patients 5 years post-TAVR.
  • SVD results from fibrotic remodeling and calcification, influenced by thrombosis and inflammation.
  • Native valve interaction and procedural factors impact THV lifespan.

Conclusions:

  • Improving THV durability is essential for long-term cardiovascular health in TAVR patients.
  • Understanding SVD mechanisms is critical for developing more durable transcatheter heart valves.