The aortic valve: structure, complications and implications for transcatheter aortic valve replacement

Mm Rozeik1, Dj Wheatley2, T Gourlay2

  • 1Department of Biomedical Engineering, University of Strathclyde, Glasgow, UK monica.rozeik@strath.ac.uk.

Perfusion
|February 27, 2014
PubMed

Insights

Transcatheter aortic valve replacement (TAVR) offers a vital treatment for aortic stenosis. Improving TAVR technology can overcome complications and enhance prosthesis durability for better patient outcomes.

Area of Science:

  • Cardiovascular Science
  • Biomedical Engineering
  • Medical Device Technology

Background:

  • The aortic valve functions under significant hemodynamic stress, with over 100,000 daily cycles.
  • Aortic stenosis, a severe complication, has a poor prognosis without intervention, with surgical valve replacement as the current standard.
  • Understanding native aortic valve anatomy and function is crucial for developing effective prosthetic replacements.

Approach:

  • This review examines the anatomy, structure, and pathology of the aortic valve.
  • It discusses the implications of these factors for transcatheter aortic valve replacement (TAVR) device design.
  • The review highlights current TAVR complications and potential solutions.

Key Points:

  • Aortic valve disease necessitates advanced prosthetic solutions.
  • Transcatheter aortic valve replacement (TAVR) is a key therapeutic approach.
  • Reducing delivery profile and enhancing imaging are critical for TAVR success.

Conclusions:

  • Further advancements in TAVR technology are needed to address complications like bleeding, conduction disturbances, and patient-prosthesis mismatch.
  • Optimizing TAVR aims for a fully functional and durable aortic valve prosthesis.
  • Improved imaging and device design are essential for overcoming current TAVR limitations.

Related Concept Videos

Aortic Regurgitation I: Introduction01:15

Aortic Regurgitation I: Introduction

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...
1.6K
Aortic Regurgitation II: Clinical Features and Diagnostic Tests01:22

Aortic Regurgitation II: Clinical Features and Diagnostic Tests

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...
1.2K
Aortic Regurgitation III: Medical Management01:25

Aortic Regurgitation III: Medical Management

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...
598
Mitral Valve Prolapse I: Introduction01:27

Mitral Valve Prolapse I: Introduction

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...
1.1K
Aneurysm II: Clinical Manifestations and Diagnostic Studies01:21

Aneurysm II: Clinical Manifestations and Diagnostic Studies

Thoracic, aortic arch and abdominal aneurysms are significant vascular conditions that can present with various clinical manifestations and lead to serious complications. Understanding these manifestations and the appropriate diagnostic studies is essential for effective management and treatment.Thoracic Aortic AneurysmsThoracic aortic aneurysms often remain asymptomatic until they reach a size that impinges on adjacent structures. They typically cause deep, diffuse chest pain that radiates to...
589
Aneurysm III: Interprofessional Care01:26

Aneurysm III: Interprofessional Care

Aneurysm management involves either conservative medical therapy or surgical intervention, depending on the size and symptoms of the aneurysm. Conservative management is generally reserved for smaller, asymptomatic aneurysms, while larger or symptomatic aneurysms often necessitate surgical repair.Conservative Medical TherapyFor small, asymptomatic aneurysms, particularly abdominal aortic aneurysms (AAA) less than 5.5 centimeters in diameter, conservative medical therapy is recommended. This...
478