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Related Concept Videos

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...
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...
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...
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...

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Related Experiment Video

Updated: Jun 2, 2026

Full-root Aortic Valve Replacement by Stentless Aortic Xenografts in Patients with Small Aortic Roots
12:17

Full-root Aortic Valve Replacement by Stentless Aortic Xenografts in Patients with Small Aortic Roots

Published on: May 21, 2017

Aortic root geometry in aortic stenosis patients (a SEAS substudy).

Edda Bahlmann1, Christoph A Nienaber, Dana Cramariuc

  • 1Asklepios Clinic St. Georg, Department of Cardiology, Hamburg, Germany. doc_edda@hotmail.com

European Journal of Echocardiography : the Journal of the Working Group on Echocardiography of the European Society of Cardiology
|April 22, 2011
PubMed
Summary

A significant portion of patients with aortic stenosis (AS) lack the aortic root geometry needed for transcatheter aortic valve implantation (TAVI). This impacts suitability for TAVI procedures, particularly in women.

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A Minimally Invasive Model of Aortic Stenosis in Swine
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Published on: October 20, 2023

Area of Science:

  • Cardiology
  • Medical Imaging
  • Biomedical Engineering

Background:

  • Aortic stenosis (AS) is a common valvular heart disease.
  • Transcatheter aortic valve implantation (TAVI) is a minimally invasive treatment option for AS.
  • Accurate aortic root geometry is crucial for successful TAVI device deployment.

Purpose of the Study:

  • To evaluate aortic root dimensions in asymptomatic aortic stenosis patients.
  • To assess the suitability of these dimensions for current TAVI devices.
  • To identify patient characteristics associated with TAVI suitability.

Main Methods:

  • Echocardiography was used to measure aortic root geometry in 1481 asymptomatic AS patients.
  • Measurements included annulus, sinus of Valsalva, sinotubular junction, and supracoronary diameters.
  • Data were analyzed against vendor-specific requirements for CoreValve and Edwards-Sapien TAVI prostheses.

Main Results:

  • 78.2% of patients met criteria for TAVI annular dimensions.
  • 77.7% met criteria for both annular and sinus of Valsalva height.
  • Patients not meeting TAVI requirements were more likely to be women with smaller aortic root diameters.

Conclusions:

  • A substantial percentage of AS patients do not meet current TAVI requirements.
  • Specifically, 27% of women and 19% of men had unsuitable aortic root geometry.
  • This highlights potential limitations for TAVI candidacy based on anatomical factors.