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Related Concept Videos

Aortic Regurgitation I: Introduction01:15

Aortic Regurgitation I: Introduction

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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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Aortic Regurgitation II: Clinical Features and Diagnostic Tests01:22

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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...
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Aortic Regurgitation III: Medical Management01:25

Aortic Regurgitation III: Medical Management

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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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Related Experiment Video

Updated: Apr 19, 2026

Full-root Aortic Valve Replacement by Stentless Aortic Xenografts in Patients with Small Aortic Roots
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Significant transaortic gradient after direct flow aortic valve implantation.

Rosa-Ana Hernandez-Antolín1, Luisa Salido1, José Luis Zamorano1

  • 1Cardiology Department, Hospital Ramón Y Cajal, Madrid, Spain.

Catheterization and Cardiovascular Interventions : Official Journal of the Society for Cardiac Angiography & Interventions
|December 30, 2014
PubMed
Summary

A patient with severe aortic valve disease received a Direct Flow valve. Despite initial high gradients post-procedure, the patient improved symptomatically, with improved heart function and no regurgitation, deferring further intervention.

Area of Science:

  • Cardiology
  • Interventional Cardiology
  • Biomaterials Science

Background:

  • Severe aortic valve disease presents significant risks for traditional surgery.
Keywords:
aortic stenosisgeometrical deformationmismatchpercutaneousradial force

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  • Transcatheter aortic valve implantation (TAVI) offers an alternative for high-risk patients.
  • Direct Flow (DF) valve implantation is a less common TAVI approach.