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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...

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...

Mitral Stenosis I: Introduction

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Aortic Regurgitation III: Medical Management

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Aortic Regurgitation II: Clinical Features and Diagnostic Tests

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Heart Valves

Heart Valves

The human heart is a complex organ with an intricate system of valves that regulate blood flow. There are two main types of valves: atrioventricular (AV) valves and semilunar valves.
The AV valves prevent the backflow of blood from the ventricles to the atria during ventricular contraction. These valves function with the assistance of the chordae tendineae and papillary muscles. When the ventricles are relaxed, the chordae tendineae are slack, allowing blood to flow from the atria into the...

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Related Experiment Video

Updated: Jun 10, 2026

Implantation of Left Ventricular Assist Device (LVAD) in Juvenile Landrace Swine: A LVAD Implantation Model of Pediatric Heart Failure

Implantation of Left Ventricular Assist Device (LVAD) in Juvenile Landrace Swine: A LVAD Implantation Model of Pediatric Heart Failure

Published on: January 16, 2026

Aortic valve pathophysiology during left ventricular assist device support.

Ranjit John¹, Katie Mantz, Peter Eckman

¹Division of Cardiothoracic Surgery, Department of Surgery, University of Minnesota, Minneapolis, Minnesota 55455, USA. johnx008@umn.edu

The Journal of Heart and Lung Transplantation : the Official Publication of the International Society for Heart Transplantation

|August 3, 2010

Summary

This summary is machine-generated.

Left ventricular assist devices (LVADs) improve advanced heart failure treatment. This review focuses on aortic valve function and disease in LVAD patients, crucial for effective treatment strategies.

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Implantation of Left Ventricular Assist Device (LVAD) in Juvenile Landrace Swine: A LVAD Implantation Model of Pediatric Heart Failure

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Area of Science:

Cardiology
Medical Devices
Heart Failure Management

Background:

Left ventricular assist devices (LVADs) are increasingly used for advanced heart failure.
Valve abnormalities are common in heart failure patients, both before and after LVAD implantation.
Aortic valve issues are particularly prevalent in LVAD patients.

Purpose of the Study:

To review aortic valve function in patients with LVADs.
To highlight the impact of pre-existing valve disease on LVAD treatment decisions.
To describe the mechanisms of aortic valve changes post-LVAD implantation.

Main Methods:

Comprehensive literature review.
Analysis of existing studies on LVADs and aortic valve pathophysiology.
Synthesis of clinical data regarding valve abnormalities in LVAD recipients.

Main Results:

Aortic valve abnormalities are a significant concern in LVAD patients.
Pre-existing valve disease influences management strategies at LVAD implantation.
Structural changes in the aortic valve occur during and after LVAD support.

Conclusions:

Understanding aortic valve function in LVAD patients is critical.
Consideration of pre-existing valve disease improves patient treatment.
Further research into preventing LVAD-associated valve pathology is needed.