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Aortic Regurgitation I: Introduction

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...

Aortic Regurgitation III: Medical Management

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...

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Related Experiment Video

Updated: May 8, 2026

Benefits of Cardiac Resynchronization Therapy in an Asynchronous Heart Failure Model Induced by Left Bundle Branch Ablation and Rapid Pacing

Benefits of Cardiac Resynchronization Therapy in an Asynchronous Heart Failure Model Induced by Left Bundle Branch Ablation and Rapid Pacing

Published on: December 11, 2017

First Description of Novel End-Organ Effects by Speed Modulation Using the Aortix™ Device.

Ajay Bhandari¹, Alden Dunham¹, Emmanuel Bassily¹

¹University of South Florida, Tampa, FL, USA.

Case Reports in Cardiology

|May 2, 2024

Summary

This summary is machine-generated.

A novel device for cardiorenal syndrome may cause hypoperfusion due to blood acceleration. Adjusting device speed could optimize results and improve patient outcomes.

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Related Experiment Videos

Last Updated: May 8, 2026

Benefits of Cardiac Resynchronization Therapy in an Asynchronous Heart Failure Model Induced by Left Bundle Branch Ablation and Rapid Pacing

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Published on: December 11, 2017

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Published on: May 5, 2020

O-Ring Aortic Banding Versus Traditional Transverse Aortic Constriction for Modeling Pressure Overload-Induced Cardiac Hypertrophy

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Published on: October 6, 2022

Area of Science:

Cardiovascular Science
Nephrology
Medical Device Engineering

Background:

Cardiorenal syndrome (CRS) presents a complex challenge in managing fluid balance.
Percutaneous mechanical circulatory support (MCS) devices are explored for CRS treatment.
Aortix™ is a novel percutaneous MCS device developed to aid diuresis in CRS patients.

Observation:

The Aortix™ device, at its nominal setting, was observed to cause end-organ hypoperfusion.
This hypoperfusion was linked to excessive blood acceleration.
Temporal-perfusion marker curves were utilized to analyze the physiological response.

Findings:

Excessive blood acceleration from the Aortix™ device can lead to end-organ hypoperfusion.
Modulating the device's speed shows potential for optimizing perfusion and therapeutic outcomes.
Patient-specific titration of device speed is a key consideration for safe and effective use.

Implications:

Findings suggest a need for careful device titration in clinical practice.
Device speed modulation is a critical factor for future Aortix™ development.
Further investigation into patient-specific parameters will enhance the application of this technology in CRS management.