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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...
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...
Mitral Regurgitation I: Introduction01:20

Mitral Regurgitation I: Introduction

Mitral regurgitation is characterized by the backward circulation of blood from the left ventricle to the left atrium during systole, a phase of the cardiac cycle when the heart contracts and pumps blood out of the chambers. This abnormal flow occurs primarily due to the dysfunction of the mitral valve or its supporting structures, which include the mitral leaflets, chordae tendineae, annulus, and papillary muscles.Etiology and Mechanisms:Primary Mitral Regurgitation: This type arises from...
Mitral Regurgitation IV: Nursing Management01:28

Mitral Regurgitation IV: Nursing Management

Mitral regurgitation (MR) is a condition where the mitral valve does not close properly, leading to the backward flow of blood from the left ventricle into the left atrium during systole. This condition can arise from various causes, including rheumatic fever, infective endocarditis, or degenerative valve disease. Effective nursing management is crucial to optimizing patient outcomes and involves comprehensive assessment and targeted interventions.Comprehensive Patient AssessmentA detailed...
Mitral Regurgitation II: Clinical Features and Diagnostic Tests01:23

Mitral Regurgitation II: Clinical Features and Diagnostic Tests

Mitral regurgitation (MR) is a valvular heart disorder in which the mitral valve fails to close tightly, allowing blood to leak backward into the heart. Understanding the clinical manifestations, assessment, diagnostic findings, and medical management of MR is crucial to effectively managing affected patients.Clinical Manifestations of Mitral RegurgitationMitral regurgitation can be acute or chronic, each presenting differently and requiring different approaches:1. Acute Mitral...
Aortic Regurgitation IV: Nursing Management01:17

Aortic Regurgitation IV: Nursing Management

A nurse managing a patient with aortic regurgitation begins with a comprehensive assessment, including a review of the patient's medical history, family history, and lifestyle factors. During the cardiac examination, the nurse listens for heart sounds and checks for signs of valve abnormalities. The nurse also observes for symptoms such as dyspnea, orthopnea, and paroxysmal nocturnal dyspnea and assesses the patient's endurance and daily activity tolerance.Based on the findings, the nurse...

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Related Experiment Video

Updated: Jun 21, 2026

Chronic Ovine Model of Right Ventricular Failure and Functional Tricuspid Regurgitation
08:43

Chronic Ovine Model of Right Ventricular Failure and Functional Tricuspid Regurgitation

Published on: March 17, 2023

Biphasic pulmonary regurgitation.

George V Moukarbel1, Amil M Shah, Amanda Tinnemore

  • 1Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA.

Echocardiography (Mount Kisco, N.Y.)
|July 15, 2009
PubMed
Summary
This summary is machine-generated.

A patient with first-degree atrioventricular (AV) block and pulmonary regurgitation showed a biphasic pattern on echocardiogram. This finding may offer insights into the underlying mechanisms of valvular heart disease.

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In vitro Assessment of Aortic Regurgitation Using Four-Dimensional Flow Magnetic Resonance Imaging
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In vitro Assessment of Aortic Regurgitation Using Four-Dimensional Flow Magnetic Resonance Imaging

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Chronic Thromboembolic Pulmonary Hypertension and Assessment of Right Ventricular Function in the Piglet
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Chronic Thromboembolic Pulmonary Hypertension and Assessment of Right Ventricular Function in the Piglet

Published on: November 4, 2015

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Last Updated: Jun 21, 2026

Chronic Ovine Model of Right Ventricular Failure and Functional Tricuspid Regurgitation
08:43

Chronic Ovine Model of Right Ventricular Failure and Functional Tricuspid Regurgitation

Published on: March 17, 2023

In vitro Assessment of Aortic Regurgitation Using Four-Dimensional Flow Magnetic Resonance Imaging
11:16

In vitro Assessment of Aortic Regurgitation Using Four-Dimensional Flow Magnetic Resonance Imaging

Published on: February 25, 2022

Chronic Thromboembolic Pulmonary Hypertension and Assessment of Right Ventricular Function in the Piglet
09:22

Chronic Thromboembolic Pulmonary Hypertension and Assessment of Right Ventricular Function in the Piglet

Published on: November 4, 2015

Area of Science:

  • Cardiology
  • Cardiac Imaging
  • Valvular Heart Disease

Background:

  • First-degree atrioventricular (AV) block is a common finding.
  • Pulmonary regurgitation can occur due to various etiologies.
  • Echocardiography is a primary tool for cardiac assessment.

Observation:

  • A transthoracic echocardiogram was performed on a patient with AV block and pulmonary regurgitation.
  • Continuous wave Doppler of the pulmonic valve revealed an unusual biphasic regurgitation pattern.

Findings:

  • The biphasic pattern suggests complex hemodynamic interactions during ventricular diastole.
  • This specific Doppler signature may be linked to the patient's underlying AV block and valvular condition.

Implications:

  • Understanding this pattern can enhance diagnostic accuracy for pulmonary regurgitation.
  • Further research may elucidate the relationship between AV block and specific regurgitation morphologies.
  • This case highlights the importance of detailed Doppler analysis in echocardiography.