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Related Concept Videos

Aortic Regurgitation I: Introduction01:15

Aortic Regurgitation I: Introduction

987
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...
987
Heart Valves01:16

Heart Valves

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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...
13.0K
Aortic Regurgitation II: Clinical Features and Diagnostic Tests01:22

Aortic Regurgitation II: Clinical Features and Diagnostic Tests

729
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...
729
Aortic Regurgitation III: Medical Management01:25

Aortic Regurgitation III: Medical Management

528
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...
528
Aortic Regurgitation IV: Nursing Management01:17

Aortic Regurgitation IV: Nursing Management

370
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...
370
Mitral Valve Prolapse I: Introduction01:27

Mitral Valve Prolapse I: Introduction

813
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...
813

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Updated: Mar 9, 2026

Four-Dimensional Computed Tomography-Guided Valve Sizing for Transcatheter Pulmonary Valve Replacement
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Quadricuspid Aortic Valve: A Comprehensive Review.

Shi-Min Yuan1

  • 1The First Hospital of Putian, Teaching Hospital, Fujian Medical University, Putian, Fujian Province, China.

Brazilian Journal of Cardiovascular Surgery
|January 12, 2017
PubMed
Summary

Quadricuspid aortic valve (QAV) is a rare congenital heart defect, often causing aortic regurgitation. Surgical intervention is considered for severe cases, with tricuspidalization a preferred repair technique.

Area of Science:

  • Cardiology
  • Congenital Heart Disease

Background:

  • Quadricuspid aortic valve (QAV) is a rare congenital anomaly.
  • It predominantly results in aortic regurgitation, with pure stenosis being uncommon (0.7%).
  • Associated congenital heart defects occur in 18-32% of patients.

Purpose of the Study:

  • To review the clinical manifestations, functional status, and management of QAV.
  • To highlight the importance of patient selection and surgical approach for QAV repair.
  • To emphasize the need for antibiotic prophylaxis in specific QAV cases.

Main Methods:

  • Literature review of QAV cases.
  • Analysis of clinical presentation and functional status.
  • Evaluation of surgical techniques and outcomes.

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Echocardiographic Approaches and Protocols for Comprehensive Phenotypic Characterization of Valvular Heart Disease in Mice
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Main Results:

  • QAV most commonly presents as aortic regurgitation.
  • Surgery is often required in the fifth to sixth decade of life.
  • Tricuspidalization is a favored repair method for QAV.

Conclusions:

  • Clinical outcomes for QAV depend on valve function and associated defects.
  • Careful patient selection and surgical strategy are critical for successful QAV management.
  • Antibiotic prophylaxis is essential for QAV patients with unequal cusps to prevent infective endocarditis.