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Related Concept Videos

Aortic Regurgitation III: Medical Management01:25

Aortic Regurgitation III: Medical Management

392
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...
392
Aortic Regurgitation II: Clinical Features and Diagnostic Tests01:22

Aortic Regurgitation II: Clinical Features and Diagnostic Tests

402
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...
402
Aortic Regurgitation I: Introduction01:15

Aortic Regurgitation I: Introduction

472
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...
472
Aneurysm II: Clinical Manifestations and Diagnostic Studies01:21

Aneurysm II: Clinical Manifestations and Diagnostic Studies

288
Thoracic, aortic arch and abdominal aneurysms are significant vascular conditions that can present with various clinical manifestations and lead to serious complications. Understanding these manifestations and the appropriate diagnostic studies is essential for effective management and treatment.Thoracic Aortic AneurysmsThoracic aortic aneurysms often remain asymptomatic until they reach a size that impinges on adjacent structures. They typically cause deep, diffuse chest pain that radiates to...
288
Aneurysm I: Introduction01:30

Aneurysm I: Introduction

363
An aortic aneurysm is a localized outpouching or dilation at a weak point in the artery wall. It may involve different parts of the aorta, such as the abdominal aorta, aortic arch, or thoracic aorta.Etiological factorsSeveral disorders are associated with aortic aneurysms.Congenital causes, such as primary connective tissue disorders like Marfan syndrome, impact the integrity and strength of connective tissues, notably affecting the aorta. Marfan syndrome is a genetic disorder that specifically...
363

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Related Experiment Video

Updated: Jan 14, 2026

Novel and Innovative Hybrid Technique for Type A Aortic Dissection
06:26

Novel and Innovative Hybrid Technique for Type A Aortic Dissection

Published on: March 28, 2025

836

Alpha-Gal Syndrome and Aortic Valve Replacement.

Nabeel Sami1, Bharat Ravishankar1, Berhane Worku2

  • 1Division of Cardiology, Department of Medicine, New York Presbyterian Brooklyn Methodist Hospital, Brooklyn, New York, USA.

JACC. Case Reports
|October 17, 2025
PubMed
Summary
This summary is machine-generated.

Alpha-gal syndrome (AGS) complicates bioprosthetic valve choices due to alpha-gal presence. This case shows successful valve replacement in an AGS patient with careful management and prophylaxis.

Area of Science:

  • Cardiology
  • Immunology
  • Allergy

Background:

  • Alpha-gal syndrome (AGS) involves IgE hypersensitivity to alpha-gal, found in pork and beef.
Keywords:
Doppler ultrasoundaortic valvecardiac riskechocardiographystenosisvalve replacement

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  • This poses challenges for bioprosthetic heart valve selection due to alpha-gal in bovine and porcine valves.
  • Potential risks include allergic reactions and accelerated structural valve degeneration.