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Related Concept Videos

Aortic Regurgitation II: Clinical Features and Diagnostic Tests01:22

Aortic Regurgitation II: Clinical Features and Diagnostic Tests

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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...
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Aortic Regurgitation III: Medical Management01:25

Aortic Regurgitation III: Medical Management

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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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Aortic Regurgitation I: Introduction01:15

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...
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Aneurysm I: Introduction01:30

Aneurysm I: Introduction

234
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...
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Aneurysm III: Interprofessional Care01:26

Aneurysm III: Interprofessional Care

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Aneurysm management involves either conservative medical therapy or surgical intervention, depending on the size and symptoms of the aneurysm. Conservative management is generally reserved for smaller, asymptomatic aneurysms, while larger or symptomatic aneurysms often necessitate surgical repair.Conservative Medical TherapyFor small, asymptomatic aneurysms, particularly abdominal aortic aneurysms (AAA) less than 5.5 centimeters in diameter, conservative medical therapy is recommended. This...
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Aneurysm II: Clinical Manifestations and Diagnostic Studies01:21

Aneurysm II: Clinical Manifestations and Diagnostic Studies

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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...
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Related Experiment Video

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O-Ring Aortic Banding Versus Traditional Transverse Aortic Constriction for Modeling Pressure Overload-Induced Cardiac Hypertrophy
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Does the Aortic Annulus Dilate After Aortic Root Remodeling?

Rajdeep Bilkhu1, Maite Tome2, Anna Marciniak2

  • 1Department of Cardiothoracic Surgery, St George's Hospital, London, United Kingdom.

The Annals of Thoracic Surgery
|December 18, 2019
PubMed
Summary
This summary is machine-generated.

Valve-sparing aortic root replacement (VSRR) using the remodeling technique without annuloplasty showed no significant aortic annular dilation. This study suggests routine annuloplasty may not be necessary for patients with an aortic annular diameter less than or equal to 25 mm.

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Area of Science:

  • Cardiovascular Surgery
  • Cardiac Surgery
  • Aortic Valve Surgery

Background:

  • Valve-sparing aortic root replacement (VSRR) is a surgical technique to repair the aortic root while preserving the native aortic valve.
  • The remodeling technique for VSRR does not stabilize the aortic annulus, raising concerns about potential long-term dilation and aortic regurgitation.
  • This study investigates the incidence of aortic annular dilation following VSRR using the remodeling technique without aortic annuloplasty.

Purpose of the Study:

  • To assess the long-term stability of the aortic annulus after valve-sparing aortic root replacement (VSRR) with the remodeling technique.
  • To determine if aortic annuloplasty is necessary in VSRR remodeling technique when the initial aortic annular diameter is within a certain range.

Main Methods:

  • Retrospective analysis of patients undergoing elective or urgent VSRR with the remodeling technique between 2005 and 2018.
  • Exclusion of patients undergoing arch and emergency surgery for acute type A aortic dissection.
  • Comparison of preoperative and postoperative aortic annulus diameters measured by transthoracic echocardiography, and recording of reintervention rates.

Main Results:

  • A total of 98 patients underwent VSRR, with 67.3% having connective tissue disorders.
  • Median follow-up was 7.1 years, with no significant increase in mean aortic annular diameter (24.2 mm preoperatively to 25.7 mm postoperatively, P = .403).
  • Freedom from moderate or severe aortic regurgitation was 97%, with only one patient requiring reintervention for aortic valve replacement.

Conclusions:

  • The remodeling technique for VSRR demonstrated no significant aortic annular dilation in selected patients.
  • The findings do not support the routine use of aortic annuloplasty in VSRR remodeling for patients with an aortic annular diameter less than or equal to 25 mm.