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Related Concept Videos

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...
Aneurysm III: Interprofessional Care01:26

Aneurysm III: Interprofessional Care

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...
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 III: Medical Management01:25

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

Aneurysm II: Clinical Manifestations and Diagnostic Studies

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...
Aneurysm IV: Nursing Management01:22

Aneurysm IV: Nursing Management

Vigilant monitoring for aneurysm rupture is essential for patients undergoing aortic surgery.Preoperative Nursing ManagementContinuously monitor the patient for manifestations of aneurysm rupture, such as pallor, weakness, tachycardia, hypotension, abdominal, back, groin, or periumbilical pain, changes in consciousness, and a pulsating abdominal mass. Regularly assess the patient's peripheral pulses.Instruct the patient to consume a clear liquid diet the day before surgery and administer...

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Related Experiment Video

Updated: Jul 2, 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

Determining the aortic root diameter necessitating replacement during acute type A aortic dissection repair.

Akihiro Yoshitake1, Naohiko Oki1, Osamu Kinoshita1

  • 1Department of Cardiovascular Surgery, Saitama Medical University International Medical Center, Saitama, Japan.

JTCVS Open
|July 1, 2026
PubMed
Summary

For acute type A aortic dissection (ATAAD) repair, aortic roots ≥50 mm require replacement. Roots <50 mm can be preserved, showing similar survival and lower reoperation rates.

Keywords:
acute type A aortic dissectionaortic root diameterroot preservation

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Standardized Technique of Aortic Valve Re-implantation for Valve-sparing Aortic Root Replacement
14:14

Standardized Technique of Aortic Valve Re-implantation for Valve-sparing Aortic Root Replacement

Published on: December 11, 2017

Area of Science:

  • Cardiovascular Surgery
  • Thoracic Surgery
  • Aortic Dissection Research

Background:

  • Acute type A aortic dissection (ATAAD) is a life-threatening condition requiring prompt surgical intervention.
  • Management of the aortic root during ATAAD repair is crucial for long-term outcomes.
  • Current guidelines vary on the threshold for aortic root replacement versus preservation.

Purpose of the Study:

  • To evaluate long-term outcomes following aortic root preservation in ATAAD repair.
  • To identify the specific aortic root diameter that necessitates concomitant replacement during ATAAD surgery.

Main Methods:

  • Retrospective analysis of 681 ATAAD patients from January 2010 to December 2023.
  • Exclusion of patients with bicuspid aortic valve and connective tissue disorders.
  • Categorization into three groups based on aortic root diameter: <45 mm, ≥45 to <50 mm, and ≥50 mm.

Main Results:

  • No significant differences in perioperative mortality or stroke were observed across groups.
  • Long-term survival rates were comparable between groups with preserved roots (<50 mm) and replaced roots (≥50 mm).
  • Freedom from proximal aortic reoperation was significantly lower in the ≥50 mm group (72.0% at 5 years, 28.0% at 10 years) compared to smaller diameters.

Conclusions:

  • Aortic root diameter ≥50 mm is associated with significantly higher rates of proximal aortic reoperation, warranting replacement during ATAAD repair.
  • Aortic roots <50 mm, including those ≥45 mm, can be safely preserved with favorable long-term outcomes.
  • Preservation of the native aortic root in ATAAD repair is feasible and effective for diameters less than 50 mm.