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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...
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 I: Introduction01:30

Aneurysm I: Introduction

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...
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...

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Related Experiment Video

Updated: Jul 13, 2026

Measurement of Pulse Propagation Velocity, Distensibility and Strain in an Abdominal Aortic Aneurysm Mouse Model
09:32

Measurement of Pulse Propagation Velocity, Distensibility and Strain in an Abdominal Aortic Aneurysm Mouse Model

Published on: February 23, 2020

Aortic growth rates in chronic aortic dissection.

A M Kelly1, L E Quint, B Nan

  • 1Department of Radiology, Division of Thoracic Radiology, University of Michigan Medical Center, Ann Arbor, Michigan, USA. ainekell@med.umich.edu

Clinical Radiology
|July 31, 2007
PubMed
Summary

Descending aortic dissection shows significant enlargement, primarily in the false lumen, over time. Non-operated patients experienced greater aortic enlargement compared to those with proximal aortic grafts.

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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

Related Experiment Videos

Last Updated: Jul 13, 2026

Measurement of Pulse Propagation Velocity, Distensibility and Strain in an Abdominal Aortic Aneurysm Mouse Model
09:32

Measurement of Pulse Propagation Velocity, Distensibility and Strain in an Abdominal Aortic Aneurysm Mouse Model

Published on: February 23, 2020

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

Area of Science:

  • Cardiovascular Imaging
  • Thoracic Surgery
  • Vascular Medicine

Background:

  • Chronic aortic dissection involving the descending aorta is a serious condition.
  • Understanding aortic enlargement patterns is crucial for patient management.
  • Proximal aortic grafts are used in treating certain aortic dissections.

Purpose of the Study:

  • To compare the rates of descending aortic enlargement in patients with chronic aortic dissection.
  • To evaluate the incidence of complications in patients with and without proximal aortic grafts.
  • To determine the impact of surgical intervention on aortic diameter changes.

Main Methods:

  • Retrospective analysis of 52 patients with descending aortic dissection.
  • Computed tomography (CT) scans were used to measure aortic diameters (short axis, false lumen, true lumen) over time.
  • Follow-up ranged from 1 to 123 months, with 24 non-operated and 28 operated patients.

Main Results:

  • Both non-operated and operated patients showed significant increases in aortic diameters, mainly due to false lumen expansion.
  • Aortic enlargement rates were significantly higher in non-operated patients compared to operated patients.
  • Aortic complications occurred in 10 patients (4 non-operated, 6 operated).

Conclusions:

  • The false lumen in descending thoracic aortic dissections expands at a constant rate over time.
  • Non-operated patients exhibit greater aortic enlargement than those who have undergone proximal aortic grafting.
  • These findings have implications for monitoring and managing patients with chronic aortic dissection.