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Related Concept Videos

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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Aortic Regurgitation II: Clinical Features and Diagnostic Tests01:22

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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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The Aorta01:14

The Aorta

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The aorta is the largest artery in the human body. It originates from the left ventricle of the heart and extends down to the abdomen, where it splits into two smaller arteries. Structurally, it can be divided into four main parts: the ascending aorta, the aortic arch, the thoracic aorta, and the abdominal aorta.
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Aneurysm II: Clinical Manifestations and Diagnostic Studies01:21

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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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Aneurysm I: Introduction01:30

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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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Updated: Dec 4, 2025

Ultrasound Imaging of the Thoracic and Abdominal Aorta in Mice to Determine Aneurysm Dimensions
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Ascending Aortic Diameter after Dissection Does Not Reflect Size before Dissection.

Qais W Saleh1,2,3, Axel C P Diederichsen2,3,4, Jes S Lindholt1,2,3

  • 1Department of Thoracic-, Cardiac- and Vascular Surgery, Odense University Hospital, Odense, Denmark.

EJVES Vascular Forum
|October 22, 2020
PubMed
Summary
This summary is machine-generated.

Ascending aortic diameter is a poor predictor of aortic dissection. Pre-dissection measurements showed significant diameter changes, indicating current guidelines may need revision for prophylactic aneurysm repair.

Keywords:
Acute diseaseAortic aneurysmComputed tomographyDissectingOrgan SizeThoracic aneurysm

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Area of Science:

  • Cardiovascular Surgery
  • Aortic Aneurysm Research

Background:

  • Current prophylactic resection guidelines for ascending aortic aneurysms rely on post-dissection diameter.
  • This diameter may not accurately represent the aortic size before dissection occurs.

Purpose of the Study:

  • To evaluate the predictive value of pre-dissection ascending aortic diameter for aortic dissection.
  • To compare aortic diameters before and after dissection.

Main Methods:

  • Retrospective analysis of 34 patients with available pre- and post-dissection CT scans.
  • Comparison of aortic diameters across various segments, including the ascending aorta.

Main Results:

  • A statistically significant difference in aortic diameters was observed from the sinotubular junction to the proximal abdominal aorta.
  • The largest mean diameter increase was noted in the ascending aorta (7.6 mm ± 4.5 mm).

Conclusions:

  • Ascending aortic diameter is an unreliable predictor of dissection in most patients.
  • Pre-dissection aortic dimensions significantly differ from post-dissection measurements, challenging current surgical guidelines.