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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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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 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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Related Experiment Video

Updated: Sep 15, 2025

Murine Model of Thoracic Aortic Dissection Induced by Oral &#946;-Aminopropionitrile and Subcutaneous Angiotensin II Infusion
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Murine Model of Thoracic Aortic Dissection Induced by Oral β-Aminopropionitrile and Subcutaneous Angiotensin II Infusion

Published on: May 16, 2025

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Relationship between sleep characteristics and aortic aneurysm/dissection: a two-sample Mendelian randomisation

Yi-Fan Zeng1, Xin-Yu Wei2,3,4, Qiu-Guo Wang1

  • 1Department of Cardiovascular Surgery, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China.

BMJ Open
|July 14, 2025
PubMed
Summary
This summary is machine-generated.

This study found no genetic evidence linking sleep traits like duration or insomnia to aortic aneurysm and dissection (AAD). Further randomized controlled trials are needed to confirm the relationship between sleep and AAD.

Keywords:
CARDIOLOGYRisk FactorsSLEEP MEDICINE

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Area of Science:

  • Genetics
  • Sleep Medicine
  • Cardiovascular Disease

Background:

  • The connection between sleep characteristics and aortic aneurysm and dissection (AAD) is not well understood.
  • Investigating potential causal links is crucial for understanding AAD etiology.

Purpose of the Study:

  • To investigate the potential causal relationship between seven sleep-related traits and aortic aneurysm and dissection (AAD) using a Mendelian randomization approach.
  • To assess genetic evidence for causality between sleep characteristics and AAD.

Main Methods:

  • A two-sample Mendelian randomization (MR) study was conducted.
  • Seven sleep traits (sleep duration, chronotype, insomnia, snoring, etc.) were analyzed using genetic variants from genome-wide association studies (GWAS).
  • Causality was assessed using inverse-variance weighting (IVW) and other MR methods, with sensitivity analyses for pleiotropy and heterogeneity.

Main Results:

  • No genetic evidence of a causal relationship was found between any of the seven sleep traits and aortic aneurysm.
  • Specific sleep traits examined included sleep duration, chronotype, insomnia, and snoring.
  • Sensitivity analyses confirmed the robustness and reliability of the findings, showing no link to abdominal or thoracic aortic aneurysms or aortic dissection.

Conclusions:

  • The study found no genetic evidence supporting a causal link between sleep characteristics and aortic aneurysm and dissection (AAD).
  • Further large-scale randomized controlled trials are recommended to definitively establish or refute a causal relationship between sleep and AAD.