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Related Concept Videos

Aneurysm I: Introduction01:30

Aneurysm I: Introduction

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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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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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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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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 III: Interprofessional Care01:26

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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 (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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Updates in aortic wall pathology.

Hiroaki Osada1, Kenji Minatoya2

  • 1Department of Cardiovascular Surgery, Graduate School of Medicine, Kyoto University, 54 Shogoin-Kawaharacho, Sakyo-ku, Kyoto, 606-8507, Japan.

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Summary

The vasa vasorum

Keywords:
Aortic aneurysmAortic dissectionIntramural hematomaMedial degenerationPathologyVasa vasorum

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Area of Science:

  • Vascular Biology and Pathology

Background:

  • Aortic dissection and aneurysm pathogenesis remain incompletely understood.
  • The vasa vasorum, a capillary network in the aortic wall, is crucial for its structure and function.

Purpose of the Study:

  • To review pathological changes in the aortic media and vasa vasorum in aortic dissection and aneurysm.
  • To elucidate the role of vasa vasorum impairment in aortic wall pathology.

Main Methods:

  • Literature review of studies on aortic dissection and aneurysm.
  • Analysis of pathological changes in aortic medial tissue and vasa vasorum.

Main Results:

  • Vasa vasorum dysfunction can lead to aortic medial degeneration via hypoxia and nutrient transfer impairment.
  • Pathological changes in the aortic media and vasa vasorum are key in aortic wall abnormalities.

Conclusions:

  • Understanding vasa vasorum pathology is essential for comprehending aortic dissection and aneurysm development.
  • Targeting vasa vasorum function may offer new therapeutic strategies for aortic diseases.