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相关概念视频

Aortic Regurgitation I: Introduction01:15

Aortic Regurgitation I: Introduction

1.6K
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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Aortic Regurgitation II: Clinical Features and Diagnostic Tests01:22

Aortic Regurgitation II: Clinical Features and Diagnostic Tests

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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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Aortic Regurgitation III: Medical Management01:25

Aortic Regurgitation III: Medical Management

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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...
598
Aneurysm I: Introduction01:30

Aneurysm I: Introduction

650
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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Aneurysm II: Clinical Manifestations and Diagnostic Studies01:21

Aneurysm II: Clinical Manifestations and Diagnostic Studies

589
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...
589
Aneurysm III: Interprofessional Care01:26

Aneurysm III: Interprofessional Care

478
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...
478

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Manufacturing Abdominal Aorta Hydrogel Tissue-Mimicking Phantoms for Ultrasound Elastography Validation
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胸前动脉动脉瘤生长率和预测因素:系统性审查和元分析.

Matthew Henry1, Carlos A Campello Jorge1, Pieter A J van Bakel2,3

  • 1Department of Radiology University of Michigan Ann Arbor MI USA.

Journal of the American Heart Association
|March 27, 2025
PubMed
概括

胸前动脉动脉瘤 (TAA) 的增长速度因原因而异,上升的TAA通常每年增长0.25-1毫米. 对大多数患者来说,每年监测可能过于频繁,并且缺乏生长预测因素.

关键词:
洛伊斯迪茨综合征 (LoeysDietz综合征) 是一个马芬综合征是什么意思 马芬综合征是什么意思双主动脉门的双主动脉门增长率增长率的增长速度是什么这是一个元分析.系统性审查 系统性审查胸前大动脉动脉瘤是什么?

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Murine Surgical Model of Topical Elastase Induced Descending Thoracic Aortic Aneurysm
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科学领域:

  • 心脏病学 心脏病学
  • 血管外科 血管外科
  • 遗传学 遗传学 是一个

背景情况:

  • 胸前动脉动脉瘤 (TAA) 是一种严重的疾病,进展变化不定.
  • 了解生长率 (GR) 和预测因素对于患者管理至关重要.
  • 这项研究侧重于综合症,双主动脉和零星的TAA.

研究的目的:

  • 系统地审查和元分析胸前动脉动脉瘤 (TAA) 的生长率 (GR).
  • 为了确定TAA增长的潜在预测因素.
  • 综合不同TAA病因学的证据.

主要方法:

  • 发表的研究的系统审查和元分析.
  • 搜索在线数据库,查找无症状TAA的成年患者.
  • 综合症,双主动脉和零星TAA组的计算聚合GRs.

主要成果:

  • 包括85项研究在综述中和55项在元分析中.
  • 平均GRs有所不同:特纳综合征 (0.25毫米/年),马方综合征 (0.45毫米/年),洛伊斯-迪茨综合征 (0.81毫米/年).
  • 双动脉TAA GR为手术前的0.37毫米/年和手术后的0.18毫米/年. 上升的零星TAAGR为0.33毫米/年,下降的TAAGR为2.71毫米/年.

结论:

  • 上升的TAA通常在0.25-1毫米/年之间生长.
  • 目前的年度监测频率可能过高,无法检测许多TAA病例的增长.
  • 只有有限的高质量研究存在,TAA增长的预测因素仍然未被确定.