尖端形态和性别对严重的大动脉狭窄症中的定量门组成的影响
Kush P Patel1, Andrew Lin1,2, Niraj Kumar1,3
1Department of Cardiology, Barts Health NHS Trust, London, UK.
European heart journal. Cardiovascular Imaging
|June 20, 2023
概括
双大动脉在严重的大动脉狭窄时显示出比三大动脉更多的纤维化,特别是在女性中. 这一发现突出了基于顶数和性别的门组成的差异.
科学领域:
- 心血管成像 - 心血管成像
- 心脏病理学心脏病理学
- 生物医学工程 生物医学工程
背景情况:
- 大动脉狭窄 (AS) 涉及大动脉纤维化和化.
- 与男性相比,女性在AS中表现出更高比例的纤维化.
- 双主动脉 (BAV) 可能与三主动脉 (TAV) 有不同的疾病进展.
研究的目的:
- 为了研究大动脉顶形态 (双与三) 对定量组成的影响.
- 评估性别对狭窄性大动脉的纤维和性成分的影响.
- 为了确定纤维度比率与门形态和性别的关系,在严重的AS.
主要方法:
- 用对比增强的计算机断层扫描血管图 (CE-CTA) 用于定量分析.
- 半自动化软件量化了纤维和分数 (体积/门环形面积).
- 基于年龄,性别和并发症的BAV和TAV患者的倾向匹配 (1:1).
主要成果:
- 与三膜相比,双膜的纤维化得分明显高 (P=0.006).
- 双门和三门之间的calcific评分是相似的 (P=0.614).
- 患有BAV的女性比男性有更高的纤维化得分 (P=0.042),两种性别的纤维化度比男性更高.
结论:
- 双管中严重的大动脉狭窄的特点是,与三管相比,纤维化相对于化比例更高.
- 性别影响大动脉的组成,女性表现出较大的相对纤维化,特别是在双门中.
- 这些发现表明,在大动脉狭窄症中,基于门形态和性别的不同病理机制和潜在的治疗点.
相关概念视频
Mitral Stenosis I: Introduction
18
Mitral Valve Stenosis (MVS) is a heart condition where the mitral valve narrows, impeding blood circulation from the left atrium to the left ventricle. The etiology and pathophysiology of this condition are multifaceted, leading to a cascade of cardiovascular complications.Causes of Mitral Valve StenosisRheumatic Heart Disease: It is the main cause of mitral valve stenosis, particularly in developing nations. This condition arises from rheumatic fever, an inflammatory illness resulting from...
18
Heart Valves
5.0K
The human heart is a complex organ with an intricate system of valves that regulate blood flow. There are two main types of valves: atrioventricular (AV) valves and semilunar valves.
The AV valves prevent the backflow of blood from the ventricles to the atria during ventricular contraction. These valves function with the assistance of the chordae tendineae and papillary muscles. When the ventricles are relaxed, the chordae tendineae are slack, allowing blood to flow from the atria into the...
The AV valves prevent the backflow of blood from the ventricles to the atria during ventricular contraction. These valves function with the assistance of the chordae tendineae and papillary muscles. When the ventricles are relaxed, the chordae tendineae are slack, allowing blood to flow from the atria into the...
5.0K
Mitral Stenosis III: Medical Management
14
Mitral stenosis, a condition marked by the narrowing of the mitral valve, necessitates an integrated approach for effective management. This approach includes preventative measures, medical therapy, and surgical interventions to reduce symptoms and prevent complications.PreventionPrevention of mitral stenosis primarily focuses on reducing the incidence of bacterial infections, particularly streptococcal infections, which can lead to rheumatic fever and subsequent valvular damage. Timely...
14
Mitral Valve Prolapse I: Introduction
22
IntroductionThe mitral valve, one of the heart's four valves, regulates blood flow. These valves have flaps that open and close to direct blood properly through the heart and body. During each heartbeat, the flaps open for blood to pass through and seal shut to prevent backflow. Specifically, the mitral valve opens to allow blood flow from the heart's upper left chamber to the lower left chamber. It then closes securely as the lower left chamber contracts to pump blood to the body, preventing...
22
Aortic Regurgitation I: Introduction
19
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...
19
Aortic Regurgitation II: Clinical Features and Diagnostic Tests
33
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...
33


