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Heart Valves

Heart Valves

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...

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Updated: Jun 23, 2025

Full-root Aortic Valve Replacement by Stentless Aortic Xenografts in Patients with Small Aortic Roots

Full-root Aortic Valve Replacement by Stentless Aortic Xenografts in Patients with Small Aortic Roots

Published on: May 21, 2017

在主动脉新皮化后的中期结果.

Anatol Prinzing¹, Johannes Boehm¹, Melchior Burri¹

¹Department of Cardiovascular Surgery, Institute Insure, German Heart Center Munich, School of Medicine & Health, Technical University of Munich, Munich, Germany.

JTCVS techniques

|June 20, 2024

概括

大动脉的新皮化显示出卓越的中期耐用性和生存率. 这种手术保持低压梯度,结构退化和生物假体失效率低,使其成为大动脉病的可行选择.

关键词:

大动脉门的大动脉门甲状腺膜新皮化症自主性心脏周心脏.一个心脏门的门.

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Technique and Patient Selection Criteria of Right Anterior Mini-Thoracotomy for Minimal Access Aortic Valve Replacement

Technique and Patient Selection Criteria of Right Anterior Mini-Thoracotomy for Minimal Access Aortic Valve Replacement

Published on: March 26, 2018

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科学领域:

心血管外科心血管外科
心脏门维修心脏门维修
生物材料在医学中的应用

背景情况:

使用自主心膜进行的大动脉新皮化是大动脉疾病的新兴手术技术.
在此过程中,中期耐用性和门相关事件需要进一步调查.

研究的目的:

为了评估大动脉膜新囊化与自心周心的中期耐用性和临床结果.
评估门相关事件,包括结构门恶化和重新运行率.

主要方法:

一组由162名患者组成的队列,在2016年至2021年期间接受了主动脉新皮化.
胸前心声扫描在手术前,在出院时,以及每年在术后进行.
收集和分析了关于生存,重新操作,结构膜恶化和血液动力学表现的数据.

主要成果:

平均随访时间为3.5年. 在5年内,中度/严重结构损坏的累积发病率为9.82%±3.87%,生物假体失效率为12.1%±4.12%.
5年生存率为97.3%±1.4%,无需重新手术的比例为91.3%±2.4%.
在术后和随访期间保持了低压梯度.

结论:

大动脉的新囊化显示出有利的中期血液动力学性能和优异的生存率.
结构退化的低率和生物假体失效表明耐用性很好.
内心炎是重新手术的首要症状,强调了预防感染的重要性.