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相关概念视频

Aortic Regurgitation III: Medical Management01:25

Aortic Regurgitation III: Medical Management

51
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...
51
Cardiac Catheterization II: Right Heart Catheterization01:21

Cardiac Catheterization II: Right Heart Catheterization

169
Right Heart Catheterization: An OverviewRight heart catheterization is an invasive diagnostic procedure that measures right-sided cardiac and pulmonary artery pressures, calculates cardiac output, and identifies intracardiac shunts. It provides detailed hemodynamic data essential for diagnosing and managing various cardiovascular conditions, such as pulmonary hypertension.Access SitesCommon access sites for right heart catheterization include the internal jugular vein in the neck region, the...
169
Aortic Regurgitation I: Introduction01:15

Aortic Regurgitation I: Introduction

45
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...
45
Dysrhythmias IV: Characteristics of Bradyarrhythmias01:18

Dysrhythmias IV: Characteristics of Bradyarrhythmias

123
Bradyarrhythmias are cardiac rhythm disorders characterized by a slower-than-normal heart rate, typically defined as fewer than 60 beats per minute. Some of which are discussed here:Sinus BradycardiaSinus bradycardia presents a heart rate lower than 60 beats per minute, with a regular rhythm originating from the SA node. The ECG typically shows normal P waves preceding each QRS complex, a normal PR interval (0.12 to 0.20 seconds), and a normal QRS duration (0.06 to 0.10 seconds).First-Degree AV...
123
Aortic Regurgitation II: Clinical Features and Diagnostic Tests01:22

Aortic Regurgitation II: Clinical Features and Diagnostic Tests

59
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...
59
Mitral Valve Prolapse II: Assessment and Management01:22

Mitral Valve Prolapse II: Assessment and Management

44
IntroductionA range of clinical features characterizes Mitral Valve Prolapse (MVP), but it is important to note that many individuals with MVP are asymptomatic and may remain so throughout their lives. For those who do exhibit symptoms, the following are the key clinical features:Palpitations: This is a common symptom where individuals feel an irregular or rapid heartbeat. Palpitations in MVP are often due to arrhythmias such as premature ventricular contractions or supraventricular...
44

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相关实验视频

Updated: Sep 16, 2025

Technique and Patient Selection Criteria of Right Anterior Mini-Thoracotomy for Minimal Access Aortic Valve Replacement
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患有先前存在的右捆支部阻塞的患者中心脏起器风险分层,正在接受跨导管大动脉置换.

Alejandro Travieso1, Jorge Nuche2, Gabriela Tirado-Conte1

  • 1Cardiovascular Institute, Hospital Clínico San Carlos, IdISSC, Madrid, Spain.

The Canadian journal of cardiology
|July 7, 2025
PubMed
概括

经过过导管大动脉置换 (TAVR) 的右束分支阻塞 (RBBB) 患者有永久心脏起器植入 (PPI) 的高风险. 女性性别,延长PR段和自扩张门预测PPI比率更高.

关键词:
永久的心脏起器植入植入.右捆的分支区块分支区块.通过导管更换大动脉门.

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科学领域:

  • 心脏病学 心脏病学
  • 干预心脏病学 干预心脏病学
  • 心脏电生理学 心脏电生理学

背景情况:

  • 患有先前存在的右捆支部阻塞 (RBBB) 的患者接受过导管大动脉置换 (TAVR) 具有永久起器植入 (PPI) 的高风险.
  • 在这种特定的患者亚群中,PPI的预测因子尚未得到很好的定义.

研究的目的:

  • 在基线右捆支部阻塞 (RBBB) 患者中确定永久起器植入 (PPI) 的预测因子,这些患者接受过导管大动脉置换 (TAVR).
  • 在这个患者群体中开发PPI的风险分层模型.

主要方法:

  • 对530名基线RBBB没有起器接受TAVR的患者进行了回顾性多中心研究.
  • 主要终点是30天后的PPI发生率.
  • 分析基线特征,心电学参数和计算机断层扫描结果,以确定PPI预测因子.

主要成果:

  • 在30天的PPI发病率为42.2%.
  • 与较高的PPI率相关的预测因素包括女性性别,延长PR段 (> 240毫秒),以及使用自扩张.
  • 门到环超大 > 10% 和较小的左心室外流通道也与PPI有关.
  • 一个包括女性性别,PR>240毫秒和自扩张的预测模型估计PPI概率从32.0%到76.8%.

结论:

  • 在接受TAVR的基线RBBB患者中,PPI在女性,长期PR段患者和用自扩张治疗的患者中更为频繁.
  • 使用这些因素进行风险分层可以帮助识别低风险或高风险的个人.