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相关概念视频

Acute Coronary Syndrome I: Introduction01:30

Acute Coronary Syndrome I: Introduction

Acute Coronary Syndrome (ACS) encompasses a spectrum of heart conditions caused by sudden obstruction of coronary arteries, typically resulting from the rupture of an atherosclerotic plaque and subsequent thrombus (blood clot) formation. This obstruction can lead to partial or complete blockage of blood flow, causing varying degrees of myocardial ischemia or infarction.ACS includes the following clinical entities:Unstable Angina (UA)Non-ST-Elevation Myocardial Infarction (NSTEMI)ST-Elevation...
Acute Coronary Syndrome IV: Interprofessional Care01:28

Acute Coronary Syndrome IV: Interprofessional Care

IntroductionThe management of Acute Coronary Syndrome (ACS) aims to minimize myocardial damage, preserve myocardial function, and prevent complications.Initial ManagementInpatient management involves continuous cardiac monitoring, preferably in an ICU, focusing on blood pressure, serum sodium, potassium, and creatinine levels, and urine output. Ongoing pharmacologic management is crucial for stabilizing the patient.Supplemental Oxygen: Administer supplemental oxygen if oxygen saturation is...
Dysrhythmias VI: Management of Dysrhythmias01:25

Dysrhythmias VI: Management of Dysrhythmias

Dysrhythmia management involves a multifaceted approach, incorporating pharmacological treatments, medical procedures, surgical interventions, lifestyle modifications, and patient education.Pharmacological ManagementAntiarrhythmic Drugs:Class I (Sodium Channel Blockers): This class includes quinidine and procainamide, which reduce the speed of impulse conduction in the heart, stabilize the cardiac membrane, and control arrhythmias. Quinidine and procainamide are Class IA agents that prolong the...
Cardiopulmonary Resuscitation III: AED Use01:23

Cardiopulmonary Resuscitation III: AED Use

Introduction to AEDAn Automated External Defibrillator (AED) is a portable medical device that analyzes the heart's rhythm and, if necessary, delivers an electrical shock to help the heart re-establish an effective rhythm during sudden cardiac arrest (SCA). SCA occurs when the heart suddenly and unexpectedly stops beating, leading to a loss of blood flow to the brain and other vital organs. In such emergencies, time is of the essence, and using an AED, combined with Cardiopulmonary...
Cardiomyopathy III: Hypertrophic Cardiomyopathy01:29

Cardiomyopathy III: Hypertrophic Cardiomyopathy

Hypertrophic cardiomyopathy, or HCM, is an autosomal dominant genetic disorder characterized by asymmetric left ventricular hypertrophy without ventricular dilation. It is more common in men and is typically diagnosed in young, athletic adults.EtiologyHCM is primarily genetic and is caused by mutations in genes encoding sarcomeric proteins. Researchers have identified over 1400 mutations across at least 11 different genes. Among these, the most frequently occurring mutations are found in the...
ECG Interpretation of Arrhythmias II: Atrial, Junctional and Ventricular Arrhythmias01:25

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Arrhythmia is a condition characterized by an irregular heart rhythm, with ECG changes that differ based on its origin and nature. The types of arrhythmias discussed below include atrial, junctional, and ventricular arrhythmias.Atrial ArrhythmiasPremature Atrial Complexes (PACs): PACs are early atrial beats caused by stress, caffeine, alcohol, electrolyte imbalances, hypoxia, hyperthyroidism, or certain medications (e.g., bronchodilators and decongestants). The ECG shows early P waves with an...

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相关实验视频

Updated: Jul 8, 2026

Catheter Ablation in Combination With Left Atrial Appendage Closure for Atrial Fibrillation
28:13

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Published on: February 26, 2013

在心肌梗塞发作后,成功地对电风暴进行了导管切除.

Dietmar Bänsch1, Feifan Oyang, Matthias Antz

  • 1Department of Cardiology, AK St. Georg, Hamburg, Germany.

Circulation
|December 10, 2003
PubMed
概括

在心肌梗塞后的患者中,射频除成功治疗了耐药心室心律不整. 这种导管切除的目标是过早的腹腔动脉,防止进一步的电风暴,并提供救助治疗选择.

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Last Updated: Jul 8, 2026

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28:13

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06:57

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Published on: January 31, 2019

科学领域:

  • 心脏病学 心脏病学
  • 电子生理学 电子生理学
  • 医疗器械 医疗器械

背景情况:

  • 四名患者 (57-77岁,3名男性) 经历了心肌梗塞后的耐药腹腔动脉节律失常症.
  • 心室节律失常始终由单态心室过早跳动 (VPBs) 与右束-分支块形态 (RBBB) 触发.

研究的目的:

  • 调查射频 (RF) 除对激发VPBs的可行性和有效性,在急性心肌梗塞后患有耐药腹腔动脉节律失常症的患者中.

主要方法:

  • 进行左心室 (LV) 映射,包括激活和节奏映射,以确定触发VPBs的来源.
  • 射频 (RF) 除针对的是VPBs之前的最早的激活点和Purkinje潜力.

主要成果:

  • 最早的VPBs激活局部于中外或中下LV.
  • 短,高频,低振幅的潜能在VPB之前记录了126-160毫秒,以及Purkinje潜能在鼻节律期间在QRS之前记录了23-26毫秒.
  • 在所有患者中,这些潜在的射频消去抑制了VPBs,在5至33个月的随访期内没有复发心室高心率或动.

结论:

  • 在心肌梗塞后发生的临床腹腔动脉节律失常症可以由VPBs触发.
  • 这些触发VPB的射频消去是一种可行的和有效的治疗方法,以防止耐药电风暴.
  • 触发VPBs的导管切除可以作为电风暴后心脏病患者的宝贵救助疗法.