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相关概念视频

Pulse rhythm01:30

Pulse rhythm

1.7K
Pulse rhythm refers to the pattern of pulsations within specific intervals, offering valuable insights into the regularity or irregularity of the heart's beats as observed through the pattern of pulsation within specific intervals. A regular pulse exhibits a consistent heart rate with uniform waveforms and pulsation force, variations of which can be classified as normal, weak, or bounding.
Conversely, an irregular pulse pattern is termed dysrhythmia, stemming from disruptions in cardiac...
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Electrocardiogram01:29

Electrocardiogram

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An electrocardiogram (ECG or EKG) is a critical diagnostic tool that records the electrical signals produced by the heart during each heartbeat. This recording is achieved through electrodes placed strategically on the arms, legs, and chest. The electrocardiograph amplifies these signals and produces 12 distinct tracings, offering a comprehensive understanding of the heart's electrical activity.
Three major waveforms are present in a typical ECG recording: the P wave, the QRS complex, and...
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Electrocardiogram Fundamentals01:28

Electrocardiogram Fundamentals

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Introduction
An electrocardiogram (ECG) is a diagnostic tool for identifying cardiac conditions such as arrhythmias, conduction abnormalities, and myocardial ischemia.
Definition
An electrocardiogram (ECG) visualizes the heart's electrical activity by tracing the electrical movement associated with each heartbeat on a graph or monitor. As the heart beats, an electrical wave passes through it, correlating with the cardiac cycle events.
Parts of an ECG
An ECG utilizes electrodes on the skin...
2.2K
Acute Coronary Syndrome III: Diagnostic Studies01:30

Acute Coronary Syndrome III: Diagnostic Studies

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Diagnosing acute coronary syndrome or ACS begins with a thorough patient history. Notable symptoms include central, crushing chest pain radiating to the left arm, neck, jaw, or back, along with shortness of breath, sweating (diaphoresis), nausea, vomiting, dizziness, and palpitations.It is crucial to note any history of cardiac illnesses and assess risk factors, including age, gender, smoking, hypertension, diabetes, hyperlipidemia, and a sedentary lifestyle.During physical examination, vital...
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Dysrhythmias IV: Characteristics of Bradyarrhythmias01:18

Dysrhythmias IV: Characteristics of Bradyarrhythmias

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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...
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Dysrhythmias V: Evaluating Dysrhythmias01:30

Dysrhythmias V: Evaluating Dysrhythmias

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Dysrhythmias, also known as arrhythmias, are disturbances in the heart's rhythm that range from benign to life-threatening. A thorough evaluation is crucial for appropriate management and involves a comprehensive medical history, physical examination, and various diagnostic tests.Medical HistorySymptoms: Collect detailed information on palpitations, dizziness, syncope, chest pain, and fatigue. Note their onset, frequency, and triggers.Previous Cardiac Issues: Document any history of heart...
428

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相关实验视频

Updated: May 5, 2026

A Research Method For Detecting Transient Myocardial Ischemia In Patients With Suspected Acute Coronary Syndrome Using Continuous ST-segment Analysis
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A Research Method For Detecting Transient Myocardial Ischemia In Patients With Suspected Acute Coronary Syndrome Using Continuous ST-segment Analysis

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长期跟踪对患者进行电心图谱的长期跟踪,这些人有右束枝块和ST段在前线V1到V3的升高.

Josep Brugada1, Ramon Brugada, Charles Antzelevitch

  • 1Arrhythmia Section, Cardiovascular Institute, Hospital Clínic, University of Barcelona, Spain. jbrugada@medicina.ub.es

Circulation
|January 5, 2002
PubMed
概括
此摘要是机器生成的。

布鲁加达表型的特征是右束枝阻塞和ST升高,表明恶性心室节律失常和突然心脏死亡的风险. 症状患者和无症状患者的预后较差,具有特定的心电图发现和诱导性心律失常.

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A Research Method For Detecting Transient Myocardial Ischemia In Patients With Suspected Acute Coronary Syndrome Using Continuous ST-segment Analysis
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科学领域:

  • 心脏病学 心脏病学
  • 电子生理学 电子生理学
  • 突然的心脏病死亡.

背景情况:

  • 布鲁加达表型 (右捆-分支块与ST在V1-V3的升高) 越来越多地在堕胎心脏突发死亡和无症状个体的患者中被发现.
  • 它的预后意义,特别是在无症状病例中,仍然是调查的主题.

研究的目的:

  • 分析布鲁加达表型患者的临床,电生理学和随访数据.
  • 确定布鲁加达表型在不同患者群体中的预后意义.

主要方法:

  • 对334名布鲁加达表型患者的临床,电生理学和随访数据的分析.
  • 患者被分为三组:复苏心脏骤停 (A组),同步发作 (B组) 和无症状 (C组).
  • 通过电生理学研究评估了心室心律失常的诱导性.

主要成果:

  • 在83% (A组),63% (B组) 和33% (C组) 的患者中,持续性心室失常是可诱导的.
  • 在随访期间,62%的A组和19%的B组患者出现了新的心律失常事件.
  • 在无症状个体 (C组) 中,8%的人经历了第一次心律失常事件,诱导性和基底心电图发现预测了发生.

结论:

  • 布鲁加达表型是恶性心室节律失常和突然死亡的标志物.
  • 在有症状的患者中,心律失常的复发率很高.
  • 无症状的个体具有自发性异常心电图和诱导性心律失常的预后较差.