使用QRS-T角度分析区分沃尔夫-帕金森-怀特综合征与结心脉路
Ryo Nakagawa1, Kazuhisa Sato1, Yoko Yoshida1
1Division of Pediatric Electrophysiology, Pediatric Medical Care Center, Osaka City General Hospital, Osaka, Japan.
Pacing and clinical electrophysiology : PACE
|November 27, 2024
概括
区分沃尔夫 - 帕金森 - 怀特综合征 (WPW) 和带带通路 (FVP) 是一个挑战. QRS-T 角度,特别是 22 度的切线,在区分这些条件方面显示出有前途.
科学领域:
- 心脏病学 心脏病学
- 电力生理学 电力生理学
- 医学诊断 医学诊断 医学诊断
背景情况:
- 沃尔夫 - 帕金森 - 怀特综合征 (WPW) 和带带通路 (FVP) 具有共享的心电学三角波特征,使差异诊断复杂化.
- 带有狭窄QRS复合体的WPW类型B可以模仿FVP,需要改进的诊断方法.
研究的目的:
- 评估QRS-T角度在区分WPW综合征与FVP方面的有效性.
- 为了确定一个特定的QRS-T角切线值来区分WPW综合征和FVP.
主要方法:
- 追溯分析了2007年至2023年间诊断的40例WPW综合征和54例FVP病例.
- 排除标准包括A型WPW,宽QRS,间歇性WPW,心脏异常和最近的症状.
- 使用接收机操作特征 (ROC) 曲线分析,比较WPW和FVP组之间的QRS-T角度.
主要成果:
- 与FVP组 (17.8 ± 13.9°,p < 0.001) 相比,WPW组的平均QRS-T角度 (45.7 ± 46.3°) 在WPW组显著更大.
- 22°的最佳QRS-T切断角实现了65.0%的灵敏度和72.6%的特异性来区分WPW与FVP.
- 所有QRS-T角大于65°的病例都被确定为WPW综合征.
结论:
- QRS-T角度是区分WPW综合征和FVP的一个有价值的工具.
- 22°的QRS-T角度作为一个潜在的值来区分这两个条件.
相关概念视频
01:28Electrocardiogram 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...
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...
519
01:29Electrocardiogram
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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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01:16ECG Interpretation of Arrhythmias I: Sinus Arrhythmias
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Arrhythmias are disturbances in the heart's rhythm that lead to abnormal heartbeats. These irregularities can originate from different parts of the heart and are classified based on their origin and nature.
Types of Arrhythmias
Sinus Node Arrhythmias
Sinus Bradycardia: Originating from the sinoatrial (SA) node, sinus bradycardia involves slower impulses, resulting in a heart rate of less than 60 beats per minute (bpm). Causes include sleep, vagal stimulation, beta-blockers, hypothyroidism,...
Types of Arrhythmias
Sinus Node Arrhythmias
Sinus Bradycardia: Originating from the sinoatrial (SA) node, sinus bradycardia involves slower impulses, resulting in a heart rate of less than 60 beats per minute (bpm). Causes include sleep, vagal stimulation, beta-blockers, hypothyroidism,...
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01:24ECG Interpretation of Rhythms
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An electrocardiogram (ECG)graphically represents the heart's electrical activity on ECG paper or a monitor.
Components of the Electrocardiogram
The primary components of a normal ECG waveform in Normal sinus rhythm(NSR) include the P wave, PR interval, QRS complex, ST segment, T wave, and occasionally a U wave.
ECG waveforms are divided by vertical and horizontal lines at standard intervals.
The horizontal axis measures time and rate, and the vertical axis measures amplitude or voltage....
Components of the Electrocardiogram
The primary components of a normal ECG waveform in Normal sinus rhythm(NSR) include the P wave, PR interval, QRS complex, ST segment, T wave, and occasionally a U wave.
ECG waveforms are divided by vertical and horizontal lines at standard intervals.
The horizontal axis measures time and rate, and the vertical axis measures amplitude or voltage....
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01:28Disturbances in Heart Rhythm
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Arrhythmia or dysrhythmia refers to an abnormal heart rhythm caused by a defect in the heart's conduction system. It can cause the heart to beat irregularly, too quickly, or too slowly, leading to symptoms like chest pain, shortness of breath, and fainting. Factors such as stress, caffeine, alcohol, nicotine, cocaine, certain drugs, congenital defects, diseases, and electrolyte abnormalities can trigger arrhythmias.
Arrhythmias are categorized by their speed, rhythm, and origin. A slow...
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01:25Correlation between ECG and Cardiac Cycle
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The electrical signals recorded on an electrocardiogram (ECG) occur before the mechanical processes of contraction and relaxation during the cardiac cycle.
A cardiac action potential originates in the SA node and spreads throughout the atria and the AV node in approximately 0.03 seconds. This results in the P wave in an ECG and triggers atrial contraction. The action potential is then briefly slowed at the AV node, allowing the atria to contract and fill the ventricles with blood before...
A cardiac action potential originates in the SA node and spreads throughout the atria and the AV node in approximately 0.03 seconds. This results in the P wave in an ECG and triggers atrial contraction. The action potential is then briefly slowed at the AV node, allowing the atria to contract and fill the ventricles with blood before...
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