相关实验视频
Updated: Jun 25, 2025
04:45
Real-Time Electrocardiogram Monitoring During Treadmill Training in Mice
Published on: May 5, 2022
2.4K
运动员和非运动员没有心脏病的QRS碎片化的生理变化
Georgios A Christou1,2, Maria A Christou1, Konstantinos A Christou1
1Department of Radiology, Faculty of Medicine, University of Ioannina, 45332 Ioannina, Greece.
Journal of clinical medicine
|May 25, 2024
概括
没有心脏病的人群中的QRS碎片化与体重指数和呼吸有关. 在运动员中,V1 QRS碎片化可能表明由于训练而导致的心脏适应.
科学领域:
- 心脏病学 心脏病学
- 电力生理学 电力生理学
- 运动心脏病学 运动心脏病学
背景情况:
- 在没有已知的心脏病的个体中,QRS碎片化 (QRSf) 通常与死亡率增加无关.
- 了解该人群中QRSf的生理决定因素对于准确的解释至关重要.
研究的目的:
- 在没有已知的心脏病的无症状个体中调查QRS碎片化的生理决定因素.
- 探索运动员和非运动员之间的QRSf特征和决定因素的差异.
主要方法:
- 研究了163名无症状个体 (54名运动员,109名非运动员) 患有QRS碎片化但没有心脏病.
- 评估QRS碎片化是在卧卧,吸气后和站立后的姿势,以及运动期间.
- 对QRS碎片化变化的后续评估发生在平均2.3年内.
主要成果:
- III是QRSf最常见的,其次是V1和aVF. 在V1中的QRS碎片化在运动员中更为频繁.
- 在运动员中,V1 QRSf是由右心室外流通道近接直径 (RVOTproxi) 的增加独立预测的.
- 深度灵感解决了V1 QRSf,在非运动员中比运动员中更多. 导线II/aVF中的QRSf与较高的BMI相关. 训练年龄预测了运动员的新V1QRSf,而BMI降低与aVF中的QRSf分辨率相关.
结论:
- 与RVOTproxi相关的V1中的QRS碎片化是运动员的特征,可能意味着与运动有关的心脏适应.
- 前面平面QRS碎片化受体质指数 (BMI) 和呼吸阶段的影响.
- 深呼吸后V1 QRS碎片化的持续性可能是运动诱导心脏适应的特定标志物.
更多相关视频
08:28Methods for ECG Evaluation of Indicators of Cardiac Risk, and Susceptibility to Aconitine-induced Arrhythmias in Rats Following Status Epilepticus
Published on: April 5, 2011
17.8K
05:48Autonomic Function Following Concussion in Youth Athletes: An Exploration of Heart Rate Variability Using 24-hour Recording Methodology
Published on: September 21, 2018
10.1K
相关概念视频
01:28Disturbances in Heart Rhythm
936
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...
Arrhythmias are categorized by their speed, rhythm, and origin. A slow...
936
01:29Electrocardiogram
2.3K
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...
Three major waveforms are present in a typical ECG recording: the P wave, the QRS complex, and...
2.3K
01:20Exercise and Cardiovascular Response
787
Exercise significantly impacts cardiovascular response, which is crucial for understanding patient health and designing effective treatment plans.
Light to moderate physical activity initiates a series of interconnected responses in the body. The heart rate modestly increases in anticipation of the workout, followed by widespread vasodilation as oxygen consumption by skeletal muscles increases. This results in decreased peripheral resistance, increased capillary blood flow, and accelerated...
Light to moderate physical activity initiates a series of interconnected responses in the body. The heart rate modestly increases in anticipation of the workout, followed by widespread vasodilation as oxygen consumption by skeletal muscles increases. This results in decreased peripheral resistance, increased capillary blood flow, and accelerated...
787
01:25Correlation between ECG and Cardiac Cycle
4.5K
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...
4.5K
01:19Electrophysiology of Normal Cardiac Rhythm
3.4K
The normal cardiac rhythm is a synchronized electrical activity that facilitates the regular and coordinated contraction of the heart muscle. This process is essential for efficient blood circulation throughout the body. The fundamental elements involved in establishing and maintaining this rhythm include the unique electrical properties of cardiac muscle cells, the sinoatrial (SA) node's pacemaker function, the specialized conducting system, and the ionic mechanisms underlying each phase...
3.4K
01:30Cardiac Action Potential
1.3K
Cardiac action potentials are essential for proper heart function, enabling the rhythmic contractions needed for adequate blood circulation. Nodal cells and Purkinje fibers, specialized for electrical conduction, generate these action potentials.
The cardiac action potential process involves a series of phases characterized by the movement of ions across the cardiac cell membranes, leading to the depolarization and repolarization of the cardiac myocytes.
Ionic Basis of Cardiac Action Potentials
The cardiac action potential process involves a series of phases characterized by the movement of ions across the cardiac cell membranes, leading to the depolarization and repolarization of the cardiac myocytes.
Ionic Basis of Cardiac Action Potentials
1.3K