46岁男性，无家可归，在一个寒冷的夜晚，因“意识错乱”被紧急医疗技术人员（EMTs）送往急诊室就诊。在到达急诊室时，患者仍然处于意识错乱状态。体温为约30℃。急诊12导联心电图如图1所示。

These ECG voltage attenuations are of extracardiac mechanism, and impact the amplitude of QRS complexes, P-waves, and T-waves, occasionally resulting also in shortening of the QRS complex and QT ...

A combination of the Q wave, R wave and S wave, the “QRS complex” represents ventricular depolarization. This term can be confusing, as not all ECG leads contain all three of these waves ...

The most commonly used voltage criterion for LVH is the Sokolow-Lyon index. However, ECG QRS voltage may not be a reliable predictor of LVH. The limitation of the ECG in identifying ventricular ...

The intervals commonly measured on an ECG include the PR interval, QRS interval (also called QRS duration), QT interval and RR interval. Segment: The length between two specific points on an ECG ...

The goal of ECG interpretation in athletes is to classify the ECG as: (1) ‘normal’—no further evaluation needed or (2) ‘abnormal’—further evaluation needed. Normal ECGs include common, ...

The regular arrhythmia occurring at the beginning of the electrocardiogram was identified as ventricular bigeminy. Single ventricular premature complexes (VPCs), as well as pairs and triplets of ...

She returns for a follow-up visit for palpitations, and a 12-lead ECG is obtained. The rhythm is regular, at a rate of 150 beats/min. The QRS complex duration is normal (0.08 sec) with normal ...

A UNIVERSITY of Worcester study has found a new health link that could transform how heart disease is detected.