The ECG is the most important test for interpretation of the cardiac rhythm, conduction system abnormalities, and the detection of myocardial ischemia. The ECG is also of great value in the evaluation of other types of cardiac abnormalities including valvular heart disease, cardiomyopathy, pericarditis, and hypertensive disease.

Performance status: Definition: 0: Fully active; no performance restrictions. 1: Strenuous physical activity restricted; fully ambulatory and able to carry out light work.

2024年3月13日 · The electrocardiogram (ECG) is a graphical record of electric potentials generated by the working heart muscle fibers during each cardiac cycle.

The ECG is the most important test for interpretation of the cardiac rhythm, conduction system abnormalities, and the detection of myocardial ischemia. The ECG is also of great value in the evaluation of other types of cardiac abnormalities including valvular heart disease, cardiomyopathy, pericarditis, and hypertensive disease.

This topic provides a brief overview of exercise ECG testing including methodology, indications, and contraindications, and discusses the ECG manifestations of exercise-induced ischemia. A discussion on how to select the optimal cardiac stress test in …

2023年8月29日 · In patients with no known heart disease, PVCs have been seen in approximately 1 percent of routine 12-lead electrocardiograms (ECG) of 30 to 60 seconds duration and up to 6 percent of ECGs of two minutes duration .

2024年3月7日 · - ECG Mobitz type II second degree atrioventricular block - Variable AV block tutorial - Third degree or complete AV block with narrow QRS escape - Ventricular escape tutorial - Third-degree or complete AV block with wide QRS escape - Ventriculophasic block tutorial; RELATED TOPICS. Cardiac amyloidosis: Epidemiology, clinical manifestations ...

2024年11月21日 · After puberty in males, a QTc between 460 and 469 is borderline and ≥470 is considered prolonged. In post-pubertal females, 460 to 479 is borderline and ≥480 ms is considered prolonged. (See "Acquired long QT syndrome: Clinical manifestations, diagnosis, and management", section on 'ECG findings'.)

Calculator: QT interval correction (ECG) in adults and children; 相关专题. 先天性长QT综合征的诊断; 室内传导延迟的基础知识; 宽QRS波心动过速的诊断方法; 左前分支阻滞; 左后分支阻滞; 心电图教程：ST-T改变; 心电图教程：室性心律失常; 心电图教程：房性和房室结性(室上性 ...

The diagnosis of acute coronary-related ischemia depends upon the characteristics of the chest pain (if present), specific associated symptoms, abnormalities on electrocardiogram (ECG), and levels of serum markers of cardiac injury.