Basics of Electrocardiogram (ECG) and Its Application in Diagnosis of Heart Ailments: An Educational Series

Abstract

Electrocardiogram (ECG) is a record of electrical activity of the heart. PQRST waves represent the electrical activities of atria and ventricles. A complete three-dimensional electrical activity is possible to be recorded using a 12-lead ECG. The normal and different routinely-met clinical ECG are elaborated and discussed. This routine, normal and abnormal ECG, like arrhythmias and heart block records as well as their clinical notes shall be educational information for the medical students.