This electrical activity initiates the heart’s muscular contraction that pumps the blood to the body. The activity is usually picked up by electrodes placed in the patient’s skin.
The electrodes on the skin pick up a wave of activity or depolarization moving along each cell, within the heart.
The ECG actually recording plots voltage on its vertical axis against time on its horizontal axis. Measurements along the horizontal axis indicate the overall heart rate, regularity and the time intervals during electrical activation that moves from one part of the to another.
By study the ECG, it will show the:
*Heart rate
*Rhythm of heart
*Information about chambers of heart
*Blood supply to cardiac muscle
*Pericardial disease
*Conduction defects
Many cardiac abnormalities can be detected by ECG interpretation, including enlargement of heart muscle, electrical condition blocks, insufficient blood flow and death of heart muscle due to a coronary thrombosis.
What is an ECG?
