Ecg Sections Of The Heart

This section describes the basic components of the ecg and the lead system used to record the ecg tracings.

Ecg sections of the heart. These electrodes detect the small electrical changes that are a consequence of cardiac muscle depolarization followed by repolarization during each cardiac cycle heartbeat. The ecg tracing can also provide information about whether the heart muscle cells are conducting electricity appropriately. Electrodes are placed on different parts of a patient s limbs and chest to record the electrical activity.

Electrocardiography is the process of producing an electrocardiogram ecg or ekg it is a graph of voltage versus time of the electrical activity of the heart using electrodes placed on the skin. Ecg is the abbreviated term for an electrocardiogram. The normal ecg a normal ecg contains waves intervals segments and one complex as defined below.

The different parts of the ecg will be described in the following sections. By analyzing the shape of the electrical waves a radiologist may be able to determine if there is decreased blood flow to parts of the heart muscle.