What is lead v3?

Lead V3 is one of the twelve leads used in an electrocardiogram (ECG) to measure and record the electrical activity of the heart. It is one of the precordial leads that is placed on the chest wall to detect the electrical activity in the heart's anterior wall.

In Lead V3, the positive electrode is placed on the left side of the chest, between the second and third intercostal space, while the negative electrode is placed on the right side of the chest, just below the clavicle.

The electrical signals recorded in Lead V3 represent the activity on the anterior wall of the left ventricle, which is responsible for pumping oxygenated blood to the body. Abnormalities in lead V3 can indicate various cardiac conditions such as myocardial infarction, bundle branch block, and hypertrophy of the left ventricle.

Interpretation of the ECG waveforms in lead V3 requires knowledge of the normal waveform patterns and their variations. Healthcare professionals typically use the ECG reading of the lead V3 along with other leads to make a diagnosis and determine the appropriate treatment.