How many leads does a multichannel EKG record at the same time?

A multichannel EKG, often referred to as a 12-lead EKG, records electrical activity of the heart through 12 different leads simultaneously. Each lead provides a different perspective of the heart’s electrical activity, allowing for comprehensive analysis. These leads consist of 6 limb leads (I, II, III, aVR, aVL, aVF) and 6 precordial leads (V1 to V6).

This configuration is pivotal in diagnosing a variety of cardiac conditions, including arrhythmias, ischemia, and structural abnormalities. The simultaneous recording from these 12 perspectives enhances the ability of healthcare professionals to interpret the heart's function effectively.

In comparison, other options like 6, 10, or 15 leads do not reflect the standard multichannel EKG configuration typically used in clinical settings, confirming that the correct number of leads in a standard multichannel EKG is indeed 12.