What test measures the electrical activity of the heart over a period of time using electrodes placed on the skin?
Show answer
Electrocardiogram (ECG)
An ECG (or EKG) works by placing electrodes on the skin to detect the tiny electrical impulses that trigger each heartbeat. Doctors look at the specific peaks and valleys on the graph, known as the P, QRS, and T waves, to ensure the heart's rhythm is healthy.
Also asked as:
- What medical test uses skin electrodes to record the heart's electrical activity over time?