Which term is a test that records the heart's electrical activity?

Which term is a test that records the heart's electrical activity?

• A. ELECTROCARDIOGRAM
• B. ARRHYTHMIA
• C. DYSRHYTHMIA
• D. PHLEBOTOMIST

Answer: (A)

An electrocardiogram is the test that records the heart’s electrical activity. It uses multiple leads placed on the chest and limbs to detect the tiny electrical impulses the heart generates with every beat. The resulting tracing shows the timing and sequence of heart activity, with waves representing different phases of the heartbeat (like atrial and ventricular depolarization and repolarization). By examining the pattern and intervals on the trace, clinicians can assess rhythm regularity, identify arrhythmias, and look for signs of past heart injury or reduced blood flow. The other terms refer to abnormal heart rhythms themselves or to a healthcare worker who draws blood, not a test that records electrical activity.

An electrocardiogram is the test that records the heart’s electrical activity. It uses multiple leads placed on the chest and limbs to detect the tiny electrical impulses the heart generates with every beat. The resulting tracing shows the timing and sequence of heart activity, with waves representing different phases of the heartbeat (like atrial and ventricular depolarization and repolarization). By examining the pattern and intervals on the trace, clinicians can assess rhythm regularity, identify arrhythmias, and look for signs of past heart injury or reduced blood flow. The other terms refer to abnormal heart rhythms themselves or to a healthcare worker who draws blood, not a test that records electrical activity.