How is the heart rate from a regular ECG tracing determined?

A) Count the number of ST segments in a 60-second strip
B) Multiply the number of QRS complexes in a 6-second strip by 10
C) Multiply the number of QRS complexes in a 10-second strip by 10
D) Count the P waves in a 20-second strip
E) Count the number of QRS complexes in a 30-second strip

Heart Rate

The number of times the heart beats per minute, a key indicator of heart health and physical condition.

ECG Tracing

The actual graphical output or representation of the heart's electrical activity as recorded during an ECG test.

ST Segments

Portions of the electrocardiogram that reflect a period between the heart's contraction and the beginning of its recharge for the next beat.