ECG Review

What is the heart rate?

The pacemaker of the heart is the

• AV node

• SA node

• Purkinje fibers

• Bundle branches

The number of lead recordings on an ECG tracing is

The normal paper speed during an ECG is

• 10 mm/sec

• 15 mm/sec

• 20 mm/sec

• 25 mm/sec

___represents atrial depolarization.

The condition where the heart is on the right side of the body rather than the left.

• dextrosis

• cardiodextrosis

• dextrocardia

• sinistrocardia

The vertical lines on the ECG paper measure the amplitude or voltage of the waves. T/F

The horizontal lines on the ECG paper measure the time. T/F

When the paper speed is set at the normal setting, each small box is equal to __ seconds.

• 0.02

• 0.04

• 0.2

• 0.4

Depolarization means

• contracting

• relaxing

• no movement