EKG Review

Front

What does the P wave on the ECG tracing represent?

Back

Depolarization of the atria

Front

Which wave is the first positive wave in a normal cardiac cycle?

Back

P wave

Front

Which wave represents ventricular repolarization?

Back

T wave

Front

Which wave should the nurse plan care based upon changes in the patient’s ventricular depolarization?

Back

QRS complex

Front

What does a nurse see on an electrocardiogram tracing if an electrical impulse originated in the sinoatrial node?

Back

A positive P wave before a QRS complex

Front

Where is the sinus node located in the heart?

Back

Right atrium

Front

A patient has a normal heartbeat of 72 beats per minute. What area of the conduction system should the nurse consider as functioning normally in this patient?

Back

Sinoatrial node

Front

How many times per minute should the sinoatrial node normally fire?

Back

60 to 100

Front

Which of the following complexes is not normally seen on an electrocardiogram tracing? P wave, QRS complex, T wave, U wave

Back

U wave

Front

Finish the following phrase: The electrodes are placed on _______ of the body to record heart activity from_______________________.

Back

10 areas, 12 angles and planes