ECG Technican Review EC

This structure of the conduction system is known as the pacemaker.

• AV node

• Bundle of HIS

• SA node

• Purkinje fibers

This structure is responsible for the contraction of the ventricle muscles.

• SA node

• Purkinje fibers

• Bundle of HIS

• AV node

This is the abbreviation for electrocardiogram.

• ECK

• EKG

• EEG

• ECG

This is the record of ventricular depolarization (AV node, Bundle of HIS & Purkinje fibers).

• P wave

• PR segment

• QRS complex

• T wave

This is the record of ventricular repolarization.

• T wave

• P wave

• ST segment

• QRS complex

The nurse is assessing the client’s electrocardiography (ECG). What does the P wave on the ECG tracing represent?

• Contraction of the atria

• Contraction of the ventricles

• Depolarization of the atria

• Depolarization of the ventricles

A patient is experiencing electrocardiogram changes. Which wave should the nurse recognize as representing ventricular repolarization?

• Q wave

• R wave

• S wave

• T wave

A patient is admitted for diagnosis of an electrocardiogram abnormality. Which wave should the nurse plan care based upon changes in the patient’s ventricular depolarization?

• P wave

• QRS complex

• U wave

• T wave

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?

• Bundle of His

• Sinoatrial node

• Purkinje’s fibers

• Atrioventricular node

The nurse is determining the functioning of a patient’s sinoatrial node. How many times per minute should the nurse expect the node to normally fire?

• 20 to 40

• 25 to 55

• 40 to 85

• 60 to 100