CCMA EKG Administration 2

Question 1

What does the P wave on an ECG represent?

Accepted Answer

Atrial depolarization

Answer

Ventricular depolarization

Answer

Ventricular repolarization

Answer

Atrial repolarization

Question 2

A heart rate of 52 beats per minute would be classified as:

Accepted Answer

Bradycardia

Answer

Tachycardia

Answer

Normal sinus rhythm

Answer

Atrial fibrillation

Question 3

Which artifact on an ECG is caused by the patient's muscle movement or shivering?

Accepted Answer

Somatic muscle artifact

Answer

Baseline wander

Answer

60-cycle (AC) interference

Answer

Lead reversal artifact

Question 4

On ECG graph paper, what does each small square represent in time?

Accepted Answer

0.04 seconds

Answer

0.10 seconds

Answer

0.20 seconds

Answer

0.40 seconds

Question 5

Before applying ECG electrodes, the medical assistant should prepare the patient's skin by:

Accepted Answer

Cleaning the skin with alcohol, drying it, and clipping chest hair if necessary

Answer

Applying a thick layer of electrode gel directly to unwashed skin

Answer

Using acetone to strip all oils from the skin

Answer

Applying lotion to improve electrode adhesion

Question 6

In a normal ECG, what does the QRS complex represent?

Accepted Answer

Ventricular depolarization

Answer

Atrial repolarization

Answer

Atrial depolarization

Answer

Ventricular repolarization