AAMA AAMA Electrocardiography and Diagnostic Testing 1

Question 1

How many electrodes are placed on a patient for a standard 12-lead ECG?

Accepted Answer

10 electrodes

Answer

12 electrodes

Answer

4 electrodes

Answer

6 electrodes

Question 2

Which ECG wave represents ventricular depolarization?

Accepted Answer

QRS complex

Answer

P wave

Answer

T wave

Answer

U wave

Question 3

What artifact on an ECG is caused by patient movement or shivering?

Accepted Answer

Somatic tremor artifact

Answer

AC interference

Answer

Baseline drift

Answer

Wandering baseline

Question 4

The PR interval on an ECG represents:

Accepted Answer

The time for an impulse to travel from the SA node through the AV node

Answer

Ventricular repolarization

Answer

The time for ventricular depolarization

Answer

Atrial repolarization only

Question 5

Which precordial lead is placed at the fourth intercostal space, right sternal border?

Accepted Answer

V1

Answer

V2

Answer

V3

Answer

V4

Question 6

Normal sinus rhythm on an ECG is characterized by a rate of:

Accepted Answer

60–100 beats per minute

Answer

40–60 beats per minute

Answer

100–150 beats per minute

Answer

Less than 40 beats per minute