Free ECG Technician Certification Exam Question and Answers

Question 1

The waveforms in the middle are referred to as what?

Accepted Answer

Segment

Answer

Complex

Answer

Waveform

Answer

Interval

Question 2

The PR portion is what?

Accepted Answer

Depolarization of AV node and its delay and depolarization of Bundle of His and Bundle branches

Answer

Atrial repolarization

Answer

Ventricular depolarization

Answer

Atrial depolarization

Question 3

What do the tiny squares on the EKG paper's horizontal axis represent?

Accepted Answer

0.04 sec

Answer

5 sec

Answer

0.2 sec

Answer

0.1 sec

Question 4

What stands for the QRS complex?

Accepted Answer

The depolarization of ventricles

Answer

The depolarization of atria

Answer

AV depolarization

Answer

Septal depolarization

Question 5

What is the ideal breaths-to-compressions ratio during CPR?

Accepted Answer

2 breaths to 30 compressions

Answer

1 breath to 15 compressions

Answer

1 breath to 30 compressions

Question 6

The proper lead for the midaxillary line on the left side of the fifth intercostal gap is:

Accepted Answer

V6

Answer

V1

Answer

V3

Answer

V4

Question 7

What effects does the parasympathetic nervous system have on the heart, and which receptors are involved?

Accepted Answer

Dilation of arteries (cholinergic receptors)

Answer

Constriction of arteries (cholinergic receptors)

Answer

Dilation of arteries (alpha 1-adrenergic receptors)

Answer

Constriction of arteries (alpha 1-adrenergic receptors)

Question 8

The ST segment is what?

Accepted Answer

The pause between ventricular depolarization and ventricular repolarization

Answer

Atrial depolarization

Answer

Delay in the atrioventricular node

Answer

Ventricular depolarization

Question 9

When blood flow to the heart muscle is stopped or abruptly reduced for long enough to result in cell death, myocardial infarction occurs.

Accepted Answer

TRUE

Answer

FALSE

Question 10

What is the dominant ion inside cells?

Accepted Answer

Potassium

Answer

Magnesium

Answer

Sodium

Answer

None of these