EKG certification Certification FREE EKG Technician Certification Question and Answers 2

Question 1

Which lead placement corresponds to the V4 precordial lead position?

Accepted Answer

Fifth intercostal space, midclavicular line

Answer

Fourth intercostal space, right sternal border

Answer

Fifth intercostal space, anterior axillary line

Answer

Fourth intercostal space, left sternal border

Question 2

What does a prolonged QT interval on an EKG most commonly indicate?

Accepted Answer

Increased risk of ventricular arrhythmias

Answer

Left atrial enlargement

Answer

Right bundle branch block

Answer

Pericardial effusion

Question 3

An EKG technician notices significant baseline wander on the tracing. What is the most likely cause?

Accepted Answer

Patient movement or respiratory artifact

Answer

Electrical interference from nearby equipment

Answer

Dried-out electrode gel

Answer

Incorrect calibration of the machine

Question 4

In a 12-lead EKG, which leads are considered the inferior leads?

Accepted Answer

II, III, aVF

Answer

I, aVL, V5, V6

Answer

V1, V2, V3, V4

Answer

aVR, V1, V2

Question 5

What is the normal duration of the PR interval in an adult patient?

Accepted Answer

0.12 to 0.20 seconds

Answer

0.06 to 0.10 seconds

Answer

0.22 to 0.30 seconds

Answer

0.32 to 0.40 seconds

Question 6

Which EKG finding is most characteristic of atrial fibrillation?

Accepted Answer

Irregularly irregular rhythm with absent P waves

Answer

Regular rhythm with sawtooth-shaped flutter waves

Answer

Wide QRS complexes occurring at a regular rate

Answer

Tall peaked T waves with shortened QT interval