EKG certification Certification FREE EKG Certification General Question and Answers 3

Question 1

In a 12-lead EKG, which leads view the lateral wall of the heart?

Accepted Answer

I, aVL, V5, V6

Answer

II, III, aVF

Answer

V1, V2

Answer

V3, V4

Question 2

What is the significance of a QRS complex duration greater than 0.12 seconds?

Accepted Answer

Possible bundle branch block

Answer

Normal ventricular conduction

Answer

First-degree AV block

Answer

Atrial enlargement

Question 3

How many small boxes on standard EKG paper equal 1 millivolt of amplitude?

Accepted Answer

10 small boxes

Answer

5 small boxes

Answer

15 small boxes

Answer

20 small boxes

Question 4

Which EKG finding is characteristic of atrial fibrillation?

Accepted Answer

Irregularly irregular R-R intervals with absent P waves

Answer

Sawtooth P waves

Answer

Prolonged QT interval

Answer

Delta waves before the QRS

Question 5

Where should the V4 precordial lead be placed on the patient's chest?

Accepted Answer

Left midclavicular line, 5th intercostal space

Answer

Right sternal border, 4th intercostal space

Answer

Left sternal border, 4th intercostal space

Answer

Left anterior axillary line, 5th intercostal space

Question 6

What does a tall, peaked T wave on an EKG most commonly indicate?

Accepted Answer

Hyperkalemia

Answer

Hypokalemia

Answer

Acute pericarditis

Answer

Left ventricular hypertrophy