ECG Rhythm Analysis

Question 1

What is the normal heart rate range for adults at rest?

Accepted Answer

60-100 beats per minute

Answer

40-60 beats per minute

Answer

100-120 beats per minute

Answer

120-150 beats per minute

Question 2

What defines ventricular tachycardia on an ECG?

Accepted Answer

Wide QRS complexes at a rate greater than 100 bpm

Answer

Narrow QRS complexes with irregular rhythm

Answer

Absent P waves with normal QRS

Answer

Saw-tooth baseline pattern

Question 3

What is first-degree AV block characterized by?

Accepted Answer

PR interval greater than 0.20 seconds with all P waves conducted

Answer

Dropped QRS complexes

Answer

Complete dissociation of P waves and QRS

Answer

Irregular ventricular rhythm

Question 4

How do you calculate heart rate from an ECG strip using the 300 method?

Accepted Answer

Divide 300 by the number of large boxes between two R waves

Answer

Count the number of QRS complexes in 6 seconds

Answer

Multiply the P-P interval by 60

Answer

Count small boxes between R waves and divide by 5

Question 5

What rhythm shows a saw-tooth pattern on the ECG?

Accepted Answer

Atrial flutter

Answer

Atrial fibrillation

Answer

Ventricular fibrillation

Answer

Sinus tachycardia

Question 6

What is the treatment for pulseless ventricular fibrillation?

Accepted Answer

Immediate defibrillation

Answer

Adenosine IV push

Answer

Atropine IV

Answer

Synchronized cardioversion