Practice EKG Strips 369

Identify the following rhythms.

1.

a. Atrial fibrillation
b. 2nd degree heart block type II
c. Complete heart block
d. Sinus rhythm with blocked PACs

2.

a. Atrial fibrillation
b. Atrial flutter
c. Junctional rhythm
d. Idioventricular rhythm

3.

a. Normal sinus rhythm
b. Atrial fibrillation
c. Atrial flutter
d. Sinus tachycardia

4.

a. Atrial fibrillation
b. Atrial flutter
c. Atrial tachycardia
d. Atrial paced

5.

a. Junctional rhythm
b. Complete heart block
c. First degree heart block
d. Sinus bradycardia


Answers
1. b. 2nd degree heart block type II. There are some nonconducted P waves present. On the conducted beats the PR interval is the same. This points toward a type II block
2. a. Atrial fibrillation. The rhythm is irregular with an absence of P waves. Some fibrillation is seen between the QRS complexes.
3.c. Atrial flutter. 3:1 flutter waves to QRS complexes
4. d. Atrial paced. An atrial pacer spike precedes the small P waves.
5. d. Sinus bradycardia. The rhythm is regular with a rate of 51 bpm. The P waves are upright and uniform. No ectopic beats are noted. There is ST depression in the V1 lead which might suggest anterior ischemia.