Practice EKG Strips 393

Identify the following rhythms.

1.

a. Atria flutter
b. Atrial paced
c. Atrial fibrillation
d. Wandering atrial pacemaker

2.

a. 2nd degree heart block type I
b. 3rd degree block
c. Idioventricular rhythm
d. Junctional rhythm


3.

a. Sinus arrhythmia
b. Sinus arrest
c. 1st degree block with a pause
d. Atrial fibrillation

4.

a. Atrial fibrillation
b. Sinus arrhythmia
c. NSR with PACs
d. Mobitz I

5.  What is the post shock rhythm?

a. Ventricular fibrillation
b. Ventricular tachycardia
c. Polymorphic ventricular tachycardia
d. Torsades de pointes

Answers
1. a. Atria flutter. An irregular atrial flutter. Sometimes you will hear it referred to as atrial flutter with variable ventricular response. The strip has a bigeminal pattern to it. Every other beat there is one flutter wave for every QRS complex.
2. b. 3rd degree block. The P waves and the QRS complexes are NOT paired up. The atrial rate is around 68 bpm. The ventricular rate is about 53 bpm.
3. c. 1st degree block with a pause. The rhythm is irregular due to the pause. The P waves have a corresponding QRS complex. The PR interval is prolonged. The QRS complexes are narrow and there is some ST-T wave depression. There is a 1.28 second pause present. PR: .22 sec, QRS: .08 sec, QT: 40 sec.
4. c. NSR with PACs. The rhythm is irregular with a rate of 70 bpm. There are upright P waves before each QRS complex. The QRS complexes are narrow. PACs are seen (beats 3, 6, and 9) every third beat, atrial trigeminy. The P wave of the PAC has a different shape from the sinus P waves. PR: .12 sec, QRS: .08 sec, QT: .44 sec.
5. a. Ventricular fibrillation