Practice EKG Strips 413

Identify the following rhythms.

1.

a. Accelerated junctional rhythm
b. Accelerated idioventricular rhythm
c. First degree heart block
d. Normal sinus rhythm

2.

a. Ventricular tachycardia
b. Ventricular fibrillation
c. Polymorphic ventricular tachycardia
d. Accelerated idioventricular rhythm

3.

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

4.

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

5.

a. Demand atrial pacing
b. Demand AV pacing
c. Demand biventricular pacing
d. Demand ventricular pacing

Answers
1. a. Accelerated junctional rhythm. The rhythm is regular. The rate is 65 bpm. No P waves are seen. The QRS complexes are narrow. No ectopic beats are seen. PR: ---, QRS: .08 sec, QT: .52 sec

2. a. Ventricular tachycardia. The QRS complexes are fairly uniform

3. b. Ventricular fibrillation. The QRS complexes are too disorganized to be answers A, C, or D. The definitive treatment for this rhythm is defibrillation.

4. b. Complete heart block. The rhythm is slightly irregular. The P waves and the QRS complexes are not paired together. The atrial rate is 100 bpm while the ventricular rate is 35 bpm.

5.  b. Demand AV pacing. Looks like 100% ventricular paced with demand atrial pacing. It looks like the ventricular - atrial (V - A) interval, the period of time between the ventricular initiated beat and the atrial initiated beat is about .84 sec. Note the difference between the R - R interval of the complexes with the native beats and the R - R interval of the complexes with the dual paced beats