Practice EKG Strips 409

Identify the following rhythms.

1.

a. Sinus arrhythmia
b. 2nd degree heart block type II
c. 2nd degree heart block type I
d. NSR with PACs

2.

a. Junctional rhythm
b. Complete heart block
c. Idioventricular rhythm
d. Ventricular standstill

3.

a. Sinus tachycardia
b. Multifocal atrial tachycardia
c. Ventricular tachycardia
d. Supraventricular tachycardia

4.

a. Adenosine 6 mg IV
b. Atenolol 2.5 mg IV
c. Amiodarone 150 mg IV
d. Atropine 0.5 mg IV

5.

a. Atrial pacing
b. AV pacing with biventricular pacing
c. Biventricular pacing
d. Ventricular pacing

Answers
1. c. 2nd degree heart block type I. The rhythm is irregular. The rate is 70 bpm. Ther are upright P waves present. The PR interval increases over successive beats. A dropped or nonconducted P wave is seen after the 1st, 3rd, 5th, and 7th beats. The QRS complexes looked like they are group in pairs. This is a characteristic that is particular to a type I block.

2. c. Idioventricular rhythm. The rhythm is irregular with a rate of 30 bpm. No P waves are seen. The QRS complexes are wide and bizarre looking. So the absence of P waves and a wide QRS complexes point toward a ventricular initiated rhythm.

3. a. Sinus tachycardia. The rate is 150 bpm and the rhythm is regular. There are upright P waves associated with the QRS complexes. The QRS complexes are narrow. No ectopic beats are seen. PR: .12 sec, QRS: .08 sec, QT: .24 sec.

4. d. Atropine 0.5 mg IV

5.  b. AV pacing with biventricular pacing