Practice EKG Strips 411

Identify the following rhythms.

1.

a. Sinus rhythm with sinus arrest
b. Sinus arrhythmia
c. Atrial fibrillation with slow ventricular response
d. Complete heart block

2.

a. Atrial paced
b. Dual paced
c. Biventricular paced
d. Ventricular paced

3.

a. First degree block
b. Sinus tachycardia
c. Sinus rhythm
d. Sinus arrhythmia

4.

a. Sinus rhythm with monofocal PVCs
b. Sinus rhythm with a triplet of PVCs
c. Sinus rhythm with trigeminal PVCs
d. Sinus rhythm with multifocal PVCs


5. What initial intervention is appropriate for this pulseless rhythm?

a. Transcutaneous pacing
b. Epinephrine 1 mg IV/IO q 3 - 5 minutes
c. Cardiopulmonary resuscitation
d. Atropine 0.5 mg IV/IO q3 - 5 minutes.

Answers
1.A. Sinus rhythm with sinus arrest. The rhythm is irregular. The rate is 40 bpm. There are positive P waves that are paired with QRS complexes. The QRS complexes are narrow. No ectopic beats are seen. Ther is ST-T wave depression. A 2.8 second period of sinus arrest follows the 3rd complex. PR: .16 sec, QRS: .08 sec, QT: .40 sec

2.C. Biventricular pacing. The rhythm is regular. The rate is 71 bpm. No P waves are seen. The intrinsic rhythm looks like atrial fibrillation. There are biventricular pacer spikes before each QRS complex. No ectopic beats are seen. PR: ---, QRS: .16 sec, QT: .44 sec.

3. C. Sinus rhythm. Rate 93 bpm Rhythm: regular. P waves are seen with each QRS complex. The QRS complexes are narrow. No ectopic beats are seen. PR: .16 sec, QRS: .08 sec, QT: .38 sec

4. c. Sinus rhythm with trigeminal PVCs. The rhythm is irregular due to the PVCs. There are upright P waves associated with QRS complexes. Unifocal PVCs are seen every third beat, trigeminy. PR: .16 sec, QRS: .12 sec, QT: .40 sec.

5. c. Cardiopulmonary resuscitation.