Practice EKG Strips 389

Identify the following rhythms.

1.

a. Sinus tachycardia
b. Supraventricular tachycardia
c. Ventricular tachycardia
d. Junctional tachycardia

2.

a. NSR with sinus arrest
b. Sinus arrhythmia
c. Complete heart block
d. Mobitz II

3.

a. Sinus bradycardia with 1st degree block
b. Junctional rhythm with 1st degree block
c. Complete heart block with 1st degree block
d. Normal sinus rhythm with 1st degree block

4.

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

5.

a. Normal sinus rhythm
b. Accelerated idioventricular rhythm
c. Accelerated junctional
d. Atrial fibrillation with controlled ventricular response

Answers

1.  b. Supraventricular tachycardia.  The rate is fast so the P waves may be buried in the T waves or not be present at all. So we cannot say with certainty that it is either answer A or D. We KNOW that the QRS complex is narrow so the rhythm is coming from above ventricles so it cannot be C. The T waves may look tall and tented, you would have to wonder about a moderate hyperkalemia. The T waves could also be called hyperacute, which is often an early indicator of myocardial ischemia.

2.  a. NSR with sinus arrest with a 3.2 second of ventricular inactivity (no cardiac output).

3.  a. Sinus bradycardia with 1st degree block. The heart rate is around 50 bpm. The PR interval is .26 sec

4.  c. Agonal rhythm

5. c. Accelerated junctional.  Inverted P waves that precede each QRS complex. The rate is around 88 bpm. The range for an accelerated junctional rhythm is 60 - 100 bpm