Practice EKG Rhythm Strips 105

Identify the following rhythms.

1.

2.

3.

4.

5.

Answers


1.

3rd degree AV block

The rhythm is irregular with complete AV dissociation.   The atrial rate is 70/min and the ventricular rate is 40/min.   The P waves are upright but are note associated with a QRS complex.  The QRS complexes are narrow suggesting a junctional focus.  PR:  ---,  QRS:  .06 sec,  QT:  .48 sec.


2.

Atrial paced

The rhythm is regular with a rate of 57/min.  Small upright P waves are present and they are preceded by an atrial pacer spike.  The PR interval is prolonged.  No ectopic beats are noted.  PR:  .28 sec,  QRS:  .08 sec,  QT:  .40 sec.


3.

1st degree AV block

The rhythm is regular with a rate of 63/min.  P waves are positive and correspond to a QRS complex.  The PR interval is prolonged.  PR:  .28 sec,  QTS:  .08 sec,  QT:  .40 sec.


4.

Atrial flutter with variable rate

The rhythm is irregular with a rate of 80/min.   No P waves are seen only flutter waves.  No ectopic beats are noted.  There is variable conduction between the atria and the ventricles,  3:1,  2:1.   PR:  ---,  QRS:  .08 sec,  QT:  .24 sec


5.

Ventricular tachycardia

The rhythm is regular with a rate of 182.   No P waves are seen.  Monomorphic QRS complexes are present.