EKG Rhythm Strips 89

Identify the following rhythms
1.






2.

3.

4.

5.







Answers
1.  Atrial fibrillation with couplets
The rhythm is irregular with a rate of 80/min.   No P waves are present but fibrillatory activity can be seen betweeen the QRS complexes.  There are multifocal PVCs present, some in couplets.  PR: ---,  QRS:  .10 sec,  QT:  .36 sec.

2.  Bradycardia with 1st degree block.
The rate is 56/min.   The rhythm is regular.   There are upright, uniform P waves before each QRS complex.  No ectopic beats are present.  PR:  0.28 sec,  QRS:  .08 sec,  QT:  .42 sec.

3.  NSR with PACs.









The rhythm is irregular due to atrial ectopy.   The rate is  90/min.   There are upright P waves befoe each QRS complex.  Also, there is a small nonconducted P wave after the first PAC.   Premature atrial complexes are present.  PR:  .16 sec,  QRS:  .08 sec,  QT:  .40 sec.

4.  NSR with unifocal PVCs (trigeminy)
The rhythm is irregular due to the ectopic beats.   The rate is 70/min.   The P waves are positive and are associated with a QRS complex.   Premature ventricular complexes occur every 3rd beat.  PR:  .20 sec,  QRS:  .08 sec,  QT:  .36 sec.

5.  NSR with unifocal PVCs (trigeminy)
The rhythm is irregular due to the ectopic beats.   The rate is 60/min.   The P waves are positive and are associated with a QRS complex.   Unifocal PVCs occur in a trigeminal pattern.  PR:  .20 sec,  QRS:  .08 sec,  QT:  .44 sec.


Reviewed 3/9/16

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