Practice EKG Rhythm Strips 213

Identify the following rhythms.

1.














2.


3.


4.

5.














Answers


1.
Atrial fibrillation with a PVC

The rhythm is irregular with a rate of 60/min.   No P waves are present.   Fibrillation and flutter waves are present between the QRS complexes.  The 5th complex is a PVC.  There is some ST depression in  lead II.  PR:  ---,  QRS:  .08 sec,  QT:  .36 sec.   Interpretation:  Atrial fibrillation with a PVC


2.

The rhythm is regular.   The heart rate is 48/min.  No P waves are seen.  The QRS complex is wide suggesting a ventricular origin for this rhythm.  No ectopic beats are noted.  PR:  ---,  QRS:  .12 sec,  QT:  .36 sec.  Interpretation:  Accelerated idioventricular rhythm.


3.
NSR with a PVC triplet













The rhythm is irregular due to the PVCs.   The rate is 90/min.  There are upright, uniform P waves present before each sinus beat.   A PVC triplet is present.  PR:  .16 sec,  QRS:  .08 sec,  QT:  .36 sec.  Interpretation:  NSR with a PVC triplet


4.
Normal sinus rhythm with trigeminal PVCs
 The rhythm is irregular.   The rate is 60/min.   There are uniform, upright P waves present.    A PVC is present every third beat, trigeminy.  PR:  .20 sec,  QRS:  .10 sec,  QT: .36 sec.   Interpretation:  Normal sinus rhythm with trigeminal PVCs



5.
Ventricular paced








The rhythm is regular.  The heart rate is 68/min.   The P waves are associated with a QRS complex and are positive and uniform.   A ventricular pacer spike precedes each QRS complex.  PR:  .20 sec,  QRS:  .20 sec,  QT:  .48 sec.  Interpretation:  Ventricular paced

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