Practice EKG Rhythm Strips 184

Identify the following rhythms.


1.


2.


3.


4.


5.












Answers


1.
Normal sinus rhythm with unifocal PVCs










The rhythm is irregular with premature ventricular contractions.  The rate is 80/min.  The P waves are upright and are paired with a QRS complex.  The PR interval is prolonged.  Two unifocal PVCs are present.  A compensatory pause follows each PVC.  PR: .24 sec,  QRS:  .08 sec,  QT:  .40 sec.


2.
Idioventricular rhythm













The rhythm is irregular with a rate of 40/min.   No P waves are present.   The QRS complexes are wide and poorly organized.   PR:  ---,   QRS:  .44 sec,  QT:  .88 sec


3.
Atrial flutter with a pair of three beat runs of ventricular tachycardia














The rhythm is irregular.   No P waves are seen but there are flutter waves present.   There are two 3 beat runs of ventricular tachycardia present.   The complexes appear monomorphic.    PR:  ---,  QRS:  .10 sec,  QT:  .32 sec.


4.
Atrial flutter











The rhythm is regular with a rate of 56/min.   Flutter waves are present between each QRS complex in a 3:1 ratio.   No ectopic beats are present.   PR:  ---,  QRS:  .08 sec,  QT:  ---


5.
Junctional tachycardia









The rhythm is regular with a rate of 115/min.   There are negative P waves which precede each QRS complex.   No ectopic beats are present.   PR:  .12 sec,  QRS:  .08 sec,  QT:  .32 sec.

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