EKG Rhythm Strips 72

Identify the following rhythm strips.
1.

a.  1st degree AV block
b.  2nd degree AV block type I
c.  2nd degree AV block type II
d.  Complete heart block

2.

a.  Atrial paced
b.  Ventricular paced
c.  AV paced
d.  Biventricular paced
3.

a.  Sinus arrhythmia with a PAC and some junctional beats
b.  Sinus bradycardia with a PAC and an accelerated junctional dysrhythmia
c.  Normal sinus rhythm with a PAC and atrial ectopic beats
d.  Sinus tachycardia with an occasional PAC

4.

a.  Normal sinus rhythm with an occasional PAC
b.  Normal sinus rhythm with an occasional PJC
c.  Normal sinus rhythm with an occasional PVC
d.  Normal sinus rhythm with a sinus pause


5.

a.  Normal sinus rhythm with ventricular quadrigemeny
b.  Normal sinus rhythm with ventricular trigemeny
c.  Normal sinus rhythm with ventricular bigemeny
d.  Normal sinus rhythm with frequent sinus pauses

Answers
1.  b.  2nd degree AV block type I

2.  a.  Atrial paced
The rhythm is regular with a rate of 63/min.  The P waves are preceded by an atrial pacing stimulus.  No ectopic beats are seen.  PR:  .20 sec,  QRS:  12 sec,  QT:  .42 sec.


3.  c.  Normal sinus rhythm with a PAC and atrial ectopic beats

4.  c.  Normal sinus rhythm with an occasional PVC
The rhythm is slightly irregular.  The heart rate is 80/min.   There are upright P waves that have a corresponding QRS complex.  A single PVC is present.   PR:  .16 sec,  QRS:  .08 sec,  QT:  .36 sec.


5.  a.  Normal sinus rhythm with ventricular quadrigemeny
The rhythm is irregular due to the frequent PVCs.   The heart rate is 80/min.  P waves are present, upright, and precede the QRS complex.  Unifocal PVCs are seen every fourth beat.   The PVCs are followed by a compensatory pause.   PR:  .20 sec,  QRS:  .08 sec,  QT:  .40 sec.


Reviewed 3/8/16