EKG Rhythm Strip Quiz 41

Identify the following rhythm strips
1.


a. 3rd degree heart block
b. Slow ventricular tachycardia
c. Agonal rhythm
d. Junctional rhythm


2.


a. Complete heart block
b. Junctional rhythm
c. Agonal rhythm
d. Atrial fibrillation with slow ventricular response



3.


a. Normal sinus rhythm with 1st degree AV block
b. Atrial fibrillation with slow ventricular response
c. Accelerated junctional rhythm
d. Idioventricular rhythm



4.






a. Normal sinus rhythm with consecutive PACsb. Sinus arrhythmia
c. Atrial fibrillation
d. Junctional rhythm with retrograde P waves


5.


a. Sinus bradycardia
b. Junctional rhythm
c. Agonal rhythm
d. Atrial fibrillation with slow ventricular response


6.


a. Normal sinus rhythm with 1st degree block
b. Sinus bradycardia
c. Atrial flutter
d. 2nd degree heart block type II


7.


a. Sinus rhythm with an frequent PVCs
b. Sinus arrhythmia
c. Sinus rhythm with a bigeminal PACs
d. Sinus rhythm with premature junctional contractions



8.






a. Atrial flutter
b. 2nd degree heart block type II
c. Atrial fibrillation with slow ventricular response
d. Sinus tachycardia with sinus pauses


9.


a. Atrial paced with multifocal PVCs
b. Ventricular paced with an occasional PAC
c. AV pacing with a unifocal PJC
d. Biventricular pacing with an occasional PVC


10.





a. Sinus rhythm with a unifocal couplet
b. Sinus arrhythmia with unifocal PVCs
c. Sinus rhythm with a multifocal PACs
d. Sinus rhythm with a multifocal couplet



Answers

1.
c. Agonal rhythm.   Slow wide rhythm with rate < 20 bpm.


2.
a. Complete heart block.    The P waves and the QRS complexes are disassociated.   P-P interval is regular.   R-R interval is also regular but occurring at a slower rate.

3.

d. Idioventricular rhythm.   Usually has a regular rhythm with wide, bizarre shaped QRS complexes .  Rate usually falls between 20-40 beats per minute.  P waves are absent.

4.

a. Normal sinus rhythm with consecutive PACs.  Definite changes in the R-R intervals so this might be interpreted as sinus arrhythmia.   But the morphology of the ectopic P waves is different from the other sinus P waves so this leads me to believe that there is an ectopic site involved.


5.






a. Bradycardia with sinus arrhythmia.   Slightly irregular rhythm with rate less than 60 beats per minute.  There is > 0.12 sec variation between the longest and shortest R-R interval.

6.

d. 2nd degree heart block type II.   2:1 block.   PR interval is the same on conducted beats.  P-P interval is regular.   R-R interval is also regular.  How would you differentiate this rhythm from a sinus rhythm with a U wave present?   In general, with a Mobitz type II block the P-P interval would be the same.  On a sinus rhythm with a U wave, there would be some variation in the P-U distance on one complex and the U-P distance of the next complex.

7.

c. Sinus rhythm with a bigeminal PACs.   Atrial ectopic beats every other beat.  The difference in the height of the T waves on the paired beats leads me to believe that these are PACs instead of PJCs.


8.

a. Atrial flutter.   F (flutter) waves are present.

9.

d. Biventricular pacing with an occasional PVC.   Two pacer spikes are present, one for each ventricle.


10.





d. Sinus rhythm with a multifocal couplet.   There are a pair of two PVCs of varying morphology.  A compensatory pause follows the 2nd PVC.


Reviewed 6/4/13, 3/6/16

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