Wednesday, January 28, 2015

Practice EKG Strips 397

Identify the following rhythms.

1.










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

2.











a. Demand Dual pacing
b. Demand ventricular pacing
c. Demand biventricular pacing
d. Demand atrial pacing

3.











a. Atrial paced
b. AV with biventricular pacing
c. Demand ventricular pacing
d. Ventricular paced

4.











a. Atrial paced with multifocal PVCs
b. Biventricular paced with demand atrial pacing and trigeminal PVCs
c. Atrial paced with demand biventricular pacing and PVCs
d. Demand AV pacing with PVCs

5.







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


Answers
1. a. Demand atrial pacing.  The rate is about 70 bpm. The QRS complexes are wide with an rSR complex in the V1 lead, RBBB.  No ectopic beats ares seen. The A-V interval is .24 sec.  QRS: .12 sec, QT: .44 sec
2. b. Demand ventricular pacing.  The rhythm is irregular with a rate of 70.  In lead V1 there are some unassociated P waves seen.  Maybe there is an underlying complete heart block.  
3. b. AV with biventricular pacing.  The A-V interval is .20 sec.  The V-A interval is around .64 sec.
4. b. Biventricular paced with demand atrial pacing and trigeminal PVCs
5. c. Biventricular pacing.   It looks like the underlying rhythm is atrial fibrillation

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