Float Nurse

We recently had a patient with an AV pacemaker that appeared to have periods of failure to pace. The pacemaker representative evaluated the rhythm and said that the pacemaker appeared to be set in the "MVP" mode.  The MVP mode works in the manner describe in this diagram      

Demand ventricular pacing.  The P waves are seen better in lead I.  The underlying rhythm looks like a second degree type I.   

There is also ST depression and T wave inversion in the inferior leads, II, III, aVF.  

1. Demand ventricular paced 2. Demand ventricular paced 3. Demand atrial pacing 4. Demand ventricular paced 5. Demand ventricular paced 6. Demand atrial pacing 7. Demand atrial pacing 8. Demand atrial pacing 9. Demand ventricular pacing 10. Demand atrial pacing For additional Practice