| VVI | ventricular inhibited [pacemaker]; vocal velocity index |
|---|---|
| VVT | ventricular triggered [pacemaker] |
| WAP | wandering atrial pacemaker |
| AI | 1) Artificial Insemination 2) Aortic Insufficience(= -cy)(= Incompetence)... |
| ACAC | acetyl-coenzyme A cocarboxylase; activated charcoal artificial cell |