| AVR | accelerated ventricular rhythm; antiviral regulator; aortic valve replacement |
|---|---|
| DIR | double isomorphous replacement |
| DRF | Daily Rating Form; daily replacement factor; Deafness Research Foundation; dose reduction factor |
| DVR | digital vascular reactivity; Doctor of Veterinary Radiology; double valve replacement; double ventri... |
| EARR | extended aortic root replacement |