| PPFA | Planned Parenthood Federation of America |
|---|---|
| PVA | Paralyzed Veterans of America; peripheral venous alimentation; polyvinyl acetate; polyvinyl alcohol;... |
| RESNA | Rehabilitation Engineering Society of North America |
| RSNA | Radiological Society of North America |
| SCAA | Skin Care Association of America; sporadic cerebral amyloid angiopathy |