| OTA | occupational therapy assistant; Office of Technology Assessment; ornithine transaminase; orthotoluid... |
|---|---|
| PDA | patent ductus arteriosus; personal digital assistant; posterior descending artery; pulmonary disease... |
| PTA | parallel tubular arrays; parathyroid adenoma; percutaneous transluminal angioplasty; peroxidase-labe... |
| PUA | patient unit assistant |
| RDA | recommended daily allowance; recommended dietary allowance; Registered Dental Assistant; right dorso... |