| MPAP | mean pulmonary arterial pressure |
|---|---|
| MSAP | mean systemic arterial pressure |
| PA | panic attack; pantothenic acid; paralysis agitans; paranoia; passive aggressive; pathology; patient'... |
| Pa | pascal; pathologist, pathology; protactinium; Pseudomonas aeruginosa; pulmonary arterial [pressure] |
| PA | partial pressure of arterial fluid |