| PAPVR | partial anomalous pulmonary venous return |
|---|---|
| PASVR | pulmonary anomalous superior venous return |
| PTR | patellar tendon reflex; patient termination record; patient to return; peripheral total resistance; ... |
| REM | rapid eye movement; recent-event memory; reticular erythematous mucinosis; return electrode monitor;... |
| ROSC | return to spontaneous circulation |