| PSR | pain sensitivity range; perspective surface rendering; portal systemic resistance; proliferative sic... |
|---|---|
| PTR | patellar tendon reflex; patient termination record; patient to return; peripheral total resistance; ... |
| PVRI | pulmonary vascular resistance index |
| R&C | resistance and capacitance |
| RD | radial deviation; radiology department; rate difference; Raynaud disease; reaction of degeneration; ... |