| P |
para |
| PA |
posteroanterior |
| PAC |
premature atrial contraction |
| PAO2 |
alveolar oxygen |
| PaO2 |
peripheral arterial oxygen content |
| PAP |
pulmonary artery pressure |
| PAT |
paroxysymal atrial tachycardia |
| P&PD |
percussion and postural drainage |
| PC |
after eating |
| PCWP |
pulmonary capillary wedge pressure |
| PDA |
patent ductus arteriosus |
| PDR |
physicians desk reference |
| PE |
pulmonary embolus, or physical exam or pleural effusion |
| PEEP |
positive end expiratory pressure |
| PFT |
pulmonary function tests |
| pg |
picogram |
| PI |
pulmonic insufficiency disease |
| PKU |
phenylketonuria |
| PMH |
previous medical history |
| PMI |
point of maximal impulse |
| PMN |
polymorphonuclear leukocyte (neutrophil) |
| PND |
paroxysmal nocturnal dyspnea |
| PO |
by mouth |
| POD |
post-op day |
| PP |
postprandial or pulsus paradoxus |
| PPD |
purified protein derivative |
| PR |
by rectum |
| PRBC |
packed red blood cells |
| PRN |
as needed |
| PS |
pulmonic stenosis |
| PT |
prothrombin time, or physical therapy |
| Pt |
patient |
| PTCA |
percutaneous transluminal coronary angioplasty |
| PTH |
parathyroid hormone |
| PTHC |
percutanous transhepatic cholangiogram |
| PTT |
partial thromboplastin time |
| PUD |
peptic ulcer disease |
| PVC |
premature ventricular contraction |
| PVD |
peripheral vascular disease |