| PND | paroxysmal nocturnal dyspnea; partial neck dissection; postnasal drainage; postnasal drip; postnatal... |
|---|---|
| PNO | Principal Nursing Officer |
| POMP | phase-offset multiplanar [pulse sequence in magnetic resonance imaging]; principal outer material pr... |
| A2 | Aortic Component of the Second Heart Sound(S2) |
| P2 | Pulmonary Component of the Second Heart Sound(S2) |