| NIPTS | noise-induced permanent threshold shift |
|---|---|
| OPIDN | organophosphorus-induced delayed neuropathy |
| PIH | periventricular-intraventricular hemorrhage; phenyl isopropylhydrazine; pregnancy-induced hypertensi... |
| PIM | penicillamine-induced myasthenia |
| PIT | pacing-induced tachycardia; patella inhibition test; picture identification test; pitocin; pitressin... |