| IPA | immunoperoxidase assay; incontinentia pigmenti achromians; independent physician or practice associa... |
|---|---|
| PAC | papular acrodermatitis of childhood; parent-adult-child; pericarditis-arthropathy-camptodactyly [syn... |
| PM | after death (Lat. post mortem); after noon [Lat. post meridiem]; mean pressure; pacemaker; pantomogr... |
| ACI | acceleration index; acoustic comfort index; acute cardiac ischemia; acute coronary infarction; acute... |
| AIE | acute inclusion-body encephalitis; acute infectious encephalitis; acute infective endocarditis |