| IASA | interatrial septal aneurysm |
|---|---|
| IASH | isolated asymmetric septal hypertrophy |
| ISD | immunosuppressive drug; Information Services Division; inhibited sexual desire; interstimulus distan... |
| ISH | icteric serum hepatitis; in situ hybridization; internal self helper; International Society of Hemat... |
| IVSD | interventricular septal defect |