| HCE | hypoglossal carotid entrapment |
|---|---|
| HCSS | hypersensitive carotid sinus syndrome |
| IC | icteric, icterus; immune complex; immunoconjugate; immunocytochemistry; immunocytotoxicity; impedanc... |
| ICA | Institute of Clinical Analysis; internal carotid artery; intracranial aneurysm; islet cell antibody |
| ICAO | internal carotid artery occlusion |