| HAI | hemagglutination inhibition; hepatic arterial infusion |
|---|---|
| HAPS | hepatic arterial perfusion scintigraphy |
| IA | ibotenic acid; immune adherence; immunoadsorbent; immunobiologic activity; impedance angle; indolami... |
| IACD | implantable automatic cardioverter-defibrillator; intra-arterial conduction defect |
| IACI | idiopathic arterial calcification of infancy |