| IACD | implantable automatic cardioverter-defibrillator; intra-arterial conduction defect |
|---|---|
| IACI | idiopathic arterial calcification of infancy |
| IADSA | intra-arterial digital subtraction angiography |
| IAV | intermittent assisted ventilation; intra-arterial vasopressin |
| LADP | left acromio-dorso-posterior [position]; left anterior descending arterial pressure |