| IAO | immediately after onset; intermittent aortic occlusion; International Association of Orthodontists |
|---|---|
| IAP | immunosuppressive acidic protein; inosinic acid pyrophosphorylase; Institute of Animal Physiology; i... |
| IAPV | intermittent abdominal pressure ventilation |
| IAV | intermittent assisted ventilation; intra-arterial vasopressin |
| IBI | intermittent bladder irrigation; ischemic brain infarction |