| inf | infant, infantile; inferior |
|---|---|
| IOS | infant observation scale; International Organization for Standardization |
| IRDS | idiopathic respiratory distress syndrome; infant respiratory distress syndrome |
| IS | ileal segment; immediate sensitivity; immune serum; immunosuppression; impingement syndrome; incenti... |
| LBWI | low-birth-weight infant |
| VPC | Ventricular premature contraction |
|---|---|
| VPD | Ventricular premature depolarization |