| BI | background interval; bacterial or bactericidal index; base-in [prism]; basilar impression; Billroth ... |
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| BU | base of prism up; Bethesda unit; blood urea; Bodansky unit; bromouracil; burn unit |
| DPB | days post-burn; diffuse panbronchiolitis |
| ISBI | International Society for Burn Injuries |
| LA50 | total body surface area of burn that will kill 50% of patients (lethal area) |
| full-thickness burn | A burn involving destruction of the entire skin; deep third-degree burns extend into subcutaneous fat, muscle, or bone and often cause much scarring. Synonym: full-thickness burn. (05 Mar 2000) |
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