lower extremity Burns, complications and outcome.

We have encountered many burn cases with lower extremity burn with adverse outcome. The study was a retrospective cohort study in 2 years, mean (SD) of follow up was 12(7) months. All demographic data, cause burn, time, total burn surface area (TBSA), presence lower extremity burn and its burn surface area (BSA), foot burn, delay in treatment, smoking, infection, morbidity, co-morbid diseases, length of stay (LOS), amputation, mortality, and outcome were gathered from patients' files. Statistical analysis was done with SPSS 21software. We had 14,215 burn patients, of them 995 were admitted according to criteria of ABA. Six hundred and ten (61.3%) were male and 358 (37%) female. Male to female ratio was 1.58:1. The mean age +/- SD was 33.64 +/- 23.45. Mean (SD) of lower extremity BSA was 12.09 +/- 9.18%. The patients who had 10 to 19% burn, had 3 times more risk of mortality than patients with 0 to 9% burn (P <.018). And those with 20 to 29% burn had 35 times more risk of mortality comparing to patients with 0 to 9% burn. The difference was significant too. (P <.000). Delay in treatment, presence of co-morbid diseases and diabetes would not do any increase in mortality. The sex, weight, cause of burn, diabetes, and delay in treatment have not any influence on the death risk. But age and lower extremity BSA have influence on the risk of death. According to statistical study: with every 1-year increase in age, death rate increased by 4% (P <.0001). With every 1% increase in lower extremity BSA, death rate increase by 9% (P <.0005) and with every 1 day increase in LOS, the death rate increase by 4%. Statistical study shows lower extremity burn, TBSA, age, and LOS have great influence on the outcome of these patients. Sex, weight, cause of burn, and delay in treatment have not affected the risk of mortality.