76 Survival Outcomes from Burn Injury in Rural Africa
Abstract Introduction Burn injuries contribute a considerable burden of disease in variable-resource settings, often resulting in mortality. Despite contributing a substantial burden, outcomes from burn injuries in rural Africa are rarely described. The objective of this study was to examine factors associated with mortality from burn injury in rural Africa. Methods A retrospective chart review was conducted for all patients with burn injury from January 1, 2014 to December 31, 2017 at a 300-bed faith-based, teaching hospital in eastern Africa. Bivariate analysis was used to compare patients who survived the hospital stay with those who did not. Using total body surface area (TBSA), the LD50 (Lethal Dose 50, burn size with a lethality of 50% of patients), and the modified-Baux score were calculated. Due to small sample size, lasso inference techniques for logistic regression were utilized to avoid overfitting a model and to determine relevant risk factors for mortality, by evaluating burn severity, age, sex, location of residence, payer status, time from injury to arrival, distance from hospital, presence of full thickness burns, inhalational injury, and referral status. Results A total 171 burn injury patients were reviewed for this study; two were excluded due to missing data. Among 169 patients, 14.8% (n=25) experienced mortality prior to hospital discharge. Fifty patients suffered an adverse event (29.6%) including: 17 wound infections, 10 urinary tract infections, 10 with sepsis, and 25 with respiratory complications. The LD50 for TBSA was 42%. The LD50 for the modified-Baux score was 81. Non-survivors had higher average TBSA (31.0±5.0% vs 11.5±0.8%; p< 0.01), more inhalational injury (44% vs 2.8%, p< 0.01), full-thickness burns (56.5% vs 23.9%, p< 0.01), and complications (88% vs 19.4%, p< 0.01). Odds of mortality increased 1.06 times for every percent increase in TBSA burn (95%CI: 1.02, 1.11; p< 0.01) and 13.9 times with inhalational injury (95%CI: 3.4, 56.4; p < 0.01). Conclusions Mortality from burn injury represents a substantial portion of patients at a hospital in rural Africa. Factors of larger TBSA and inhalational injury represent the greatest risk.