Aging and burn: a five-year retrospective study in a major burn centre in Portugal.

: Aging is an important factor contributing decisively to the clinical outcome of burn patients. The aim of this study was to assess the characteristics of patients admitted to a Burn Unit and determine the impact of aging on mortality. A retrospective analysis of patients successively admitted to a major burn centre in Portugal from 1/1/2012 to 31/12/2016 was conducted. They were divided into 2 groups: "elderly" (≥65 years) and "non-elderly" (<65 years). A total of 736 patients were included, 324 of them classified as elderly with a mean age of 78.12±7.14 years. Most of the patients in the elderly group were female (59.6%), in contrast to the non-elderly group (35%; p<0.001). The elderly patients had a higher mean length of hospital stay (20.14±18.46 days; p=0.011). Most of the burns were caused by fire (58.3%) and scalding (36.1%) and mainly after home accidents. Elderly patients showed a higher mean of burn severity index (7.26; p<0.001) and 6.8% needed an amputation. Mortality rate was significantly higher in the elderly group (11.7%; p=0.001). Age (p<0.001; OR=1.169), a higher total burn surface area (p<0.001; OR=1.081), full-thickness burns (p=0.005; OR=11.985) and the need for mechanical ventilation (p<0.001; OR=16.856) were associated with a higher mortality risk and reached statistical significance after multivariate analysis. The functional and vital prognosis of patients admitted to a burn centre is affected by multiple factors. This study showed that age, higher TBSA, full-thickness burns and need for mechanical ventilation seem to increase the risk of mortality.