Burn center admissions of patients with autoimmune rheumatic diseases: clinical characteristics and outcomes.

The ojective of this study was to describe the reasons for admission to the burn center of patients with autoimmune rheumatic diseases (ARD), identify their clinical characteristics, and assess their outcomes relative to the non-ARD patients. We conducted a retrospective study of ARD patients admitted to a burn center from 2011 to 2018, and they were compared with a non-ARD group of patients. Medical records were reviewed for patients' clinical characteristics, including demographics, ARD diagnosis, laboratory studies, and APACHE II score. Additionally, we evaluate the reason for admission in the burn center, management during the burn center stay, complications, outcomes including length of stay, and mortality during the hospital stay. Among the 1094 adult patients admitted during the study period, 30 (2.7%) had a new or prior diagnosis of ARD. The most common ARD associated with admission in the burn center was rheumatoid arthritis (RA) (37%, n = 11) followed by systemic lupus erythematosus (SLE) (33%, n = 10). Burn injuries (47%, n = 14), and Stevens-Johnson syndrome/toxic epidermal necrolysis (SJS/TEN) (30%, n = 9) were the most frequent admission reasons. Compared with the non-ARD group (n = 52), ARD patients were more likely to be females (60% vs. 24%, P = 0.004), to receive glucocorticoids (50% vs. 6.9%; P < 0.05), require renal replacement (20% vs. 5%, P < 0.05) and enteral nutrition (63% vs. 24%; P < 0.05) during their burn stay. The non-ARD group was more likely to be admitted for burn injuries (81% vs 46%, P < 0.01). RA and SLE were the most common ARD, and burn injuries, followed by SJS/TEN, the most frequent causes associated with burn admissions. ARD patients were more likely to be female, received glucocorticoids, require renal replacement, and enteral nutrition during the burn stay.