Jiun-Nong Lin1, Lin-Li Chang, Chung-Hsu Lai, Hsi-Hsun Lin, Yen-Hsu Chen. 1. Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan; Department of Emergency and Critical Care Medicine, E-Da Hospital, I-Shou University, Kaohsiung, Taiwan; Division of Infectious Diseases, Department of Internal Medicine, E-Da Hospital, I-Shou University, Kaohsiung, Taiwan.
Abstract
BACKGROUND: Group A Streptococcal (GAS) necrotizing fasciitis is a critical emergency. Patients with necrotizing fasciitis principally present to emergency departments (EDs), but most studies are focused on hospitalized patients. OBJECTIVE: An ED patient-based retrospective study was conducted to investigate the clinical characteristics, associated factors, and outcomes of GAS necrotizing fasciitis in the ED. METHODS: Patients visiting the ED from January 2005 through December 2011 with the diagnosis of GAS necrotizing fasciitis were enrolled. All patients with the diagnosis of noninvasive skin and soft-tissue infections caused by GAS were included as the control group. RESULTS: During the study period, 75 patients with GAS necrotizing fasciitis were identified. Males accounted for 84% of patients. The most prevalent underlying disease was diabetes mellitus (45.3%). Bullae were recognized in 37.3% of patients. One third of cases were complicated by bacteremia. Polymicrobial infections were found in 30.7% of patients. Overall mortality rate for GAS necrotizing fasciitis was 16%. Patients aged >60 years with diabetes mellitus, liver cirrhosis, and gout were considerably more likely to have GAS necrotizing fasciitis than noninvasive infections. Patients presenting with bacteremia, shock, duration of symptoms/signs <5 days, low white blood cell count, low platelet count, and prolonged prothrombin time were associated with increased mortality. Surgery is a significantly negative factor for mortality of patients with GAS necrotizing fasciitis (odds ratio = 0.16; 95% confidence interval 0.002-0.16; p < 0.001). CONCLUSIONS: A better understanding of the associated factors and initiation of adequate treatments will allow for improved survival after GAS necrotizing fasciitis.
BACKGROUND:Group A Streptococcal (GAS) necrotizing fasciitis is a critical emergency. Patients with necrotizing fasciitis principally present to emergency departments (EDs), but most studies are focused on hospitalized patients. OBJECTIVE: An ED patient-based retrospective study was conducted to investigate the clinical characteristics, associated factors, and outcomes of GAS necrotizing fasciitis in the ED. METHODS:Patients visiting the ED from January 2005 through December 2011 with the diagnosis of GAS necrotizing fasciitis were enrolled. All patients with the diagnosis of noninvasive skin and soft-tissue infections caused by GAS were included as the control group. RESULTS: During the study period, 75 patients with GAS necrotizing fasciitis were identified. Males accounted for 84% of patients. The most prevalent underlying disease was diabetes mellitus (45.3%). Bullae were recognized in 37.3% of patients. One third of cases were complicated by bacteremia. Polymicrobial infections were found in 30.7% of patients. Overall mortality rate for GAS necrotizing fasciitis was 16%. Patients aged >60 years with diabetes mellitus, liver cirrhosis, and gout were considerably more likely to have GAS necrotizing fasciitis than noninvasive infections. Patients presenting with bacteremia, shock, duration of symptoms/signs <5 days, low white blood cell count, low platelet count, and prolonged prothrombin time were associated with increased mortality. Surgery is a significantly negative factor for mortality of patients with GAS necrotizing fasciitis (odds ratio = 0.16; 95% confidence interval 0.002-0.16; p < 0.001). CONCLUSIONS: A better understanding of the associated factors and initiation of adequate treatments will allow for improved survival after GAS necrotizing fasciitis.
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