Abstract
Immunocompromised patients with Vibrio vulnificus septicemia are at high risk for fatality. When a hemorrhagic bullous necrotic cutaneous lesion (HBNCL) and decreased blood pressure develop, approximately 50% of V vulnificus septicemic patients die within 48 hours. This study aimed to evaluate the risk factor(s) for fatality among patients with V vulnificus septicemia, emphasizing the role of prescribed antimicrobial agents in general and the therapeutic efficacy of the combination of a third-generation cephalosporin and tetracycline or its analogue in particular. Patients with the diagnosis of V vulnificus infection admitted to 5 large medical centers in Taiwan between 1995 and 2003 were included in this retrospective study. Patients were divided into 2 groups: those without [corrected] HBNCLs (group 1) [corrected] and those with [corrected] HBNCLs (group 2) [corrected]Patients were further divided into subgoups with [corrected] fatalities (fatal subgroup) and those without fatalities (nonfatal subgroup). A total of 93 patients participated in the study. In group 1, the fatal subgroup had higher Acute Physiology and Chronic Health Evaluation II (APACHE II) scores (P = .006) and a higher proportion of shock at arrival at the medical center (P = .015) than the nonfatal subgroup. In group 2, the effect of a first- or second-generation cephalosporin plus an aminoglycoside was negative (P = .01) and that of combined third-generation cephalosporin and tetracycline or its analogue was positive (P<.001); significant differences were found between the fatal and nonfatal subgroups in the APACHE II score (P<.001), number who were in shock at arrival at the medical center (P = .02), delayed surgical intervention (P = .03), and peripheral leukocytosis (P = .03). Shock at arrival at the medical center (odds ratio [OR], 19.25; 95% confidence interval [CI], 1.768-209.54; P = .02) was an independent risk factor for fatality in patients without HBNCLs. Use of a third-generation cephalosporin and tetracycline or its analogue significantly reduced fatality rates in patients with HBNCLs (OR, 0.037; 95% CI, 0.007-0.192; P<.001). Septic shock is a determinant of fatality in patients with V vulnificus septicemia without HBNCLs; our data suggest that the combination of a third-generation cephalosporin and tetracycline or its analogue may be a better choice in antimicrobial treatment of V vulnificus septicemic patients with HBNCLs.
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