Rl. Lark et al., Four-year prospective evaluation of community-acquired bacteremia: Epidemiology, microbiology, and patient outcome, DIAG MICR I, 41(1-2), 2001, pp. 15-22
The objectives of this study were to (1) describe the epidemiology and micr
obiology of community-acquired bacteremia; (2) determine the crude mortalit
y associated with such infections; and (3) identify independent predictors
of mortality. All patients with clinically significant community-acquired b
acteremia admitted to a university-affiliated Veterans Affairs medical cent
er from January 1994 through December 1997 were evaluated. During the study
period, 387 bacteremic episodes occurred in 334 patients. Staphylococcus a
ureus, Escherichia coli, and coagulase-negative staphylococci were the most
commonly isolated organisms, the most frequent sources were the urinary tr
act and intravascular catheters. Approximately 14% of patients died. Patien
t characteristics independently associated with increased mortality include
d shock (OR 3.7, p = 0.02) and renal failure (OR 4.0, p = 0.003). The risk
of death was also higher in those whose source was pneumonia (OR 6.3, p = 0
.03) or an intra-abdominal site (OR 10.7, p = 0.02), or if multiple sources
were identified (OR 13.4, p = 0.003). Community-acquired bacteremia is oft
en device-related and may be preventable. Strategies that have been success
ful in preventing nosocomial device-related bacteremia should be adapted to
the outpatient setting. (C) 2001 Elsevier Science Inc. All rights reserved
.