COST-EFFECTIVENESS
OF BLOOD CULTURES FOR ADULT PATIENTS WITH CELLULITIS.
Perl B,
et al. Clin Infect Dis 1999 Dec;29(6):1483-8.
BACKGROUND:
To assess the cost-effectiveness of blood cultures for patients with
cellulitis, a retrospective review was conducted of clinical and
microbiological data for all 757 patients admitted to a medical center because
of community-acquired cellulitis during a 41-month period.
RESULTS:
Blood cultures were performed for 553 patients (73%); there were a total of 710
blood samples (i.e., a mean of 1.3 cultures were performed per patient). In
only 11 cases (2.0%) was a significant patient-specific microbial strain
isolated, mainly beta-hemolytic streptococci (8 patients [73%]). An organism
that was considered a contaminant was isolated from an additional 20 culture
bottles (3. 6%). The cost of laboratory workup of the 710 culture sets was $36,
050. Isolation of streptococci led to a change from empirical treatment with
cefazolin to penicillin therapy for 8 patients. All patients recovered.
CONCLUSION:
In conclusion, the yield of blood cultures is very low, has a marginal impact
on clinical management, and does not appear to be cost-effective for most
patients with cellulitis.