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Recent Increase in Adverse TMP-SMX Reactions in Children

Last Updated: December 03, 2012.

There has been a significant increase in adverse drug reactions associated with use of trimethoprim-sulfamethoxazole for treatment of skin and soft tissue infection in children, according to research published online Dec. 3 in Pediatrics.

MONDAY, Dec. 3 (HealthDay News) -- There has been a significant increase in adverse drug reactions (ADRs) associated with use of trimethoprim-sulfamethoxazole (TMP-SMX) for treatment of skin and soft tissue infection (SSTI) in children, according to research published online Dec. 3 in Pediatrics.

Jennifer L. Goldman, M.D., from the University of Missouri in Kansas City, and colleagues conducted a retrospective chart review to characterize TMP-SMX ADRs in children, from 2000 to 2009. The Pediatric Health Information System database was used to estimate the frequency of hospitalizations for TMP-SMX ADRs at 25 tertiary pediatric hospitals.

The researchers found that, at the study institution, there were five cases of TMP-SMX ADRs from 2000 to 2004, compared with 104 cases from 2005 to 2009. Of the cases, 58 percent had been treated for SSTI. Nationally, there was a similar trend, with the incidence of TMP-SMX ADRs more than doubling (P < 0.001) from 2004 to 2009 at comparable pediatric hospitals. The percentage of children prescribed TMP-SMX for SSTI sharply increased during the study period (0 to 2 percent from 2000 to 2004; 9 to 17 percent from 2005 to 2009), although national outpatient data revealed no change in overall TMP-SMX prescribing.

"TMP-SMX ADRs have occurred more frequently coincident with increased prescribing for SSTI," the authors write. "Increased usage alone may explain the increasing trend of TMP-SMX ADRs in children; however, drug-disease interaction may play a role and requires further investigation."

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