Nonsteroidal anti‐inflammatory drugs and perioperative bleeding in paediatric tonsillectomy

BACKGROUND: Nonsteroidal anti-inflammatory drugs (NSAIDs) are used for pain relief following tonsillectomy in children. However, as they inhibit platelet aggregation and prolong bleeding time, they could cause increased perioperative bleeding. The overall risk remains unclear. This review was originally published in 2004 and was updated in 2010. OBJECTIVES: The primary objective of this review was to assess the effects of NSAIDs on bleeding with paediatric tonsillectomy. Our secondary outcome was to establish whether NSAIDs affect the incidence of other postoperative complications when compared to other forms of analgesia. SEARCH METHODS: We searched the Cochrane Central Register of Controlled Trials (CENTRAL) (The Cochrane Library 2010, Issue 6); MEDLINE (inception until May 2010); EMBASE (inception until May 2010); Current Problems (produced by the UK Medicines Control Agency), MedWatch (produced by the US Food and Drug Administration) and the Australian Adverse Drug Reactions Bulletins (to May 2010). The original search was performed in August 2004. We also contacted manufacturers and researchers in the field. SELECTION CRITERIA: We included randomized controlled trials assessing NSAIDs in children, up to and including 16 years of age, undergoing elective tonsillectomy or adenotonsillectomy. DATA COLLECTION AND ANALYSIS: Two authors independently assessed trial quality and extracted the data. We contacted study authors for additional information, where necessary. MAIN RESULTS: We included 15 trials that involved 1046 children in this updated review. This included one trial that was added as a result of updating our search and another trial that we had incorrectly excluded from our previous review. All included trials compared NSAIDs with other analgesics or placebo and looked at bleeding requiring surgical intervention. NSAIDs did not significantly alter the number of perioperative bleeding events requiring surgical intervention: Peto odds ratio (OR) 1.32 (95% confidence interval (CI) 0.47 to 3.70). Eight trials involving 532 children looked at bleeding not requiring surgical intervention. NSAIDs did not significantly alter the number of perioperative bleeding events not requiring surgical intervention: Peto OR 1.00 (95% CI 0.39 to 2.53). Twelve trials involving 928 children looked at postoperative nausea and vomiting. There was less nausea and vomiting when NSAIDs were used as part of the analgesic regime than when NSAIDs were not used: OR 0.49 (95% CI 0.29 to 0.83). AUTHORS' CONCLUSIONS: NSAIDs did not cause any increase in bleeding that required a return to theatre. There was significantly less nausea and vomiting when NSAIDs were used compared to alternative analgesics.