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Nonsteroidal anti-inflammatory drugs and perioperative bleeding in paediatric tonsillectomy - PubMed

  • ️Tue Jan 01 2013

Review

Nonsteroidal anti-inflammatory drugs and perioperative bleeding in paediatric tonsillectomy

Sharon R Lewis et al. Cochrane Database Syst Rev. 2013.

Abstract

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 2005 and was updated in 2010 and in 2012.

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 2012, Issue 10); MEDLINE (inception until October 2012); EMBASE (inception until October 2012); 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 studies that involved 1101 children in this updated review. One study was added as a result of our 2012 search, another previously included study was removed due to lack of randomization. Fourteen included studies compared NSAIDs with other analgesics or placebo and reported on bleeding requiring surgical intervention. The use of NSAIDs was associated with a non-significant increase in the risk of bleeding requiring surgical intervention: Peto odds ratio (OR) 1.69 (95% confidence interval (CI) 0.71 to 4.01). Ten studies involving 365 children reported perioperative bleeding requiring non-surgical intervention. NSAIDs did not significantly alter the number of perioperative bleeding events requiring non-surgical intervention: Peto OR 0.99 (95% CI 0.41 to 2.40) but the confidence intervals did not exclude an increased risk. Thirteen studies involving 1021 children reported postoperative vomiting. There was less vomiting when NSAIDs were used as part of the analgesic regime than when NSAIDs were not used: Mantel Haenszel (M-H) risk ratio (RR) 0.72 (95% CI 0.61 to 0.85).

Authors' conclusions: There is insufficient evidence to exclude an increased risk of bleeding when NSAIDs are used in paediatric tonsillectomy. They do however confer the benefit of a reduction in vomiting.

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Conflict of interest statement

Sharon R Lewis: see Sources of support

Amanda Nicholson: AN worked for the Cardiff Research Consortium, which provided research and consultancy services to the pharmaceutical industry, from March to Septmber 2011. Cardiff Research Consortium has no connection with AN's work with The Cochrane Collaboration. AN's husband has small direct holdings in several drug and biotech companies as part of a wider balanced share portfolio

Mary E Cardwell: none known

Gretchen Siviter: none known

Andrew F Smith: see Sources of support

Figures

1
1

Study flow diagram for the results of the 2010 update database search.

2
2

Study flow diagram of May 2010 to October 2012 update search.

3
3

Methodological quality summary: review authors' judgements about each methodological quality item for each included study.

4
4

Forest plot of comparison: 1 Nonsteroidal versus control (analgesics or placebo), outcome: 1.1 Perioperative bleeding requiring surgical intervention.

5
5

Funnel plot of comparison: 1 Nonsteroidal versus control (analgesics or placebo), outcome: 1.1 Perioperative bleeding requiring surgical intervention.

6
6

Forest plot of comparison: 1 Nonsteroidal versus control (analgesics or placebo), outcome: 1.3 Vomiting.

1.1
1.1. Analysis

Comparison 1 Nonsteroidal versus control (analgesics or placebo), Outcome 1 Perioperative bleeding requiring surgical intervention.

1.2
1.2. Analysis

Comparison 1 Nonsteroidal versus control (analgesics or placebo), Outcome 2 Perioperative bleeding requiring non‐surgical intervention.

1.3
1.3. Analysis

Comparison 1 Nonsteroidal versus control (analgesics or placebo), Outcome 3 Vomiting.

2.1
2.1. Analysis

Comparison 2 Subgroup by NSAID type, Outcome 1 Perioperative bleeding requiring surgical intervention.

2.2
2.2. Analysis

Comparison 2 Subgroup by NSAID type, Outcome 2 Perioperative bleeding requiring non‐surgical intervention.

2.3
2.3. Analysis

Comparison 2 Subgroup by NSAID type, Outcome 3 Vomiting.

3.1
3.1. Analysis

Comparison 3 Subgroup by timing of administration, Outcome 1 Perioperative bleeding requiring surgical intervention.

3.2
3.2. Analysis

Comparison 3 Subgroup by timing of administration, Outcome 2 Perioperative bleeding requiring non‐surgical intervention.

3.3
3.3. Analysis

Comparison 3 Subgroup by timing of administration, Outcome 3 Vomiting.

4.1
4.1. Analysis

Comparison 4 Subgroup by control (placebo or other treatment), Outcome 1 Perioperative bleeding requiring surgical intervention.

4.2
4.2. Analysis

Comparison 4 Subgroup by control (placebo or other treatment), Outcome 2 Perioperative bleeding requiring non‐surgical intervention.

4.3
4.3. Analysis

Comparison 4 Subgroup by control (placebo or other treatment), Outcome 3 Vomiting.

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References

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References to ongoing studies

Hartnick {published data only}
    1. Postoperative Ibuprofen and the Risk of Bleeding After Tonsillectomy with or without Adenoidectomy. Ongoing study May 2012.
KITS Study {published data only}
    1. KITS Study ‐ Ketorolac in Tonsillectomy Surgery: a Double Blinded, Randomized Clinical Trial. Ongoing study December 2011.
Wheeler {published data only}
    1. Safety and Efficacy of Intravenous Ibuprofen for Treatment of Pain in Pediatric Patients undergoing Tonsillectomy. Ongoing study April 2011.

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References to other published versions of this review

Cardwell 2005
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Cardwell 2010
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