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Comparison of Ibuprofen vs Acetaminophen and Severe Bleeding Risk After Pediatric Tonsillectomy: A Noninferiority Randomized Clinical Trial.


ABSTRACT: Importance:Ibuprofen is an effective analgesic after tonsillectomy alone or tonsillectomy with adenoidectomy, but concerns remain about whether it increases postoperative hemorrhage. Objective:To investigate the effect of ibuprofen compared with acetaminophen on posttonsillectomy bleeding (PTB) requiring surgical intervention in children. Design, Setting, and Participants:A multicenter, randomized, double-blind noninferiority trial was conducted at 4 tertiary medical centers (Massachusetts Eye and Ear Infirmary, Boston; Naval Medical Center, San Diego, California; Naval Medical Center, Portsmouth, Virginia; Madigan Army Medical Center, Tacoma, Washington). A total of 1832 children were assessed for eligibility (presence of sleep-disordered breathing or obstructive sleep apnea, adenotonsillar hypertrophy, or infectious tonsillitis undergoing extracapsular tonsillectomy by electrocautery). Of these, 1091 were excluded because they did not meet eligibility criteria (n?=?681) or refused to participate (n?=?410); thus, 741 children aged 2 to 18 years undergoing tonsillectomy alone or tonsillectomy with adenoidectomy were enrolled between May 3, 2012, and January 20, 2017. Interventions:Participants were randomized to receive ibuprofen, 10 mg/kg (n?=?372), or acetaminophen, 15 mg/kg (n?=?369), every 6 hours for the first 9 postoperative days. Main Outcomes and Measures:Rate and severity of posttonsillectomy bleeding were recorded using a postoperative bleeding severity scale: type 1 (bleeds that were observed at home or evaluated in the emergency department without further intervention), type 2 (bleeds that required readmission for observation), and type 3 (bleeds that required a return to the operating room for control of hemorrhage). Type 3 bleeding was the main outcome measure. The noninferiority margin was set at 3%, and modified intention-to-treat analysis was used. Results:Of the 741 children enrolled, 688 children (92.8%) (median [interquartile range] age, 5 [4] years; 366 boys [53.2%]) received the study medication and were included in a modified intention-to-treat analysis. The rate of bleeding requiring operative intervention was 1.2% in the acetaminophen group and 2.9% in the ibuprofen group (difference, 1.7%; 97.5% CI upper limit, 3.8%; P?=?.12 for noninferiority). There were no significant adverse events or deaths. Conclusions and Relevance:This study could not exclude a higher rate of severe bleeding in children receiving ibuprofen after tonsillectomy alone or tonsillectomy with adenoidectomy. This finding should be considered when selecting a postoperative analgesic regimen. Further studies are needed to understand if bleeding risk is affected when ibuprofen is used for a shorter duration or in combination with acetaminophen for postoperative analgesia. Trial Registration:ClinicalTrials.gov identifier: NCT01605903.

SUBMITTER: Diercks GR 

PROVIDER: S-EPMC6583024 | BioStudies | 2019-01-01

REPOSITORIES: biostudies

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