• Alun Tomkinson, Wendy Harrison, David Owens, Samuel Fishpool, and Mark Temple.
• Department of Otolaryngology-Head and Neck Surgery, University Hospital Wales, Cardiff, United Kingdom. tomkinsona@cardiff.ac.uk
• Laryngoscope. 2012 Jun 1;122(6):1246-53.

Objectives/HypothesisTo examine postoperative hemorrhage following adenoidectomy.Study DesignProspective multicenter observational study.MethodsThe Surgical Instrument Surveillance Programme (SISP) was established in 2003 to monitor tonsil and adenoid surgery in all hospitals in Wales. Data were examined between April 1, 2003 and June 30, 2008, for risk factors that may contribute to primary (R1) or secondary (R2) postoperative hemorrhage from the adenoid bed, of a severity sufficient to require a return to the operating room.ResultsThere were 5,588 procedures included, of which 4,225 included simultaneous tonsillectomy. The study included 2,903 (52%) males with a median age of 5.8 years (interquartile range [IQR], 4.5-7.7 years) and 2,685 (48%) females with a median age of 6.5 years (IQR, 5.0-9.1 years). There were 22 patients (0.4%; confidence interval [CI], 0.2-0.6) who returned to the operating room with a postoperative hemorrhage arising from the adenoid bed. These were exclusively R1 hemorrhage; there were no instances of R2 hemorrhage (0.0%; CI, 0.0-0.1). No specific risk factors for R1 hemorrhage could be identified. There were 38 patients in the adenotonsillectomy group who returned to operating room with a postoperative hemorrhage arising from the tonsil bed (0.5%; CI, 0.3-0.8). R1 was seen in 22 patients (0.5%; CI, 0.3-0.8) and R2 in 16 patients (0.4%; CI, 0.2-0.6).ConclusionsAdenoidectomy appears to be primarily a procedure performed in childhood. The rate of R1 hemorrhage following adenoidectomy is one in 200 (0.5%) and is similar to the R1 hemorrhage rate for tonsillectomy. R2 hemorrhage following an adenoidectomy appears to be extremely rare. In children, the risk of a serious primary hemorrhage following an adenotonsillectomy is double that of either procedure when performed alone.Copyright © 2012 The American Laryngological, Rhinological, and Otological Society, Inc.

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