Meta-analysis of the timing of haemorrhage after tonsillectomy: An important factor in determining the safety of performing tonsillectomy as a day case procedure

A. M. D. Bennett, A. B. Clark, A. P. Bath, P. Q. Montgomery

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Abstract

Objectives: To perform a meta-analysis of studies of the timing of primary tonsillectomy haemorrhage. In particular to compare the difference in risk between 0–8 and 8–24 h; that is whether overnight inpatient tonsillectomy is required.  

Design: Medline search of all tonsillectomy studies to perform a meta-analysis of the timing of primary haemorrhages.  

Setting: Literature-based study.  

Participants: All adult and paediatric tonsillectomy studies giving the absolute number and timing of all primary haemorrhages.  

Main outcome measures: The overall incidence of haemorrhage occurring between 0–8 and 8–24 h. The overall incidence of haemorrhage for each of the first 24 h after operation. Compare risk of a bleed occurring 0–8, 8–24 and >24 h where data were available.  

Results: From a 1.4% overall risk of a primary haemorrhage only one in 14 occur after 8 h, i.e. 0.1% (95% CI = 0.08–0.16%). A total of 833 patients would require to be kept overnight in order to identify one case of bleeding after 8 h.  

Conclusions: Little benefit was conferred from overnight admission from the point of view of monitoring for primary haemorrhage. A case can be made for either day-case tonsillectomy (hospital stay over the period in which 93% of primary haemorrhages would occur) or the ‘belt-and-braces’ approach of a 1-week stay (during which all haemorrhages would occur) but current 24-h admission appears illogical.
Original languageEnglish
Pages (from-to)418-423
Number of pages6
JournalClinical Otolaryngology
Volume30
Issue number5
Early online date20 Sep 2005
DOIs
Publication statusPublished - Oct 2005

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