Does primary indication for tonsillectomy influence post-tonsillectomy haemorrhage rates in children?

Area of Science:

• Otolaryngology
• Surgical Complications
• Pediatric Surgery

Background:

• Post-tonsillectomy bleeding, particularly secondary hemorrhage, is a significant surgical risk.
• The causes of secondary hemorrhage are not fully understood, with infection traditionally implicated.
• Limited data exist comparing bleeding rates between obstructive sleep apnea (OSA) and recurrent tonsillitis indications for tonsillectomy.

Purpose of the Study:

• To evaluate and compare secondary post-tonsillectomy hemorrhage rates in patients undergoing surgery for obstructive sleep apnea (OSA) versus recurrent tonsillitis.
• To investigate the influence of the primary indication for tonsillectomy on secondary bleeding rates.

Main Methods:

• Retrospective review of 568 patients presenting with post-operative complications within 4 weeks of tonsillectomy or adenotonsillectomy (2008-2013).
• Analysis of 222 patients who presented with secondary post-operative bleeding.
• Electronic case records were used to determine the primary indication for surgery (OSA vs. recurrent tonsillitis).

Main Results:

• The rate of secondary hemorrhage was approximately 4.9% for recurrent tonsillitis and 15.6% for OSA.
• Patients undergoing tonsillectomy for OSA had a significantly higher risk of secondary bleeding (relative risk 0.31 compared to recurrent tonsillitis).
• The incidence of bleeding correlated with the primary indication for surgery each year.

Conclusions:

• Contrary to expectations, the secondary bleeding rate for obstructive sleep apnea (OSA) was substantially higher than for recurrent tonsillitis.
• The primary indication for tonsillectomy is a critical factor influencing the rate of secondary post-operative bleeding.