Lin DL, et al. - The safety of adenoidectomy and risk factors of re-adenoidectomy were investigated, with an intent to offer evidence-based information to clinicians for further consideration. Generally, adenoidectomy represents a safe surgical procedure, with low complication and low revision rate. Adenoidectomy performed by young visiting staff with medium to higher surgical volume in the medium to higher volume hospital might result in lower revision rate. Patients with otitis media with effusion, sinusitis, chronic pharyngitis, and sleep disorder would be subject to higher rate of re-adenoidectomy. Surgeons should be aware and sufficiently explain this information to the parents before surgery.

• Researchers utilized data obtained from Taiwan’s National Health Insurance Research Database from the period 2002–2011.
• Data from the hospitalization group was utilized and information was gathered with respect to those individuals who accepted adenoidectomy with or without tonsillectomy and post-adenoidectomy bleeding.
• Univariate and multi-variate analysis was carried out to explore the possible risk factors of re-adenoidectomy.

• A total of 5435 individuals who accepted a first adenoidectomy with or without tonsillectomy were included, of those, 107 (1.97%) accepted the revision adenoidectomy until 2011.
• Post-op bleeding was approximately 0.28%.
• The following was shown by the revision rate associated with patient age: 0–4 years (0.61%), 4–12 years (2.06%) and 12–18 years (2.56%).
• Researchers noted that the revision rate related to surgeon age showed: 28–41 years (1.42%), 41–50 years (2.96%), 50–65 years (2.74%); the surgeons’ surgery volume showed low (4.34%), medium (0.71%), and higher (1.02%).
• When subject to univariate and multivariate analysis, a significant relationship with the revision rate was shown by 4 diseases (otitis media with effusion, sinusitis, chronic pharyngitis, and sleep disorder).
• In addition, it was shown that the revision rate incorporating hospital locations, volumes and levels revealed no significant difference with each other.