Comparison of postoperative bleeding in pediatric tonsillectomy versus tonsillotomy

Objective: Tonsillar surgery is a common intervention for pediatric obstructive sleep apnea and recurrent tonsillitis. This study compared postoperative bleeding incidence and severity following tonsillotomy and tonsillectomy at a single medical center. Study design: A retrospective cohort study on 1984 pediatric patients (1–18 years old) who underwent surgery during 2004–2011 and 2019–2022. Tonsillectomy was performed during 2004–2011, while tonsillotomy was preferred for obstructive sleep apnea during 2019–2022. Tonsillectomy was performed using cold steel technique with complete removal of tonsillar tissue, while tonsillotomy was conducted using mono- or bipolar diathermy, preserving minimal tissue on the tonsillar capsule. Setting: Shaare-Zedek Medical Center, Faculty of Medicine, Hebrew University. Methods: Outcome measures included postoperative bleeding incidence and severity, surgery duration, hospitalization length, and readmission. Results: Tonsillotomy was conducted on 958 (48.3 %) patients, and tonsillectomy was performed on 1026 (51.7 %) patients. Obstructive sleep apnea was the only indication in 1553 (78.3 %) patients. Overall bleeding rate was lower following tonsillotomy (3.9 %) than tonsillectomy (9.5 %) (p < 0.001). Significantly more patients required surgical bleeding control post-tonsillectomy than post-tonsillotomy: 39 (3.7 %) vs. 5 (0.5 %), respectively (p < 0.001). Tonsillectomy resulted in higher readmission rates (11.8 % vs 6.1 %, p < 0.001), more blood transfusions (3 vs. 0), and higher postoperative hemoglobin diminution (1.57 ± 2 vs. 0.94 ± 1 g/dL, p = 0.035). The duration of the surgery was shorter for tonsillotomy (24.7 vs 26.5 min, p = 0.012). Tonsillectomy sustained higher bleeding rates for obstructive sleep apnea patients (7.0 % vs 3.9 %, p = 0.006). For recurrent tonsillitis patients, bleeding rates did not vary between year groups. Older age and tonsillectomy were the most significant risk factors for postoperative bleeding. Conclusion: Among children undergoing tonsillar surgery for obstructive sleep apnea, tonsillotomy was associated with a safer postoperative bleeding profile, reduced bleeding severity, and fewer readmissions compared to tonsillectomy.