Force Metrics During the Boyle–Davis Gag in Children Undergoing Adenotonsillectomy

Background: In adults, the forces generated during Boyle–Davis Gag suspension correlate with postoperative pain, but no data are available in pediatrics. This study investigates the force metrics and postoperative opioid consumption, pain, emergence delirium (ED), and hypoactive delirium in children. Methods: Children undergoing elective partial or total adenotonsillectomy or adenoidectomy were enrolled. Intraoperative maximum and average forces, suspension time, total impulse (area under the curve of force vs. time), and postoperative opioid consumption, pain, ED, and hypoactive delirium were assessed. Results: Data from 43 children were analyzed. Force metrics were not associated with postoperative opioid consumption, ED, or hypoactive delirium. Compared to no pain, total impulse decreased with mild (mean difference 2.3 kN·s; 95% CI, 3.8 to 4.2; p = 0.02), moderate (mean difference 2.8 kN·s; 95% CI, 5.4 to 3.9; p = 0.011), and severe pain (mean difference 2.3 kN·s; 95% CI, 7.6 to 3.9; p = 0.005). Suspension time was negatively correlated with pain score (r = −0.32, p = 0.041). Conclusions: The force metrics are low and not associated with opioid consumption, ED, or hypoactive delirium. Suspension correlates weakly with postoperative pain in children.