Effects of dexmedetomidine on stress response and postoperative recovery in children undergoing laparoscopic surgery / 中国基层医药

ABSTRACT

Objective:To investigate the effects of dexmedetomidine on stress response and postoperative recovery in children undergoing laparoscopic surgery.Methods:A total of 200 pediatric patients undergoing laparoscopic surgery who received treatment in Jinhua Maternal and Child Health Hospital from May 2021 to December 2022 were included in this prospective randomized controlled study. These patients were randomly divided into Group A and Group B. Group A ( n = 100) received an intravenous infusion of physiological saline before anesthesia induction, while Group B ( n = 100) received an intravenous infusion of 0.5 μg/kg dexmedetomidine, and the other anesthesia methods were the same as the Group A. Vital signs (mean arterial pressure, heart rate), stress reactions (norepinephrine, cortisol, blood glucose), postoperative recovery status (eye-opening time, time to orientation, extubation time), the occurrence of restlessness (restlessness score, duration of restlessness), and adverse reactions (nausea, vomiting, tachycardia, laryngeal spasm, respiratory depression) were compared between different time points [before infusion (T0), 10 minutes after infusion (T1), postoperative wakefulness (T2), and 5 minutes after extubation (T3)]. Results:At T1, T2, T3, the mean arterial pressure and heart rate in Group B [(81.53 ± 7.45) mmHg (1 mmHg = 0.133 kPa), (78.32 ± 8.23) mmHg, (85.73 ± 7.28) mmHg, (109.43 ± 7.78) beats/minute, (106.22 ± 7.25) beats/minute, and (112.34 ± 6.74) beats/minute] were significantly higher than those in Group A [(76.39 ± 7.21) mmHg, (73.54 ± 7.41) mmHg, (80.34 ± 6.81) mmHg, (102.58 ± 7.34) beats/minute, (99.14 ± 6.90) beats/minute, (107.76 ± 6.38) beats/minute, t = 4.95, 4.31, 5.40, 6.40, 7.07, 4.93, all P < 0.001]. At 1 day after surgery, the levels of norepinephrine, cortisol, and blood glucose in Group B [(352.73 ± 60.32) ng/L, (310.85 ± 67.61) nmol/L, (4.89 ± 0.97) mmol/L ] were significantly lower than those in Group A [(427.82 ± 72.95) ng/L, (375.33 ± 74.97) nmol/L, (5.53 ± 1.10) mmol/L, t = 7.93, 6.38, 4.36, P < 0.001]. The time to eye-opening, time to orientation, and time to extubation in Group B were (10.06 ± 1.93) minutes, (10.54 ± 2.10) minutes, and (11.92 ± 2.06) minutes, respectively, which were significantly shorter than (11.88 ± 2.14) minutes, (12.43 ± 2.65) minutes, and (14.46 ± 2.43) minutes ( t = 6.31, 5.59, 7.97, all P < 0.001). The pediatric anesthesia emergence delirium score in Group B was (8.19 ± 2.10) points, which was significantly lower than (11.56 ± 2.62) points in Group A ( t = 10.03, P < 0.001). The duration of restlessness in Group A was (7.41 ± 1.27) minutes, which was significantly shorter than (9.33 ± 1.65) minutes in Group B ( t = 9.22, P < 0.001). There was no significant difference in the incidence of adverse reactions between Group A and Group B [8.00% (8/100) vs. 6.00% (6/100), χ2 = 0.30, P > 0.05]. Conclusion:Dexmedetomidine has a good application effect in pediatric laparoscopic surgery. It can stabilize the vital signs of children, reduce stress reactions, facilitate postoperative recovery, and reduce restlessness and adverse reactions.