Application of laryngeal mask airway anesthesia combined with sacral canal block in pediatric surgery

Abstract

Objective To observe differences between the application of laryngeal mask anesthesia combined with sacral canal block and single intratracheal anesthesia in African pediatric surgery and provide references for child anaesthesia. Methods Sixty 4-6 year-old children for lower abdominal or lower limb surgerywere randomly divided into two groups(n=30): laryngeal mask airway anaesthesia combined with sacral canal block group(group A) and single intratracheal anaesthesia group(group B). MAP, HR and SpO2 were recorded before induction of anaesthesia(T0), before and after intubation of laryngeal mask airway or tracheal tube (T1, T2) and after removal of laryngeal mask airway or tracheal tube(T3). The waking-up time, VAS pain scores and adverse reaction were recorded after surgery. Results There were no significant differences in MAP, HR and SpO2 between the two groups at T0 and T1 (P>0.05). The MAP and HR [(68±10) mmHg(1 mmHg=0.133 kPa), (108±17) bpm] values in group A were significantly lower than the MAP and HR [(91±8) mmHg, (139±18) bpm] values in group B at T2(P<0.05). The MAP and HR [(67±9) mmHg, (121±16) bpm] values in the group A were also significantly lower than the MAP and HR [(85 ± 9) mmHg, (141 ± 17) bpm] values in the group B at T3(P<0.05). The postoperative VAS values (1.5±0.5) in groups A were significantly lower than values (6.5±1.5) in the group B (P<0.05). The waking-up time [(5.8±2.4) min] in group A was significantly shorter than the time [(12.2±2.8) min] in group B (P<0.05). There are only 4 cases of postoperative agitation in group A which was significantly lower than that in group B (P<0.05). The frequencies of postoperative cry and cough in group A were significantly lower than that in group B. Conclusions The general anesthesia via laryngeal mask airway combined with sacral canal block in children during the induction and the waking-up time guaranteed more stable hemodynamics and significantly reduce postoperative pain, the waking-up time significantly shorten, significantly reduce the incidence of postoperative mania ,so it is an more ideal anesthesia methed in lower abdominal or lower limb surgery. Key words: Laryngeal mask airway; Anesthesia, general; Sacral canal block; African child