Ventilation effect of I-gel laryngeal mask used in endoscopic thyroid surgery under general anesthesia / 天津医药

ABSTRACT

Objective To observe the ventilation effect of I-gel laryngeal mask in endoscopic thyroid surgery under general anesthesia. Methods A total of 60 cases of endoscopic thyroid surgery under general anesthesia, were randomly di?vided into 3 groups (n=20)the group that patients used endotracheal intubation (Group Q);the group that patients employed Supreme laryngeal mask (Group S);the group that patients wore I-gel laryngeal mask (Group I). Success rate of insertion, du?ration of insertion, endotracheal pressure of Group S and Group I worerecored, and fiberoptic bronchoscopy was performed in Group S and I to evaluate the position of laryngeal mask. Mean arterial pressure(MAP), heart rate(HR), pulse oxygen satura?tion (SpO2) at time points of before insertion (T0), 1 min after insertion (T1), 3 min after insertion (T2), before the establishment of CO2 operating space (T3), 30 min after the establishment of CO2 operating space (T4), 10 min after the resection of speci?mens (T5), 1 min before removal of laryngeal mask (T6) and 1 min after the removal of laryngeal mask (T7) were recorded and the end-tidal carbon dioxide pressure [ p(CO2) ]and peak airway pressure (Ppeak) form T1 to T5. were also recorded. Occur?rence of nausea and vomiting, sore throat and other adverse reactions after removal of laryngeal mask were also noted. Re?sults The successful rate of insertion was not significant different among all three groups. Compared with Group Q, inser?tion time was significantly shorter in Group I and S (P<0.05). Endotracheal pressure and fiberoptic bronchoscopy score are not statistically different between Group S and I. Compared with Group Q, MAP and HR in T1, T6 and T7 were significantly lower in Group S and I (P<0.05). SpO2,p(CO2) and Ppeak show no statistical difference between three groups. Compared with Group S and Q, the occurrence of sore throat, painful swallowing and bleeding which is indicated by the appearance of blood in laryngeal were all significantly lower in Group I (P<0.05). Conclusion Both I-gel laryngeal mask and Supreme laryngeal mask can be used safely and effectively in airway management of endoscopic thyroid surgery patients while I-gel laryngeal mask is less hurting and more comfortable than Supreme laryngeal mask.