Application of Narcotrend monitor in propofol-laryngeal mask total intravenous anesthesia of gynecilogical surgery / 肿瘤研究与临床

ABSTRACT

Objective To evaluate the predictive effects of Narcotrend(NT) monitor on laryngeal mask intubation and consciousness recovery in propofol-laryngeal mask total intravenous anesthesia of gynecilogical surgery.Methods Thirty ASA I patients undergoing elective gynecilogical surgery under general anesthesia with laryngeal mask intubation were anesthetized with propofol by target-controlled infusion (TCI).NT monitor was used to monitor the anesthesia depth.The ventilation was used on the closed circuit breathing mode of ZEUS anesthesia machine.The values of NT stage (NTS),NT index (NTI),the effect compartment concentration (Ce) and hemodynamic parameters were recorded during the time of sleeping,laryngeal mask intubation,propofol stopping pumping,recovery of spontaneous respiration and eyes opening.The incidence rate of intraoperative awareness was recorded.Results The NTI (77±23,30±9) (Z =5.561,P =0.001),Ce [(1.1±0.4) μg/ml vs (2.2±0.4) μg/ml] (Z=6.38,P=0.006),MAP [(92±14) mm Hg (1 mm Hg =0.133 kPa)vs (83±14) mm Hg] (t =2.490,P =0.016) and HR [(74±15) bpm vs (65±10) bpm] (t =2.688,P =0.009) of the time of intubation were significantly decreased compared to the time of sleeping.The NTI (37±7 vs 71±14)of the time of recovery of spontaneous respiration was significantly increased compared to the time of propofol stopping pumping (Z =6.34,P =0.005).The NTI (37±7 vs 83±13) (Z =6.668,P =0.003),Ce [(3.1±0.4) μg/ml vs (1.6±0.2) μg/ml] (Z =6.414,P =0.002) and HR[(59±7) bpm vs (64±8) bpm] (t =-2.825,P =0.006) of the time of eyes opening were statistically significant compared to the time of propofol stopping pumping.None of patients experienced intraoperative awareness.Conclusion NT monitor can effectively guide the intubation and extubation of laryngeal mask in total intravenous anesthesia of gynecilogical surgery.