RESUMEN
Objective:To explore the application research of isolated esophageal ventilation device in painless gastroscopy.Methods:A total of 200 patients who underwent painless gastroscopy requiring esophageal isolation were selected,and they were randomly divided into an observation group(isolated esophageal ventilation device + gastroscopy)and a control group(ordinary mask ventilation + gastroscopy),with 100 cases in each group.The heart rates,blood pressures,the numbers of breaths and blood oxygen saturation(SpO2)of 5 time points of two groups were recorded at entering time(T0),pre installing ventilation device(T1),post installing ventilation device(T2),during gastroscopy(T3)and post gastroscopy(T4).And then,the incidence of complications,occurrence of adverse events,total dosages of Propofol,operation times of gastroscopy,wake-up times and observation times of two groups were compared.Patients'satisfactions for the examination were evaluated by self-designed satisfaction survey and evaluation scale.Results:The differences of SpO2 between the two groups of patients at T1-T4 time points were statistically significant(t=23.150,t=14.720,t=17.900,t=18.520,P<0.05),respectively,and the difference of that between two groups at T0 time point was not statistically significant.There were no significant differences in blood pressure,heart rate and respiratory frequency between the two groups of patients at different time points.The total incidences of complications in the control group and the observation group were respectively 68.00％ and 13.00％.The total incidence of complications in the control group was significantly higher than that in the observation group,and the difference was statistically significant(x2=62.766,P<0.05).The total dosage of Propofol,time of gastroscopy examination and observation time of the observation group were significantly lower than those of the control group,and the differences were statistically significant(t=4.977,t=20.040,t=6.486,P<0.05),respectively.There was no statistically significant difference in the wake-up time between the two groups of patients.The satisfaction rates of the control group and observation group were respectively 79.00％ and 95.00％for painless gastroscopy,and the satisfaction rate of the control group was significantly lower than that of the observation group,and the difference was statistically significant(x2=11.317,P<0.05).Conclusion:In the application of the isolated esophageal ventilation device in painless gastroscopy,the SpO2 decrease of preventive operation can improve the oxygenation state of patients,and decrease the incidence rate of chocking cough and other adverse reactions,and reduce the occurrence of gastric reflux,and shorten the time of gastroscopy examination,and enhance the satisfaction of patients for examination,which has better safety.