Objective To observe the application effect of Manujet Ⅲ device combined with im-proved nasopharynx oxygen tube in painless bronchoscopy.Methods A total of 120 patients with painless bronchoscopy were selected as the research objects,and they were randomly divided into ob-servation group(treated with routine continuous nasopharynx oxygen supply and Manujet Ⅲ combined with improved nasopharynx oxygen tube)and control group(treated with routine continuous nasophar-ynx oxygen supply),with 60 cases in each group.Mean arterial pressure(MAP),heart rate(HR),the saturation of peripheral oxygen(SpO2),induction time,microscopic examination time,awakening time,success rate of examination by one time,patient's satisfaction degree,physician's satisfaction degree and incidence of adverse reactions were compared between two groups.Results Repeated measurement analysis of variance showed that there were significant differences in the time,inter-group and time to group interactions of MAP,HR and SpO2 between the two groups(P＜0.05);at the time points of 5 minutes of microscopic examination,10 minutes of microscopic examination and after micro-scopic examination,the MAP in the observation group was significantly lower than that in the control group,while HR and SpO2 were significantly higher than those in the control group(P＜0.05).There was no significant difference in induction time between the two groups(P＞0.05);in the observation group,the microscopic examination time and awakening time were significantly shorter than those in the control group,while the success rate of examination by one time was significantly higher than that in the control group(P＜0.05).The patient's satisfaction degree and physician's satisfaction degree in the observation group were significantly higher than those in the control group(P＜0.05).The incidence of adverse reactions in the observation group was 5.00％,which was significantly lower than 18.33％in the control group(P＜0.05).Conclusion The combination of routine continuous nasopharynx oxygen supply and ManujetⅢ combined with improved nasopharynx oxygen tube for su-praglottal manual assisted jet ventilation is beneficial for providing sufficient oxygen supply and re-ducing the incidence of hypoxemia.

Objective To observe the application effect of Manujet Ⅲ device combined with im-proved nasopharynx oxygen tube in painless bronchoscopy.Methods A total of 120 patients with painless bronchoscopy were selected as the research objects,and they were randomly divided into ob-servation group(treated with routine continuous nasopharynx oxygen supply and Manujet Ⅲ combined with improved nasopharynx oxygen tube)and control group(treated with routine continuous nasophar-ynx oxygen supply),with 60 cases in each group.Mean arterial pressure(MAP),heart rate(HR),the saturation of peripheral oxygen(SpO2),induction time,microscopic examination time,awakening time,success rate of examination by one time,patient's satisfaction degree,physician's satisfaction degree and incidence of adverse reactions were compared between two groups.Results Repeated measurement analysis of variance showed that there were significant differences in the time,inter-group and time to group interactions of MAP,HR and SpO2 between the two groups(P＜0.05);at the time points of 5 minutes of microscopic examination,10 minutes of microscopic examination and after micro-scopic examination,the MAP in the observation group was significantly lower than that in the control group,while HR and SpO2 were significantly higher than those in the control group(P＜0.05).There was no significant difference in induction time between the two groups(P＞0.05);in the observation group,the microscopic examination time and awakening time were significantly shorter than those in the control group,while the success rate of examination by one time was significantly higher than that in the control group(P＜0.05).The patient's satisfaction degree and physician's satisfaction degree in the observation group were significantly higher than those in the control group(P＜0.05).The incidence of adverse reactions in the observation group was 5.00％,which was significantly lower than 18.33％in the control group(P＜0.05).Conclusion The combination of routine continuous nasopharynx oxygen supply and ManujetⅢ combined with improved nasopharynx oxygen tube for su-praglottal manual assisted jet ventilation is beneficial for providing sufficient oxygen supply and re-ducing the incidence of hypoxemia.