Abstract:Objective To explore the comfort and safety of different doses of Fentanyl combined with Midazolam in bronchoscopy.Methods 136 inpatients required electronic bronchoscopy were divided into test group (101 cases) and control group (35 cases). The test group was divided into three subgroups, namely Midazolam alone Group (A group), 25 μg Fentanyl combined with Midazolam group (B group), 50 μg Fentanyl combined with Midazolam group (C group). The sedation scores, cough degree, heart rate, systolic and diastolic blood pressure, and changes in finger pulse oxygen values of the four groups of patients before and during the bronchoscopy were recorded.Results Compared with the control group, group A patients had significant differences in sedation score, heart rate, blood pressure, finger pulse oxygen (P < 0.05), but there was no significant difference in the degree of cough between the two groups (P > 0.05); Group B and Group C were significant differences in the above indicators between the two groups of patients and the control group (P < 0.05); At the same time, group B compared with group A, group C compared group A in terms of HR, SBP, DBP and SpO2, the difference was statistically significant (P < 0.05). There was a statistically significant difference in cough symptoms between group C and group A (P < 0.05); Group C and group B were also statistically difference in heart rate, systolic blood pressure and diastolic blood pressure (P < 0.05).Conclusion The comfort and safety of using Fentanyl combined with Midazolam for patients underwent bronchoscopy were significantly better than that of Midazolam alone, and it did not add additional side-effects;especially, 50 μg Fentanyl combined with Midazolam were better than 25 μg Fentanyl.