title: Dexmedetomidine-fentanyl versus propofol-fentanyl in flexible bronchoscopy: A randomized study.
abstract: The aim of the present study was to evaluate the effect of a combination of dexmedetomidine and fentanyl on peripheral oxygen saturation (SpO2) and hemodynamic stability in patients undergoing flexible bronchoscopy. One hundred patients undergoing elective flexible bronchoscopy were randomized into either a propofol-fentanyl group (PF group; n=50) or a dexmedetomidine-fentanyl group (DF group; n=50). SpO2values, heart rate (HR), systolic and diastolic blood pressure (SBP and DBP), patients' cough scores and discomfort scores as determined by patients and bronchoscopists, levels of sedation, number of times that additional lidocaine was required, elapsed time until recovery, and adverse events were recorded. The mean SpO2values in the DF group were significantly higher than those in the PF group (P<0.01), and HR, SBP and DBP were significantly lower in the DF group than in the PF group (P<0.05). There were no statistically significant differences between the two groups in terms of cough scores or discomfort scores, sedation levels, or number of times that additional lidocaine was required (P>0.05). Elapsed time until recovery in the DF group was significantly longer than in the PF group (P=0.002). The incidence of hypoxemia was significantly lower in the DF group than in the PF group (P=0.027), but the incidence of bradycardia was significantly higher in the DF group than in the PF group (P=0.037). Dexmedetomidine-fentanyl was superior to propofol-fentanyl in providing satisfactory SpO2. Furthermore, dexmedetomidine-fentanyl attenuated hemodynamic responses during bronchoscopy and maintained hemodynamic stability in the early stage of the procedure.
authors.affiliation: Department of Anesthesiology, Second Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450014, P.R. China.
authors.forename: Feng
authors.initials: F
authors.lastname: Yuan
authors.affiliation: Department of Anesthesiology, Second Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450014, P.R. China.
authors.forename: Hongguang
authors.initials: H
authors.lastname: Fu
authors.affiliation: Department of Anesthesiology, Second Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450014, P.R. China.
authors.forename: Pengju
authors.initials: P
authors.lastname: Yang
authors.affiliation: Department of Anesthesiology, Second Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450014, P.R. China.
authors.forename: Kai
authors.initials: K
authors.lastname: Sun
authors.affiliation: Department of Anesthesiology, Second Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450014, P.R. China.
authors.forename: Shubiao
authors.initials: S
authors.lastname: Wu
authors.affiliation: Department of Anesthesiology, Second Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450014, P.R. China.
authors.forename: Miaomiao
authors.initials: M
authors.lastname: Lv
authors.affiliation: Department of Anesthesiology, Second Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450014, P.R. China.
authors.forename: Zhenzhen
authors.initials: Z
authors.lastname: Dong
authors.affiliation: Department of Anesthesiology, Second Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450014, P.R. China.
authors.forename: Tieli
authors.initials: T
authors.lastname: Dong
keywords: dexmedetomidine-fentanyl; flexible bronchoscopy; hemodynamic stability; peripheral oxygen saturation; propofol-fentanyl; sedation