The effect-site concentration of remifentanil blunting endotracheal intubation responses in elderly patients during anesthesia induction with etomidate: a dose-exploration study.

Purpose: Laryngoscopy and endotracheal intubation are known to increase activity of the sympathetic nervous system, and are usually associated with perioperative hypertension, cardiac arrhythmia, and tachycardia. The aim of this study was to determine the effect-site concentrations of remifentanil to inhibit the tracheal intubation response during etomidate anesthesia in elderly patients.

Methods: American Society of Anesthesiologists physical status I-III patients aged 65 or older and scheduled for general anesthesia for elective surgery were enrolled in the study.

Efficacy of Remifentanil Intravenous Patient-Controlled Analgesia in Singleton Parturients During the Second Stage of Labor: A Single-Arm, Prospective Study.

Background: Worrying about increasing the use of instrument-assisted delivery and prolonging the process, midwives in our institution tended to persuade the parturients who had entered the second stage of labor, to give up neuraxial analgesia. Remifentanil seemed to be suitable for this situation due to its advantages of fast onset and metabolism. We designed a single arm and prospective study to explore the analgesic effect and safety of remifentanil intravenous patient-controlled analgesia (PCA) in singleton parturients during the second stage of labor.

Comparative evaluation of the bispectral index (BIS) and BISpro during propofol anaesthesia.

Objective: To compare the accuracy, correlation and agreement between the bispectral index (BIS) and BISpro during propofol anaesthesia.

Methods: The BIS, BISpro, heart rate, target-concentration of propofol and Observer's Assessment of Alertness and Sedation (OAA/S) score were recorded every 30 s in female patients scheduled for hysteroscopic surgery. Propofol anaesthesia was induced by an initial target-controlled concentration (1.