Turk Anesteziyoloji ve Reanimasyon, cilt.28, sa.6, ss.322-326, 2000 (Scopus)
The purpose of this study was to evaluate the feasibility and advantages or disadvantages of patient-controlled sedation (PCS) compared with sedation administered by the anaesthesiologist during cataract surgery using retrobulbar block. Forty-five patients were divided randomly into three equal groups patients in group PCS(Mid-Fen) received a self-administered mixture of midazolam (0.5 mg) and fentanyl (25 μg) in increments using PCA infusion pump, patients in group PCS(Prop) received with a similar pump propofol (0.3 mg/kg) and patients in the anaesthesiologists group received 0.5-1.0 mg IV midazolam and 25-50 μg IV fentanyl in increments administered by the anaesthesiologists to achieve intraoperative sedation. Demographics of the patients, duration of surgery, doses of midazolam and fentanyl administered in a given period of time, and the level of preoperative anxiety were similar in all groups. Patients in the self-administered group, however, were more satisfied than those in the anesthesiologist-controlled sedation group. This could be to a positive psychological effect produced by allowing patients to feel themselves some control over their situation. The findings of this study indicate that patient-controlled sedation using a combination of midazolam and fentanyl or propofol is a safe and effective technique that provides intraoperative sedation ranked better by patients than that provided by anesthesiologists.