TY - JOUR T1 - Comparison of the Duration of Sensory Block and Side Effects of Adding Different Doses of Intrathecal Fentanyl to Lidocaine 5% in Spinal Anesthesia TT - مقایسه مدت زمان بلوک حسی و عوارض ناشی از اضافه کردن دوزهای مختلف فنتانیل اینتراتکال به لیدوکائین 5% در بیحسی نخاعی JF - umsha JO - umsha VL - 19 IS - 1 UR - http://sjh.umsha.ac.ir/article-1-194-en.html Y1 - 2012 SP - 5 EP - 10 KW - Fentanyl KW - Lidocaine KW - Anesthesia KW - Spinal N2 - Introduction & Objective: Fentanyl has been used to improve quality and increase the duration of sensory block and analgesia after surgery in spinal anesthesia, but the effects of different doses are not still correctly specified. The aim of this study was to compare the duration of sensory block and side effects of adding different doses of intrathecal fentanyl to lidocaine 5% in spinal anesthesia. Materials & Methods: 140 adult patients undergoing elective surgery under spinal anesthesia were enrolled in a double blind placebo-controlled clinical trial. For spinal anesthesia in all patients, 100 mg of 5% intrathecal lidocaine was used and based on the drug added, patients were randomly assigned to one of four groups of control (2 ml distilled water), group two (25 microgram fentanyl), three (50 microgram fentanyl) and four (100 microgram fentanyl) groups. Duration of sensory block and the occurrence of complications were evaluated. Results: The groups were similar regarding demographic variables. (P>0.05) Mean duration of analgesia in the control group was 100.28±25.05 minutes and in group two was 112.28±18.4 minutes and in the third group was 135.28±10.63 minutes, and in group four, it was 140±12.42 minutes. Except for the differences of the control group with group two and those of group three with group four, the differences between all groups were statistically significant. (P M3 ER -