Painless injection of propofol: pretreatment with ketamine vs thiopental, meperidine, and lidocaine.

Propofol, a commonly used anesthetic, often causes pain on injection. Several methods have been described to reduce this pain, however, complete inhibition has not been achieved. Our randomized, placebo controlled, double blind study has been conducted to compare the analgesic efficacy of iv pretreatment of ketamine, meperidine, thiopental, lidocaine to minimize the injection pain of propofol.

Comparison of hyperbaric ropivacaine and hyperbaric bupivacaine in unilateral spinal anaesthesia.

Background: To evaluate the clinical efficacy and safety of unilateral spinal anaesthesia with 0.66% hyperbaric ropivacaine compared with 0.5% hyperbaric bupivacaine for arthroscopic knee surgery.

Comparison of ropivacaine and bupivacaine for intrathecal anesthesia during outpatient arthroscopic surgery.

Study Objective: To compare the effects of intrathecal ropivacaine with bupivacaine in a dose ratio of 2:1 for outpatient arthroscopic knee surgery.

Design: Randomized, single-blinded study.

Setting: University-affiliated hospital.

Does dexamethasone improve the quality of intravenous regional anesthesia and analgesia? A randomized, controlled clinical study.

We investigated the anesthetic and analgesic effectiveness of adding dexamethasone to lidocaine for IV regional anesthesia (IVRA). Seventy-five patients undergoing ambulatory hand surgery were randomly assigned to one of three groups: group L received 3 mg/kg lidocaine, group LD received 3 mg/kg lidocaine + 8 mg dexamethasone, and group LDc received 3 mg/kg lidocaine for IVRA and 8 mg dexamethasone IV to the nonsurgical arm. IVRA was established using 40 mL of a solution.