Benefit and risk of intrathecal morphine without local anaesthetic in patients undergoing major surgery: meta-analysis of randomized trials
Keywords: عوارض، افسردگی تنفسی; anaesthetic techniques, subarachnoid; analgesia, postoperative; analgesic techniques, subarachnoid; analgesics opioid, morphine; complications, respiratory depression; pain, postoperative; meta-analysis;