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Procedural discomfort is experienced by patients during the establishment of subarachnoid block even after good preoperative counseling and adequate premedication. To enhance comfort, procedural sedation that would provide good analgesia, faster recovery, and amnesia is necessary.

saudi journal of anaesthesia

Comparison of efficacy of three subanesthetic doses of ketamine in allaying procedural discomfort during establishment of subarachnoid block: A randomized double-blind trial