Introduction: Stress factors in the operation room and block level mismatch with surgical area may contribute to discomfort, anxiety and restlessness in patients under spinal anaesthesia. Sedation is a valuable tool to provide general comfort for the patient. It usually provides freedom from specific discomfort and can impose some amount of amnesia for the block procedure and surgical procedure. Thus, legal use of sedation can make these surgeries under spinal anaesthesia more comfortable for the patient, the surgeon and the anaesthetist. Therefore, it can enhance the patient's acceptance of regional anaesthetic technique. Spinal anaesthesia itself can impart some sedative effects.Spinal subarachnoid block is one of the most versatile regional anaesthetic techniques available these days. Regional anaesthesia usually offers several advantages over general anaesthesia—blunts stress response to surgery, decreases intraoperative blood loss, lowers the incidence of postoperative thromboembolic events and provides analgesia in early postoperative period. Subarachnoid block provides profound anaesthesia for patients undergoing infraumbilical surgery