Comparison of the effect of fentanyl and buprenorphine as an adjuvant to hyperbaric bupivacaine 0.5% in terms of hemodynamic parameters in infraumbilical surgery

Upon the acquisition of CTRI registration, IRC, and IEC approval, participants will be given a description of the procedure and asked for their approval. This study will include participants undergoing elective infraumbilical surgery. Once in the operating room, the patient is connected to all the monitors. Under aseptic precautions, the patient is positioned in lateral recumbent position, the local anaesthetic drug hyperbaric bupivacaine 0.5% is taken. As fentanyl and buprenorphine are routinely used as an adjuvant during the administration of spinal anaesthesia, in this study we will be using it as per the discretion of the anaesthesiologist. One of the two adjuvant will be chosen as an additive to the local anesthetic, and the anaesthesiologist will administer spinal anaesthesia. After spinal anaesthesia, I will be monitoring the heart rate and blood pressure for every 2.5 minutes until the end of 30 minutes, and after 30 minutes until 1 hour every 5 minutes. If any itching or pruritus is present throughout this period, it is noted. The time from the spinal anaesthesia will be given until the patient is micturated will be noted. The data will be statistically analyzed.