Anaesthesia is a medical field which encompasses around the safety and well- being of a patient scheduled for surgery. Therefore recent advances and researches focus on trials based on drugs and anaesthetic techniques in favour of patient care and comfort. With this perspective, Ropivacaine is a local anaesthetic agent under constant trial as it has shown to result in promising results when used in place of bupivacaine in terms of hemodynamic stability in spinal anaesthesia. The pure S-enantiomer Ropivacaine, is associated with decreased cardiotoxicity as compared to Bupivacaine. Bupivacaine is 50:50 racemic mixture of R and S- enantiomer. The undesired cardio toxic property is due to the R isomer which has more affinity for voltage gated sodium channels. Ropivacaine has lower lipid solubility, it penetrates to a lesser extent into the large myelinated nerve fibres resulting in less motor blockade than Bupivacaine  thus rendering it to be more safer drug. Initially, the effects of isobaric Ropivacaine along with various adjuvants for example fentanyl was used intrathecally to compare with hyperbaric bupivacaine in lower limb surgeries and various url-surgeries requiring subarachnoid block. with time various authors started to experiment with the basicity of the drug by pairing with dextrose in order to achieve an efficacy close to hyperbaric Bupivacaine. 

This study will be conducted at Netaji Subhash Chandra Bose superspeciality medical college Jabalpur after approval. This prospective, randomised, double blind study will enrol 80 patients of ASA grade 1 & , fulfilling the inclusion criteria as mentioned earlier, after written and informed consent from each participant. they will be randomly divided into two groups of 40 each.

In the operation theater a large bore IV access will be secured and 0.9% normal saline will be started. 5 lead ECG, Non invasive blood pressure, SpO2  monitoring will be recorded as baseline thereafter monitored continuously (except NIBP at every 5 minute interval). 

Spinal anaesthesia will be administered using 25 gauge spinal needle (Quincke) and 4ml of trial drug or control drug (unknown to participant and investigator).

Once spinal anaesthesia is delivered, patient is immediately positioned supine and hemodynamics  including mean arterial pressure , blood pressure and heart rate  will be recorded every 2 minutes for first 10 minutes, every 10 minutes till the end of surgery. 

Post operatively haemodynamic parameters will be recorded every hour for 4 hours, thereafter every 4 hours till 24 hours from time of induction of anaesthesia.