Keywords : unilateral spinal anaesthesia
A comparative study of unilateral and conventional spinal anaesthesia by using 0.5% hyperbaric bupivacaine in lower limb orthopaedic surgery
European Journal of Molecular & Clinical Medicine,
2022, Volume 9, Issue 7, Pages 2945-2951
Background and Aims: Unilateral spinal anaesthesia is used for lower limb surgeries, as it offers many clinical advantages, including reducing the haemodynamic effects of spinal anaesthesia. The study was done to compare intra-operative haemodynamic responses and duration of analgesia between unilateral and conventional spinal anaesthesia.
Methods: Nighty patients of either sex, between 18 and 60 years of age, belonging to ASA grade I and II physical status scheduled for elective lower limb orthopaedic surgery were randomly allocated into two equal groups. Group A (n=45) received 7.5 mg of 0.5% hyperbaric bupivacaine for unilateral spinal anaesthesia and Group B(n=45) received 12.5 mg hyperbaric bupivacaine for conventional spinal anaesthesia. They were evaluated for haemodynamic parameters including heart rate, Mean arterial pressure (MAP) and duration of postoperative analgesia. Visual Analogue Scale (VAS) was used to assess postoperative analgesia.Incidences of complications of spinal anaesthesia were also recorded.
Results: The MAP at 5, 10, 15, 20,30 minutes were significantly lower in conventional group than in unilateral group. The duration of analgesia was 419.32 ± 9.43 min in unilateral group and 390±9.64 min in conventional group. Incidencesof hypotension, bradycardia, nausea, vomiting and postoperative headache were significantly lower in unilateral group than in conventional group.
Conclusion: The unilateral Spinal anaesthesia provides better haemodynamicstability and prolonged duration of analgesiawhen compared with conventional anaesthesia.