Comparison of the Efficacy of Bupivacaine and Ropivacaine in Pericapsular Nervegroup Block in Positioning For Spinal Anaesthesia and Perioperative Analgesia

Introduction: The pericapsular nerve group block (PENG) is a versatile regional
anaesthesia technique described in 2018, developed primarily in total hip arthroplasties
(THA) for postoperative analgesia with motor sparing benefits. The block is thought to
provide more complete analgesia to the hip by depositing local anaesthetic within the
myofascial plane of the psoas muscle and superior pubic ramus. Objectives: To
compare the efficacy of 0.25 % bupivacaine and 0.2% ropivacaine in Pericapsular
nerve group block in positioning for Spinal Anaesthesia and also perioperative
analgesia. Methodology: The present RCT was carried out in patients undergoing
unilateral surgeries in and around the hip joint at Navodaya Medical College Hospital,
Raichur from January 2021 and June 2022 with 2 groups, one group with 0.25 %
bupivacaine and other group with 0.2% ropivacaine with 30 patients in each
group. Results: Mean age of Group B and Group R was 50.50±9.72 and 52.50±7.70
years. Mean VAS at rest in Group B and Group R 10 minutes after block was
4.57±1.55 and 2.47±1.76 respectively (p<0.05). Mean VAS at rest in Group B and
Group R 20 minutes after block was 2.07±1.23 and 1.33±0.84 respectively (p<0.05).
Mean VAS at movement at 10, 20 and 30 minutes in Group B and Group R was
(5.57±1.72 vs 3.63±2.11), (2.83±1.18 vs 1.77±0.90) and (2.40±0.93 vs 1.47±0.78).
Mean duration of analgesia was 8.03±2.19 vs 9.87±3.06 minutes in Group B and R
respectively. Conclusion: In this study, Ropivacaine group has given better results than
Bupivacaine group in terms of Lower VAS scores at rest and movement in the initial
30 minutes after block administration Duration of action. The perioperative analgesia
in terms of VAS scorefrom 30 minutes to time of rescue analgesia were comparable in
both groups with no statistically significant difference