Analgesic Efficacy of Ropivacaine Infiltration in Puncture Site of Mini Percutaneoius Nephrolithotomy Tract

To compare the mean postoperative pain score in patients with ropivacaine infiltration in the access tract with placebo in patients undergoing mini percutaneous nephrolithotomy. Methods: Total 82 adult patients of either gender undergoing mini percutaneous nephrolithotomy, between 9 and 63 years of age were included in the study. The patients were randomly allocated into two groups by lottery method. Patients in group A were given 20ml of 0.25% ropivacaine in the access tract while patients in group B were given 20ml of normal saline as placebo at the beginning of surgery at the nephrostomy site. Post operatively all patients were carefully followed at 2, 4 and finally at 6 hours. All patients were examined to determine the pain scores at the mini PCNL    puncture site using visual analogue scale. Results: The mean age of patients in group A was 40.60 ± 11.62 years and in group B was 40.26 ± 13.15 years. Out of 82 patients 43 (51.43%) patents were male and 39 (48.57%) were female with male to female ratio of 1.1:1. Mean postoperative pain score in patients with preoperative ropivacaine infiltration (group A) of nephrostomy tract was 3.2 ± 1.2 and in placebo (group B) was 5.60 ± 1.64 with p-value of 0.0001. Conclusion: This study concluded that mean postoperative pain score of  ropivacaine infiltration in the PCNL tract  is less than placebo in patients undergoing mini percutaneous nephrolithotomy.