Comparing spinal anesthesia approaches for transurethral lithotripsy in patients with proximal ureteral stones: A randomized clinical trial of bupivacaine alone versus bupivacaine with fentanyl.
Khoshrang H, Damavand RS, Nasseh H, Tavakoli AA, Esmaeili S, Ghaffari M, Shakiba M. Comparing spinal anesthesia approaches for transurethral lithotripsy in patients with proximal ureteral stones: A randomized clinical trial of bupivacaine alone versus bupivacaine with fentanyl. J Med Life. 2023 Oct; 16(10):1508-1513.