Effects on heamodynamics and postoperative analgesic requirement after major abdominal surgeries: comparison between continuous epidural infusion of 0.2% ropivacaine and 0.125% bupivacaine. Birdem Med J [Internet]. 2024 Jan. 29 [cited 2026 Jun. 23];14(1):23-30. Available from: https://www.banglajol.info/index.php/BIRDEM/article/view/71015