Two Bupivacaine Concentrations for Erector Spinae Plane Block in Percutaneous Nephrolithotomy

People who undergo percutaneous nephrolithotomy (PNL), a procedure used to remove kidney stones, often experience pain after surgery. An ultrasound-guided erector spinae plane block (ESPB) is commonly used to help reduce this pain. This study compares two different concentrations of bupivacaine, a local anesthetic medication, used during ESPB. Participants undergoing PNL will receive either 0.25% or 0.375% bupivacaine as part of their pain management. Researchers will compare pain scores, the need for additional pain medication, and changes in blood markers related to inflammation after surgery. The aim of the study is to determine whether one concentration provides better pain control or influences the inflammatory response differently after PNL.

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