Effect of External Oblique Intercostal Block Versus Paravertebral Block on Postoperative Pain and Complications in Open Nephrectomy Patients

Used for regional anesthesia during nephrectomy procedure (e.g., paravertebral or external oblique intercostal block)

Used for postoperative pain control via PCA device

Used as part of postoperative multimodal analgesia

Administered for postoperative pain management