Erector Spinae Plane Block Versus Thoracic Paravertebral Block in Laparoscopic Cholecystectomy

10 mL of 0.375% bupivacaine is injected on each side between the deep fascia of the erector spinae muscle and the transverse process. Additionally, tramadol is administered via intravenous patient-controlled analgesia.

10 mL of 0.375% bupivacaine is injected on each side between the superior costotransverse ligament and the pleura.

Tramadol is administered via intravenous patient-controlled analgesia.