The Effects of Erector Spinae Plane Block on Bariatric Surgery.

"Patients will receive standard multimodal analgesia comprising paracetamol, tenoxicam, and tramadol.~The pain intensity during rest and motion will be evaluated with the 0-10 Numeric Rating Scale (NRS). NRS scores for pain and postoperative opioid consumption will be evaluated at 15th and 30th minutes, 1st, 2nd, 6th, 12th, 24th hours, 2nd day."

Patients in the ESPB group will be placed in a sitting position. A convex probe ultrasound transducer will be placed in a longitudinal parasagittal orientation approximately 3 cm lateral to the spinous process. Local anesthetic (20 ml 0.25% bupivacaine) will be injected bilaterally into the fascial plane on the deep face of the erector spinae muscle. Standard perioperative and postoperative analgesia protocol will be given and postoperative pain levels will be determined by Numerical Rating Scale (NRS). NRS scores for pain and postoperative opioid consumption will be evaluated at 15th and 30th minutes, 1st, 2nd, 6th, 12th, 24th hours, 2nd day.