Effect of Rectus Block Timing on Opioid Use

The Effect of Timing of Rectus Sheath Blockade During Robotic Prostate Surgery on Opioid Consumption: A Randomized Double-Blind Study

The aim of this study is to observe the effect of administering local anesthetic to the abdominal wall at the beginning or end of surgery under general anesthesia on opioid consumption during surgery. The hypothesis of this study is to demonstrate that administering a rectus sheath block before the surgical procedure under general anesthesia is effective in reducing intraoperative opioid consumption and opioid-related side effects compared to administering it after the surgery is completed.

Inclusion Criteria:

-ASA (American Society of Anesthesiologists) I-III adult patients with prostate cancer and benign prostate diseases scheduled for robotic surgery at Koç University Hospital.

Exclusion Criteria:

• <18 years of age
• ASA (American Society of Anesthesiologists) IV, V patients
• Non-elective emergency cases
• Previous major abdominal/pelvic surgery
• History of significant psychiatric disorders
• Patients who may have contraindications to nerve blocks (bleeding diathesis, infection, and local anesthetic allergy).