Effect of Multimodal Opioid-free Anesthesia on Return of Bowel Function in Laparoscopic Colorectal Surgery

A Randomized Control Trial Evaluating the Utility of Multimodal Opioid-free Anesthesia on Return of Bowel Function in Laparoscopic Colorectal Surgery

The objective of this study is to determine if an opioid-free general anesthetic (OFA) technique utilizing lidocaine, ketamine, dexmedetomidine and magnesium reduce postoperative opioid consumption and speed return of bowel function in patients undergoing elective, laparoscopic, colorectal surgery compared to traditional opioid-containing general anesthetic techniques. It is hypothesized that this intraoperative OFA regimen will reduce postoperative opioid consumption, and expedite return of bowel function in this population.

The objective of this trial is to determine whether an opioid-free general anesthetic can help reduce postoperative opioid consumption and speed return of bowel function in patients undergoing elective, laparoscopic, colorectal surgery when compared with traditional opioid-containing techniques.

Inclusion Criteria:

• Age > 18, American Society of Anesthesiology (ASA) class I-III patients scheduled for elective laparoscopic/laparoscopic assisted colorectal surgery

Exclusion Criteria:

• Emergency surgery, open surgery, contraindications to laparoscopic surgery (ie. adhesions, inability to tolerate pneumoperitoneum), American Society of Anesthesiology (ASA) class 4, age < 18, pregnant or breastfeeding women, significant cardiorespiratory/hepatic/renal disease, allergy to any study drugs, inability to consent, inability to respond to pain assessments, inability to use the patient controlled analgesia device (PCA)