OPIOID-FREE ANESTHESIA FOR EXTRACRANIAL BYPASS SURGERIES IN PATIENTS WITH POLYVASCULAR DISEASE

Aim. To assess safety and effectiveness of opioid-free anesthesia in patients with polyvascular disease undergoing carotid endarterectomy for early mobilization and hemodynamic stability in the perioperative period.

Methods. 28 consecutive male patients with polyvascular disease and internal carotid artery stenoses were included in a single-center, randomized observational study. The control group (n = 12) received conventional intravenous anesthesia of fentanyl 0.1 mg bolus every 20 minutes with continuous sedation with propofol at a rate of 4 mg / kg / h. The study group (n = 16) received conventional anesthesia followed by introvenous nefopam 20 mg with continuous infusion of 40 mg/h. Invasive monitoring of blood pressure, sedation depth, and the analgesia nociception index were measured. The marker of brain damage, S100 protein, was measured in blood plasma. All patients underwent neuropsychological testing in the perioperative period.

Results. There were no reliable hemodynamic derangements during anesthesia in both study groups. There were no cases with worsening of the initial coronary circulation according to the ECG. No alterations in the initial neurological status were registered. BIS values were maintained at 56±19 in both groups without increasing the dose of propofol. All patients in the study group versus 5 patients (41.7%) in the control group were extubated in the OR unit.

Conclusion. Opioid-free anesthesia in patients with polyvascular disease undergoing CEA allows achieving adequate pain management in the perioperative period, ensuring early extubation in the OR unit and postoperative mobilization while maintaining stable hemodynamic parameters and ensuring safe cognitive status.

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