The Effect of Dexmedetomidine During Opioid Free Anesthesia on Postoperative Recovery After Gastrectomy

The prepared drug marks the assigned group as unknown. In both groups, the test drug marked as unknown begins to be administered in an anesthetic induction. When the patient arrives in the operating room, electrocardiogram, noninvasive blood pressure, and bispectral index (BIS) monitoring is performed. In both groups, 2 mg/kg of propofol induces general anesthesia, intubates after administration of rocuronium 0.6 mg/kg, and maintains anesthesia with sevoflurane 1.5-2.5 vol%. Use 0.075 mg of palonosetrone as an antiemetics after inducing anesthesia. Adjust the inhalation anesthetic to maintain BIS 40-60 , mechanical ventilation to maintain the Tidal volume of 8 ml/kg, PEEP 5 mmHg and end-tidal carbon dioxide (EtCO2) of 35-40 mmHg. Push 1mcg of fentanyl and 1g of acetaminophen per kg for pain control 20 minutes before the end of surgery.

The prepared drug marks the assigned group as unknown. In both groups, the test drug marked as unknown begins to be administered in an anesthetic induction. When the patient arrives in the operating room, electrocardiogram, noninvasive blood pressure, and bispectral index (BIS) monitoring is performed. In both groups, 2 mg/kg of propofol induces general anesthesia, intubates after administration of rocuronium 0.6 mg/kg, and maintains anesthesia with sevoflurane 1.5-2.5 vol%. Use 0.075 mg of palonosetrone as an antiemetics after inducing anesthesia. Adjust the inhalation anesthetic to maintain BIS 40-60 , mechanical ventilation to maintain the Tidal volume of 8 ml/kg, PEEP 5 mmHg and end-tidal carbon dioxide (EtCO2) of 35-40 mmHg. Push 1mcg of fentanyl and 1g of acetaminophen per kg for pain control 20 minutes before the end of surgery.