Stopped: Poor recruitment
This study investigates the use of remimazolam as a sedative/hypnotic in general anesthesia. Remimazolam or propofol will be administered together with fentanyl/sufentanil/remifentanil as opioid analgesics and a neuromuscular blocker. In total, 530 patients will be randomized. This group of 530 patients will be split randomly into 2 groups as follows: • 106 patients will be randomized to induction with propofol plus fentanyl or sufentanil or remifentanil and a neuromuscular blocker. Throughout maintenance, the patients will receive propofol and remifentanil until weaning from the mechanical ventilation on the ICU or PACU within 24 hours after induction. Afterwards, sedation with propofol as study medication has to be ended. If necessary, the sedation is to be continued with the hospital's own supplies (propofol or other sedative). • 424 patients will be randomized to induction with remimazolam 6.0 mg/kg/hr together with fentanyl or sufentanil or remifentanil and a neuromuscular blocker. Throughout maintenance, the patients will receive remimazolam and remifentanil until weaning from the mechanical ventilation on the ICU or PACU within 24 hours after induction. The primary endpoint is successful sedation is defined as a Narcotrend index of 60 or less during at least 85% of the maintenance time and no rescue sedative medication administered. The maintenance starts at arrival at the operation theater and ends with the completion of the last skin suture.
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Success of Procedure
Timeframe: During maintenance phase of operation - between arrival at operation theatre and completion of last skin suture (estimated up to 24 hours).