Esmolol had an opioid-sparing effect in the intraoperative and immediate postoperative period in hypertensive patients undergoing laparoscopy. When combined with alfentanil, it was more effective than placebo in decreasing early PONV.

The addition of remifentanil significantly shortened recovery time in children undergoing fiberoptic bronchoscopy under sevoflurane anaesthesia. In the recovery period, remifentanil did not decrease cough, and increased agitation.

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