• L Godsiff, L Magee, and G R Park.
• John Farman Intensive Care Unit, Addenbrooke's Hospital, Cambridge, UK.
• Eur J Anaesthesiol Suppl. 1995 Nov 1; 12: 35-40.

AbstractWe evaluated the addition of midazolam to propofol during induction of anaesthesia by assessing laryngeal mask tolerance, haemodynamic variables, recovery times and cost. Forty patients (ASA grades I-IV) undergoing elective surgery were allocated randomly to receive a standard dose of propofol or a smaller dose of propofol combined with midazolam. A laryngeal mask was inserted and any episodes of coughing or hiccuping during its insertion or removal were recorded. Anaesthesia was maintained with nitrous oxide and enflurane with fentanyl for analgesia. After surgery, recovery times, pain, shivering, nausea, vomiting and analgesic requirements were recorded. The cost of the drugs used was also calculated. No significant differences were detected in any variables, except that patients given propofol needed more morphine in the recovery ward. The average cost of propofol alone was 3.47 pounds per anaesthetic, while the midazolam plus propofol cost was 2.03 pounds. Adding midazolam to propofol allowed a reduced dose of propofol to be used without adverse effects, while reducing the anaesthetic costs.

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