alexa Comparative haemodynamic and respiratory effects of midazolam and flunitrazepam as induction agents in cardiac surgery.


Journal of Microbial & Biochemical Technology

Author(s): Morel D, Forster A, Gardaz JP, Suter PM, Gemperle M

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Abstract 30 cardiac surgical patients were investigated for comparing the respiratory and haemodynamic repercussions of induction of anaesthesia with either flunitrazepam or 8-chloro-6-(2-fluorophenyl)-1-methyl-4H-imidazo[1,5-a] [1,4]benzodiazepine (midazolam, Ro 21-3981, Dormicum). The patients were premedicated with morphine, 0.15 mg/kg i.m., and divided into two groups: one group receiving flunitrazepam 0.03 mg/kg, the other midazolam 0.15 mg/kg injected i.v. over a 15-s period. The induction time and the respiratory depression were similar in both groups. A similar decrease in systolic, diastolic and mean arterial pressures was noted, with maximum decrease of mean arterial pressure of 21\% 5 min after injection of flunitrazepam, and of 19\% after injection of midazolam. Midazolam produced a significant but transient pulse acceleration of 4\% 1 min after the injection, while flunitrazepam produced a moderate decrease of the heart rate. These results indicate that in cardiac surgical patients midazolam produces a moderate respiratory and cardiovascular depression similar to flunitrazepam.
This article was published in Arzneimittelforschung and referenced in Journal of Microbial & Biochemical Technology

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