Hypnotic and cardiovascular effects of proprietary and generic propofol formulations do not differ |
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Authors: | Argyro Fassoulaki Andia Paraskeva Konstantinos Papilas Konstantinos Patris |
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Affiliation: | Department of Anesthesia, St Savas Hospital, Athens, Greece. afassoul@otenet.gr |
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Abstract: | PURPOSE: The aim of the study was to compare the potency of two different propofol formulations: proprietary and generic propofol using the bispectral index (BIS) monitoring. METHODS: Forty female patients undergoing breast surgery received propofol 3 mg x kg(-1) followed by propofol infusion adjusted to maintain a 40% BIS value, supplemented by 50% nitrous oxide. Proprietary or generic propofol was administered in a randomized double-blind manner. RESULTS: The propofol mg/BIS% ratio obtained after the bolus dose, the cumulative infused propofol mg/BIS% ratio at the end of each five-minute interval and the total dose of propofol administered as bolus + infusion were similar between the two groups. The two groups did not differ with regard to systolic and diastolic blood pressure, heart rate, end-tidal carbon dioxide and arterial oxygen saturation. CONCLUSION: The two propofol formulations are equipotent when hypnotic effect is assessed by BIS monitoring. |
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