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  • Title: [Comparative analgesic kinetics of fentanyl and droperidol-fentanyl association (author's transl)].
    Author: Bertrand JC, Conil JM, Lareng L, Gout R, Cros J.
    Journal: Anesth Analg (Paris); 1981; 38(5-6):235-41. PubMed ID: 7270939.
    Abstract:
    UNLABELLED: To specify pharmacological interferences between droperidol and fentanyl an experimental study was carried out on mice. The analgesic kinetic was studied after the administration of the two drugs in a concentration ratio between 25/1 and 150/1. RESULTS: Fentanyl is a potent analgesic with a short time effect. It has very good correlations between dose effect and time effect. Droperidol does not have a analgesic effect. The behaviour of the two drugs depends on the way they are administered, either simultaneously or consecutively: simultaneous administration of the two drugs increases the level and duration of analgesia: nalaxone reverses analgesia, a fentanyl injection given 5 minutes before a droperidol injection produces the same analgesia as fentanyl alone, a droperidol injection given 5 minutes before a fentanyl injection induces a level of analgesia lower than fentanyl alone. Droperidol appears to reverse the fentanyl analgesia.
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