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  • Title: Mivacurium chloride--a comparative profile.
    Author: Diffenbach C, Buzello W, Mellinghoff H.
    Journal: Acta Anaesthesiol Scand Suppl; 1995; 106():23-5. PubMed ID: 8533540.
    Abstract:
    Mivacurium is a new nondepolarizing muscle relaxant of the benzylisoquinoline type. Its short duration of action is due to rapid breakdown by plasma cholinesterase. The dose of mivacurium which produces 95% inhibition of twitch response (ED95) is between 60 and 80 micrograms/kg. Thus, mivacurium is 0.8 times and four times as potent as vecuronium and atracurium, respectively. With 2-3 x ED95, tracheal intubation can be accomplished within 2.5 min of intravenous injection. The ensuing DUR25% (time from injection to 25% recovery of control twitch tension) is twice as long as with suxamethonium and about half as long as with equipotent doses of atracurium or vecuronium. For muscle relaxation during long surgical procedures, mivacurium has been used as a continuous infusion. The average 6-min recovery index after infusion of mivacurium is particularly favourable for flexible control of muscle paralysis, whereas the recovery indices after infusion of atracurium or vecuronium are 15-30 min. In conclusion, mivacurium will close the pharmacodynamic gap between suxamethonium and the nondepolarizing muscle relaxants of intermediate duration of action. It will probably also be a suitable alternative to suxamethonium in elective cases.
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