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  • Title: A dose-response evaluation of pipecuronium bromide in elderly patients under balanced anesthesia.
    Author: Azad SS, Larijani GE, Goldberg ME, Beach CA, Marr AT, Seltzer JL.
    Journal: J Clin Pharmacol; 1989 Jul; 29(7):657-9. PubMed ID: 2547848.
    Abstract:
    Pipecuronium bromide is a new steroidal non-depolarizing muscle relaxant currently under investigation. It is similar to pancuronium with respect to the duration of action, but lacking its cardiovascular side effects. We examined the dose-response relation of pipecuronium in 27 patients, ages 66-79 years, utilizing the incremental dose method under balanced anesthesia. The ED50, ED90 and ED95 were 22.42 (5.2) mcg/kg, 31.81 (6.9) mcg/kg and 35.12 (7.8) mcg/kg, respectively (log probit method). Our recovery data also demonstrate that residual neuromuscular blockade due to pipecuronium can easily be antagonized with neostigmine as long as spontaneous recovery of T1- at the time of reversal administration is greater than 13%. The authors conclude that under balanced anesthesia the cumulative dose-response of pipecuronium in the elderly patients is consistent with those previously described for younger population. Therefore, no dose adjustment appears necessary for the elderly. However, as with all medications, careful administration is appropriate.
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