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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Accelerated recovery from doxacurium-induced neuromuscular blockade in patients receiving chronic anticonvulsant therapy.

STUDY OBJECTIVE: To determine whether a drug interaction exists between doxacurium and anticonvulsants. DESIGN: Open-label controlled study. SETTING: Inpatient neuroanesthesiology service at a university medical center. PATIENTS: Three groups of nine patients each, consisting of those chronically receiving carbamazepine, phenytoin, or no anticonvulsant therapy. INTERVENTION: Intravenous administration of doxacurium 60 micrograms/kg during anesthesia with nitrous oxide (N2O), fentanyl, and droperidol. MEASUREMENTS AND MAIN RESULTS: The adductor pollicis mechanical response to single 0.2-millisecond supramaximal pulses delivered to the ulnar nerve at 0.15 Hz was recorded. Patients receiving phenytoin or carbamazepine recovered neuromuscular function more quickly than did the control group. The times from doxacurium injection to 50% recovery of mechanomyographic response, for example, were as follows: control group, 161 +/- 55 minutes (mean +/- SD); phenytoin group, 76 +/- 31 minutes; and carbamazepine group, 66 +/- 27 minutes (p less than 0.05). The time for recovery from 75% to 25% blockade (recovery index) was decreased by 53% in the phenytoin group and by 67% in the carbamazepine group as compared with the control group (41.0 +/- 18.0 minutes and 28.6 +/- 8.6 minutes vs 86.4 +/- 45.2 minutes, respectively). CONCLUSION: Chronic treatment with anticonvulsants results in more rapid recovery from neuromuscular blockade produced by doxacurium.[1]


  1. Accelerated recovery from doxacurium-induced neuromuscular blockade in patients receiving chronic anticonvulsant therapy. Ornstein, E., Matteo, R.S., Weinstein, J.A., Halevy, J.D., Young, W.L., Abou-Donia, M.M. Journal of clinical anesthesia. (1991) [Pubmed]
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