Neuroleptanalgaesia may decrease neuromuscular activity. Action may be prolonged and/or potentiated by aminoglycoside antibiotics, lithium, diazepam, lidocaine (high dose), quinidine, tetracyclines, propranolol, thiamine (high dose), parenteral magnesium sulphate, MAOIs, quinine, protamine, carbamazepine, donepezil and phenytoin (if pancuronium is given concurrently for <1 wk). Action may be decreased by neostigmine, edrophonium, high-dose or long term corticosteroids, adrenaline (may also potentiate effect), azathioprine, theophylline (high doses), clindamycin, nifedipine, piperacillin, polymixins, verapamil, procainamide. Furosemide may increase or decrease effects. TCAs may increase risk of arrhythmias and hypotension during anaesthesia. Potentially Fatal: Potentiated by volatile anaesthetics (isoflurane and enflurane) and local anaesthetics. Prior admin...
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