Small doses of tubocurarine are administered when patients are suspected of having a myasthenia gravis crisis
If the patient develops increased muscle weakness in response to the tubocurarine, the nurse should prepare to administer what kind of drug?
a. Cholinesterase inhibitor
b. Dopamine agonist
c. Ganglionic blocker
d. Neuromuscular blocking agent
ANS: A
If the patient displays increased muscle weakness, this is an adverse effect of the tubocurarine, and respiratory depression may ensue. A dopamine antagonist would not be indicated to reverse the effects of the tubocurarine. Ganglionic blockers interrupt impulse transmission through ganglia of the autonomic nervous system; they are nonselective and no longer have therapeutic uses. A neuromuscular blocking agent would increase muscle paralysis and make the condition worse.
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