A mother questions the decreased effectiveness of methylphenidate (Ritalin), prescribed for her child's attention deficit-hyperactivity disorder (ADHD). Which nursing reply best addresses the mother's concern?
A. "The physician will probably switch from Ritalin to a central nervous system stimulant."
B. "The physician may prescribe an antihistamine with the Ritalin to improve effectiveness."
C. "Your child has probably developed a tolerance to Ritalin and may need a higher dosage."
D. "Your child has developed sensitivity to Ritalin and may be exhibiting an allergy."
ANS: C
The nurse should explain to the mother that the child has probably developed a tolerance to Ritalin and may need a higher dosage. Methylphenidate (Ritalin) is a central nervous system stimulant in which tolerance can develop rapidly. Physical and psychological dependence can also occur.
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