Phenytoin (Dilantin) has a narrow therapeutic index. The nurse recognizes that this characteristic means that
A) the safe and the toxic plasma levels of the drug are very close to each other.
B) phenytoin has a low chance of being effective.
C) there is no difference between safe and toxic plasma levels.
D) a very small dosage can result in the desired therapeutic effect.
Correct Answer:
Verified
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