A major difference in methyldopa, a centrally acting antiadrenergic, and guanethidine, an adrenergic neuron-blocking agent, is that guanethidine:

1. crosses the blood-brain barrier, but methyldopa does not.
2. causes constipation, and methyldopa causes diarrhea.
3. can cause hemolytic anemia, but methyldopa does not.
4. does not cause CNS side effects.


Correct Answer: 4

Nursing

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