NCLEX RN Medical Surgical Practice Questions Related

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The nurse is to Ros instill drops of phenylephrine hydrochloride (Neo-Synephrine) into the client's eye prior to cataract surgery. Which of the following is the expected outcome?

  • A. Dilation of the pupil and blood vessels.
  • B. Dilation of the pupil and constriction of blood vessels.
  • C. Constriction of the pupil and constriction of blood vessels.
  • D. Constriction of the pupil and dilation of blood vessels.
Correct Answer: B

Rationale: Phenylephrine hydrochloride (Neo-Synephrine) is a sympathomimetic agent used to dilate the pupil (mydriasis) by stimulating the dilator muscle of the iris and to constrict blood vessels, reducing conjunctival redness and swelling before cataract surgery.