The patient walks into to the emergency department (ED) complaining of significant pain in the right eye. It appears red and swollen. The pupils are not equal in size or reactivity – the right pupil remains dilated despite the bright exam room and the flash light. The patient cringes from the bright light, though, and complains the bright lights are hurting his head. He reports that over the last week, both eyes have been aching and he has been seeing halos around lights. The nurse prepares for which test to be performed first?

The patient with ascending weakness that began in the legs undergoes a lumbar puncture for evaluation of the cerebrospinal fluid (CSF). Which CSF results are consistent with a diagnosis of Guillain-Barré syndrome?

The patient who is NPO has an order to receive enemas until the intestines are devoid of stool. After 3 enemas, the patient is still passing a moderate amount of loose stool. Which action by the nurse is appropriate?