A client is having difficulty perceiving different colors. The ...

[lak]

A client is having difficulty perceiving different colors. The nurse realizes the client may have a disorder that affects the photosensitive receptor cells of the retina, which makes the perception of color possible, or a disorder that affects the:
 
  1. rods.
  2. cones.
  3. optic discs.
  4. irises.

Question 2

A client diagnosed with asthma is having an acute episode at home. Which of the following medications should the client be instructed not to use during this episode?
 
  1. Albuterol
  2. Proventil
  3. Serevent
  4. Ventolin

[potomatos]

Answer to Question 1

2
Other neurosensory elements located in the retina are cones, which mediate color vision. Rods mediate black-and-white vision. The optic disc and iris are not responsible for color vision.

Answer to Question 2

3
Serevent is a long-acting agent and is not to be used as rescue medication during acute episodes. Albuterol (also sold under the brand names Proventil and Ventolin) is a short-acting agent used as a rescue medication.