A nurse is planning care for a client who has a detached retina and is preoperative for a surgical repair. The nurse should prepare to administer which of the following medications?
Timolol
Pilocarpine
Latanoprost
Phenylephrine
The Correct Answer is D
Phenylephrine is an alpha-adrenergic agent. It binds onto adrenergic receptors producing a sympathetic effect that dilates the pupil. Dilation of the pupils allows for visualization of inner structures of the eye and easier access during retinal surgery.
A. Timolol is a beta-blocker eye drop used to reduce intraocular pressure in conditions like glaucoma.
B. Pilocarpine is a miotic agent (constricts the pupil) used to treat conditions like glaucoma.
C. Latanoprost is a prostaglandin analog used to lower intraocular pressure in glaucoma.
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Related Questions
Correct Answer is C
Explanation
Cimetidine inhibits the cytochrome enzymes leading to increased blood concentration of other drugs like theophylline hence increased risk of toxicity. The dosage of the drugs should be lowered when one is on cimetidine.
A-Cimetidine should be taken with meals or at bedtime for more effective absorption and optimal therapeutic effect.
B. There is no specific duration mentioned for the treatment of duodenal ulcer with cimetidine.
D. Taking cimetidine with an antacid is not recommended as they decrease the absorption of cimetidine.
Correct Answer is C
Explanation
hydroxychloroquine is a quinoline that is used to suppress the immune system in autoimmune conditions. Among its side effects, it can cause retinal toxicity that warrants stopping the medications. Blurring of vision should, therefore, be reported immediately.
A, B, and D - these are potential adverse effects of hydroxychloroquine but do not require immediate attention
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