Author Question: The nurse has just administered parasympathomimetic ophthalmic drops to a patient to reduce ... (Read 91 times)

Yi-Chen · **on:** Jul 23, 2018

The nurse has just administered parasympathomimetic ophthalmic drops to a patient to reduce intraocular pressure in the treatment of glaucoma.

Which clinical finding would the nurse expect as a response to the administration of the eye drops?
a. Mydriasis
b. Miosis
c. Decreased drainage of aqueous humor
d. Pupillary dilation

Question 2

Which of the following beta blockers used in the treatment of glaucoma pose or poses the least risk for patients with asthma and chronic obstructive pulmonary disease? (Select all that apply.)

a. Betaxolol
b. Carteolol
c. Levobetaxolol
d. Metipranolol
e. Timolol

milbourne11 · **Reply #1 on:** Jul 23, 2018

Answer to Question 1

ANS: B
Miosis, or pupillary constriction, would be expected as a result of the parasympathomimetic response.
A sympathetic response would be mydriasis, or pupillary dilation.
These medications do not reduce the drainage of the aqueous humor.

Answer to Question 2

ANS: A, C
Only two ophthalmic beta blockers, betaxolol and levobetaxolol, are beta1 selective and therefore are preferred for patients with asthma and chronic obstructive pulmonary disease (COPD), because they pose the least risk to these patients.
Carteolol, metipranolol, and timolol are nonselective, which means that they block both beta1 and beta2 receptors. Blockade of beta2 receptors in the lung can lead to bronchospasm in patients with reactive airway disease.