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Author Question: What is the action of timolol maleate (Timoptic), a beta-adrenergic blocking agent? a. Draws ... (Read 52 times)

Haya94

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on: Jul 24, 2018
What is the action of timolol maleate (Timoptic), a beta-adrenergic blocking agent?
 
  a. Draws aqueous humor from the eye into the circulatory network
  b. Increases the production of aqueous humor
  c. Increases the outflow of aqueous humor
  d. Decreases the production of aqueous humor

Question 2

Which medication is used to produce miosis following a diagnostic procedure?
 
  a. Pilocarpine (Pilocar)
  b. Mannitol (Osmitrol)
  c. Atropine (Isopto Atropine)
  d. Epinephrine (EpiPen)


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lin77x

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Reply #1 on: Jul 24, 2018
Answer to Question 1

ANS: D
Timolol maleate is a beta-adrenergic blocking agent used to reduce increased intraocular pressure. The exact mechanism of action of these medications is unknown, but they are believed to reduce the production of aqueous humor. Timolol is believed to decrease production of aqueous humor.

Answer to Question 2

ANS: A
Pilocarpine is a direct acting cholinergic agent that is used to counter the effects of mydriatic and cycloplegic agents after surgery or eye ophthalmoscopic examinations. Cholinergic agents also reduce IOP in glaucoma patients by widening the filtration angle that permits outflow of aqueous humor. Mannitol is an osmotic diuretic given to decrease ocular pressure by drawing aqueous humor from the eye. Atropine is a mydriatic agent given to dilate the pupil. Epinephrine may be used to treat certain types of glaucoma.


Haya94

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Reply 2 on: Jul 24, 2018
Excellent

upturnedfurball

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Reply 3 on: Yesterday
:D TYSM

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