The nurse administers a direct-acting cholinergic agonist to the ...

[asan beg]

The nurse administers a direct-acting cholinergic agonist to the patient. When assessing this patient for drug effects, the nurse would expect to see effects arising from stimulation of what receptors?
 
  A) Nicotinic
  B) Alpha
  C) Beta
  D) Muscarinic

Question 2

A patient is being treated for benign prostatic hyperplasia (BPH). The patient asks the nurse how the medicine used to treat BPH is supposed to work.
 
  The nurse explains that the drug therapy is designed to relieve the symptoms associated with this condition by doing what? A) Shrinking the gland and/or relaxing the sphincter of the bladder
  B) Increasing testosterone levels to improve sexual functioning
  C) Increasing blood pressure, which will increase blood flow to the area
  D) Activate nitric acid, which will dilate blood vessels in the area to relieve pressure

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Answer to Question 1

D
Feedback:
The direct-acting cholinergic agonists are similar to acetylcholine (ACh) and react directly with receptor sites to cause the same reaction as if Ach had stimulated the receptor sites. These drugs usually stimulate muscarinic receptors within the parasympathetic system. They are used as systemic agents to increase bladder tone, urinary excretion, and gastrointestinal (GI) secretions. One drug is used as an ophthalmic agent to induce miosis to relieve the increased intraocular pressure of glaucoma. They have no effect on alpha and beta receptors in the sympathetic nervous system and little impact on nicotinic receptors.

Answer to Question 2

A
Feedback:
Drugs given to treat BPH will block sympathetic activity to allow relaxation of the sphincter of the bladder or will decrease testosterone effects to shrink the gland and relieve symptoms. They do not increase testosterone levels or blood pressure. Dilating blood vessels would further congest the gland and increase symptoms.

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