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
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.
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