Which symptom is an adverse effect of anticholinergic agents used to treat overactive bladder syndrome (OAB)?
Dry mouth.
Restlessness.
Increased salivation.
Diarrhea.
The Correct Answer is A
Dry mouth is a common adverse effect of anticholinergic agents used to treat overactive bladder syndrome (OAB) . Anticholinergic agents prevent involuntary contractions of the bladder detrusor muscle by blocking the action of acetylcholine, a neurotransmitter that stimulates the muscle . However, anticholinergics are not tissue specific, and they also affect other parts of the body where acetylcholine is involved, such as the salivary glands, the gastrointestinal tract, and the eyes .
Choice B is wrong because restlessness is not a typical side effect of anticholinergic agents. In fact, anticholinergics can cause sedation and drowsiness in some people .
Choice C is wrong because increased salivation is the opposite of what anticholinergics do. Anticholinergics reduce the secretion of saliva, causing dry mouth .
Choice D is wrong because diarrhea is also the opposite of what anticholinergics do. Anticholinergics slow down the movement of the gastrointestinal tract, causing constipation .
Some other possible adverse effects of anticholinergic agents include blurred vision, urinary retention, confusion, memory impairment, and increased risk of dementia and mortality .
Therefore, these drugs should be used with caution and under medical supervision.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Alpha 1 adrenergic blocking agents have a vasodilating effect and can be used for the management of hypertension.They work by preventing the hormone norepinephrine from tightening the muscles in the walls of smaller arteries and veins, thus lowering the blood pressure.Some examples of alpha 1 blockers are doxazosin, prazosin, and terazosin.
Choice A is wrong because alpha 3 adrenergic blockers do not exist.There are only two subtypes of alpha receptors: alpha 1 and alpha 2.
Choice B is wrong because alpha 2 adrenergic antagonists are not used for hypertension.They are used for conditions like attention deficit hyperactivity disorder (ADHD) and opioid withdrawal.Alpha 2 antagonists block the negative feedback mechanism of norepinephrine release, thus increasing the amount of norepinephrine in the blood and raising the blood pressure.
Choice C is wrong because alpha 1 adrenergic agonists have the opposite effect of alpha 1 blockers.They stimulate the alpha 1 receptors and cause vasoconstriction, which increases the blood pressure.Alpha 1 agonists are used for conditions like nasal congestion and hypotension.
Correct Answer is C
Explanation
Positive inotropy and negative chronotropy.Digoxin is a cardiac glycoside that increases the force of the heart contractions (positive inotropy) and slows down the heart rate (negative chronotropy).
Choice A is wrong because positive chronotropy means increasing the heart rate, which is the opposite of what digoxin does.
Choice B is wrong because negative inotropy means decreasing the force of the heart contractions, which is also the opposite of what digoxin does.
Choice D is wrong because positive chronotropy means increasing the heart rate, which is not what digoxin does.
Digoxin is used to treat heart failure and atrial fibrillation, a type of irregular heartbeat.It has a narrow therapeutic window, meaning that the dose must be carefully adjusted to avoid toxicity or ineffectiveness.
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