When monitoring a patient who is taking a cholinergic drug, the nurse will watch for which cardiovascular effect?

Tachycardia

Palpitations

Vasoconstriction

Bradycardia

Answer and Explanation

The Correct Answer is D

A.   Tachycardia is not typically associated with cholinergic drug effects. Cholinergic stimulation tends to slow down the heart rate rather than increase it.
B.   Palpitations may occur with certain cardiac arrhythmias or in response to sympathetic stimulation, but they are not typically associated with cholinergic drug effects.
C.   Cholinergic drugs are more likely to cause vasodilation rather than vasoconstriction.

Therefore, vasoconstriction is not a common cardiovascular effect of cholinergic drug therapy.

D. Bradycardia is a common cardiovascular effect of cholinergic drug therapy. Cholinergic stimulation slows down the heart rate by increasing parasympathetic activity, particularly at the

sinoatrial (SA) node. Therefore, bradycardia is the cardiovascular effect that nurses should monitor for when administering cholinergic drugs.

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Correct Answer is ["A","D","E"]

Explanation

A. Oral contraceptives: Phenobarbital can decrease the effectiveness of oral contraceptives, increasing the risk of contraceptive failure and unintended pregnancy.
B. Antihistamines: While phenobarbital can induce hepatic enzymes, leading to increased

metabolism of some antihistamines, this interaction is less clinically significant compared to the interactions with oral contraceptives, opioids, and diuretics.
C. Warfarin: Phenobarbital can induce the metabolism of warfarin, potentially reducing its anticoagulant effects and necessitating closer monitoring of international normalized ratio (INR) levels.
D. Opioids: Phenobarbital can increase the metabolism of opioids, leading to reduced analgesic effects and potentially causing inadequate pain control.

E. Diuretics: Phenobarbital can accelerate the metabolism of diuretics, potentially reducing their efficacy and necessitating adjustments in dosage or monitoring of electrolyte levels.

A. Decreased urine output B. Increased cardiac output C. Volume restoration D. Reduced anxiety

Correct Answer is B

Explanation

A. Decreased urine output is not the primary intended effect of an adrenergic agonist in the

treatment of shock. While adrenergic agonists may increase blood pressure, leading to a decrease in urine output due to vasoconstriction, the primary goal of administering these drugs in shock is to improve tissue perfusion and cardiac output.
B. Increased cardiac output is the primary intended effect of adrenergic agonists in the treatment of shock. These medications stimulate adrenergic receptors, leading to increased heart rate, contractility, and stroke volume, ultimately improving cardiac output and tissue perfusion.
C. Volume restoration may be a secondary effect of administering fluids along with adrenergic agonists in the treatment of shock, but it is not the primary intended effect of the medication
itself.

D. Reduced anxiety is not a primary goal of administering adrenergic agonists in the treatment of shock. While these medications may have anxiolytic effects in certain situations, the primary goal is to improve cardiovascular function and tissue perfusion.

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When monitoring a patient who is taking a cholinergic drug, the nurse will watch for which cardiovascular effect?

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Naxlex Comprehensive Predictor Exams

The barbiturate phenobarbital is prescribed for a patient with epilepsy. While assessing the patient's current medications, the nurse recognizes that interactions may occur with which drugs? (Select all that apply.)

Correct Answer is ["A","D","E"]

Explanation

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Correct Answer is B

Explanation

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