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.

Correct Answer is ["15"]

Explanation

Given:

Amantadine syrup concentration: 50 mg/5 mL Desired dose of amantadine: 150 mg

5ml contains 50mg

1ml contains 50/5= 10mg Given 10mg is in 1ml

Then 150mg will be contained in: 150/10

=15ml

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

Nursing Test Bank

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

A nurse is preparing to administer amantadine 150 mg PO every 12 hr. Available is amantadine 50 mg/5 mL syrup. How many mL should the nurse administer per dose? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

Correct Answer is ["15"]

Explanation

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