A 78-year-old client is admitted to the emergency department with a heart rate of 34 beats/min. Family members tell the nurse that the client may have mistakenly taken several doses of donepezil. The nurse should anticipate what intervention to treat the client's bradycardia?
STAT administration of atropine
administration of activated charcoal
hemodialysis
intravenous administration of pseudoephedrine
The Correct Answer is A
A) STAT administration of atropine:
This is the correct answer. Atropine is a cholinergic antagonist that can increase heart rate by blocking the action of acetylcholine on cardiac muscarinic receptors. In cases of severe bradycardia, especially if associated with symptoms such as dizziness, syncope, or hypotension, atropine is often administered to increase heart rate and improve cardiac output. The dose of atropine and frequency of administration depend on the severity of bradycardia and the clinical response.
B) Administration of activated charcoal:
Activated charcoal is used in cases of overdose or poisoning to absorb ingested toxins and prevent their absorption into the bloodstream. However, in this scenario, where the primary concern is bradycardia resulting from cholinesterase inhibitor (donepezil) toxicity, activated charcoal would not be effective in reversing the bradycardic effects of the medication.
C) Hemodialysis:
Hemodialysis is a renal replacement therapy used to remove toxins and waste products from the blood in individuals with kidney failure. While hemodialysis may be indicated in cases of severe drug overdose or poisoning to enhance toxin elimination, it is not typically used as a first-line intervention for bradycardia associated with cholinesterase inhibitor toxicity.
D) Intravenous administration of pseudoephedrine:
Pseudoephedrine is a sympathomimetic drug that acts as a vasoconstrictor and can increase heart rate and blood pressure. While it may be used to treat bradycardia in some cases, such as severe symptomatic bradycardia unresponsive to atropine, it is not the first-line treatment for cholinesterase inhibitor toxicity-induced bradycardia. Atropine is preferred due to its direct antagonism of muscarinic receptors in the heart.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A) Milk:
Milk is not known to interact significantly with verapamil. Therefore, there's no need for the client to avoid consuming milk while taking this medication.
B) Orange juice:
Orange juice does not typically interact with verapamil. However, calcium-containing foods and beverages, including orange juice, may reduce the absorption of verapamil when taken simultaneously. While the interaction is not severe, it's advisable for clients to separate the administration of verapamil from calcium-rich foods and beverages to optimize absorption.
C) Grapefruit juice:
This is the correct answer. Grapefruit juice contains compounds that inhibit the activity of cytochrome P450 enzymes, particularly CYP3A4, which are involved in the metabolism of many medications, including verapamil. Consuming grapefruit juice while taking verapamil can lead to elevated blood levels of the medication, increasing the risk of side effects and toxicity. Therefore, clients should avoid grapefruit juice while on verapamil therapy.
D) Coffee:
Coffee does not typically interact with verapamil. However, caffeine-containing beverages like coffee may exacerbate certain side effects of verapamil, such as dizziness or palpitations, due to their stimulant effects. Clients may be advised to limit caffeine intake or consume coffee in moderation while taking verapamil.
Correct Answer is A
Explanation
A) Increasing GI motility and promoting bowel movements:
Laxatives work by increasing gastrointestinal motility, which stimulates the movement of fecal matter through the intestines. This promotes bowel movements and helps alleviate constipation.
B) Preventing incontinent clients from soiling themselves:
Laxatives are not typically used to prevent incontinence. Their primary function is to relieve constipation by promoting bowel movements.
C) Reducing inflammation in the intestinal lining:
Laxatives do not have a direct effect on reducing inflammation in the intestinal lining. They primarily act on bowel motility to facilitate the passage of stool.
D) Suppressing the immune response that causes inflammation:
Laxatives do not suppress the immune response or treat inflammation. They are specifically designed to relieve constipation by promoting bowel movements."
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