A nurse is caring for a client who has poison ivy and is prescribed diphenhydramine. Which of the following instructions should the nurse give regarding the adverse effect of dry mouth associated with diphenhydramine?
"Administer the medication with food."
"Discontinue the medication and notify your provider.”
"Place a humidifier at your bedside every evening.”
“Chew on sugarless gum or suck on hard, sour candies."
The Correct Answer is D
Dry mouth is a common side effect of diphenhydramine, which is an antihistamine medication commonly used to relieve symptoms of allergies, including itching and rash. Chewing on sugarless gum or sucking on hard, sour candies can help stimulate saliva production and alleviate the discomfort of dry mouth.

A. "Administer the medication with food": While taking diphenhydramine with food may help reduce the risk of stomach upset, it does not directly address the dry mouth side effect.
B. "Discontinue the medication and notify your provider": Discontinuing the medication without consulting the healthcare provider is not recommended unless specifically instructed to do so. Dry mouth is a common side effect of diphenhydramine and can be managed with supportive measures.
C. "Place a humidifier at your bedside every evening": While using a humidifier can help add moisture to the air and potentially alleviate dryness in the environment, it is not a specific instruction for managing dry mouth caused by diphenhydramine.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Expectorants are medications that help thin and loosen mucus in the respiratory tract, making it easier to cough up and clear from the airways. Increasing fluid intake, particularly water helps to keep the mucus thin and less sticky, facilitating its removal. Adequate hydration can help promote effective expectoration and relieve congestion.
The other options are incorrect because:
B. Taking the medication once a day only, usually at bedtime: The dosing frequency and timing of expectorants can vary depending on the specific medication prescribed. It is important to follow the healthcare provider's instructions regarding the dosing schedule.
C. Increase fiber and fluid intake to prevent constipation: This instruction is unrelated to expectorant use. Increasing fiber and fluid intake is commonly recommended to promote regular bowel movements and prevent constipation, but it is not directly related to expectorant therapy.
D. Restrict fluids to decrease mucus production: Restricting fluids can lead to dehydration and thickening of mucus secretions. It is important to stay adequately hydrated to maintain thin and easily expectorated mucus. Restricting fluids is not recommended for managing mucus production.
Correct Answer is D
Explanation
Theophylline is a bronchodilator medication used in the treatment of asthma and other respiratory conditions. It works by relaxing the smooth muscles in the airways, allowing for easier breathing. However, theophylline is associated with potential adverse effects, and one of the most significant concerns is its potential to cause dysrhythmias (irregular heart rhythms).
Dysrhythmias can include tachycardia (rapid heart rate), atrial fibrillation, or other disturbances in heart rhythm.
Constipation is not a commonly reported adverse effect of theophylline. Oliguria (decreased urine output) is not typically associated with theophylline use. Drowsiness can occur with theophylline, but dysrhythmias are considered a more significant and potentially serious adverse effect. It is crucial for the nurse to educate the client about the potential for dysrhythmias and advise them to report any irregular heartbeat or other cardiac symptoms promptly.

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