Nursing Application: Antihistamines Questions and Answers | Latest Version | 2025/2026 | Correct & Verified

Nursing Application: Antihistamines Questions and Answers | Latest Version | 2025/2026 | Correct & Verified What is the primary use of antihistamines in allergic conditions? To block histamine receptors and reduce allergy symptoms like itching and sneezing. What should the nurse assess before giving an antihistamine for the first time? History of allergies to medications and baseline respiratory status. What is a common side effect of first-generation antihistamines? Drowsiness due to their ability to cross the blood-brain barrier. What teaching should the nurse provide about operating machinery after taking diphenhydramine? Avoid driving or using heavy equipment until the effects are known. Why are second-generation antihistamines preferred for daily allergy management? They cause less sedation and have a longer duration of action. 2 What is a nursing consideration when giving antihistamines to older adults? Monitor for confusion, dizziness, and increased fall risk. What is one therapeutic effect of antihistamines in motion sickness? They reduce nausea and vomiting by blocking histamine receptors in the brain. What is a sign that a client is experiencing an adverse effect from antihistamines? Urinary retention or difficulty urinating, especially in older males. How can antihistamines help in skin conditions like hives? They reduce itching, swelling, and redness caused by histamine release. What should a nurse advise about alcohol use with antihistamines? Avoid alcohol because it can increase drowsiness and sedation. What should a nurse include in discharge teaching for a client taking loratadine? Take once daily and avoid exceeding the recommended dose. 3 Why is it important for a nurse to check for glaucoma in clients taking antihistamines? Antihistamines can increase intraocular pressure and worsen glaucoma. How should a nurse respond if a client reports dry mouth after taking an antihistamine? Encourage sipping water, chewing sugar-free gum, or using lozenges. Why should antihistamines be used cautiously in clients with asthma? They may thicken bronchial secretions and make breathing more difficult. What should a nurse teach a breastfeeding mother about antihistamine use? Some antihistamines may reduce milk supply or pass into breastmilk. What lab value may be affected by prolonged antihistamine use? Liver function tests, especially with long-term use. What time of day should sedating antihistamines be taken? At bedtime to reduce daytime drowsiness. 4 How do antihistamines help in cold symptoms? They reduce nasal congestion, runny nose, and