A nurse is providing teaching to a client who has emphysema and a new prescription for theophylline. Which of the following instructions should the nurse provide?
Increase fluids to 1L/per day.
Administer the medication with food.
Consume a high-protein diet.
Avoid caffeine while taking this medication.
The Correct Answer is D
A. Increase fluids to 1L/per day. Clients with emphysema are often encouraged to increase fluid intake beyond 1 liter to help thin secretions, but 1 liter per day is generally insufficient.
B. Administer the medication with food. Theophylline should not necessarily be taken with food; it is generally taken on an empty stomach, but it can be taken with food if gastrointestinal upset occurs.
C. Consume a high-protein diet. High-protein diets may increase the metabolism of theophylline, potentially decreasing its therapeutic effect. Dietary considerations for theophylline involve avoiding caffeine.
D. Avoid caffeine while taking this medication. Theophylline is a methylxanthine, similar to caffeine, and consuming caffeine can increase the risk of side effects like tachycardia, nervousness, and insomnia.
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Correct Answer is B
Explanation
A. Vomiting: While vomiting can occur during anaphylaxis, it is not the most immediately life-threatening symptom.
B. Stridor: Stridor indicates upper airway obstruction, which is a critical and life-threatening sign of anaphylaxis. This finding requires immediate intervention, such as administering epinephrine and ensuring airway patency.
C. Hypertension: Hypertension is not typically associated with anaphylaxis; instead, hypotension is more common due to vascular collapse.
D. Urticaria: Urticaria (hives) can occur in anaphylaxis, but it is not as urgent as stridor, which indicates a compromised airway.
Correct Answer is C
Explanation
A. Photophobia: Photophobia is not a common side effect of antihistamines. It can be associated with other conditions, but not typically with antihistamine use.
B. Diarrhea: Diarrhea is not a common side effect of antihistamines; they are more likely to cause constipation due to their anticholinergic effects.
C. Dry mouth: Dry mouth is a common anticholinergic effect of antihistamines. It occurs because these medications block acetylcholine, leading to decreased saliva production.
D. Increased blood pressure: Increased blood pressure is not a typical side effect of antihistamines. While some formulations may cause increased heart rate or palpitations, they do not generally lead to hypertension directly.