A nurse is assessing a client who has seasonal allergies and is taking an antihistamine. Which of the following findings is an adverse effect of this type of medication?
Photophobia
Diarrhea
Dry mouth
Increased blood pressure
The Correct Answer is C
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.
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Correct Answer is D
Explanation
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.
Correct Answer is D
Explanation
A. Digoxin: Digoxin requires caution with elevated potassium levels, as hyperkalemia can increase the risk of digoxin toxicity. A potassium level of 5.3 mEq/L is borderline high, so it should be used cautiously.
B. Lisinopril: Lisinopril, an ACE inhibitor, can also increase potassium levels. It may not be the best choice for this client due to the elevated potassium.
C. Potassium iodide: Potassium iodide would further increase the client's potassium level and is contraindicated.
D. Furosemide: Furosemide is a loop diuretic that can help to lower serum potassium levels by promoting potassium excretion. Therefore, it is appropriate for this client with an elevated potassium level.