A patient is taking oral theophylline for maintenance therapy of stable asthma. A nurse instructs the patient to avoid using which substance to prevent a complication?
A. Echinacea
B. Cimetidine [Tagamet]
C. Sunscreen products
D. Caffeine
Ans: D. Caffeine
Explanation: Theophylline is a methylxanthine that provides benefits through bronchodilation. It is used to reduce the frequency and severity of asthma attacks, especially those occurring at night. Caffeine also is a methylxanthine, and its pharmacologic actions may intensify the adverse effects of theophylline on the central nervous system (CNS) and heart. Sources of caffeine should be avoided. It is not necessary to avoid taking cimetidine or echinacea or using sunscreen products while taking theophylline.
You might also like to view...
A recent immigrant from Vietnam is diagnosed with pulmonary tuberculosis (TB). Which intervention is most important for the nurse to implement with this patient?
A) Patient teaching about the cause of TB B) Reviewing the risk factors for TB C) Developing a list of people with whom the patient has had contact D) Patient teaching about the importance of TB testing
A client has been prescribed immunotherapy. Which of the following measures should the nurse employ to desensitize the client for the allergy?
A) Give minute doses of allergens intradermally. B) Give minute doses of allergens subcutaneously. C) Give moderate doses of allergens intradermally. D) Give moderate doses of allergens subcutaneously.
Which of the following situations/statements best depicts Gould's fourth theme of adult devel-opment?
1. "When I made that decision, I didn't expect it to turn out like it did." 2. "I have to take the opportunity to be my own boss and not rely on others." 3. "I think you can do anything if only you have your health and good friends." 4. "As much as I'd love to open my own shop, I just can't take that kind of chance."
What is the relationship between race and ethnicity?
a. Race is biologic, whereas ethnicity is psychologic. b. Race is skin color, whereas ethnicity is shared beliefs. c. Both race and ethnicity mean "visible subgroup." d. Race means "common physiology," and ethnicity means "common culture."