The client is 34 years old and has recently started taking theophylline.
The nurse knows that medication teaching has been successful when the client agrees to what activity?
Eating foods high in potassium.
Avoiding beverages that contain caffeine.
Taking the medication on an empty stomach.
Limiting fluid intake to 1,000 mL a day.
The Correct Answer is B
It works by relaxing the smooth muscles of the airways and increasing airflow to the lungs.
However, theophylline has a narrow therapeutic range and can cause side effects such as nausea, vomiting, insomnia, tremors, and cardiac arrhythmias if the blood level is too high.
Caffeine is a stimulant that can increase the effects of theophylline and raise the risk of toxicity.
Therefore, patients taking theophylline should avoid caffeine-containing beverages such as coffee, tea, cola, and energy drinks.
Choice A is wrong because eating foods high in potassium has no effect on theophylline metabolism or action.
Potassium is an electrolyte that is important for nerve and muscle function, but it does not interact with theophylline.
Choice C is wrong because taking the medication on an empty stomach can increase the absorption of theophylline and cause gastric irritation.
Theophylline should be taken with food or milk to reduce stomach upset and prevent fluctuations in blood levels.
Choice D is wrong because limiting fluid intake to 1,000 mL a day can cause dehydration and increase the concentration of theophylline in the blood.
Theophylline
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Guaifenesin is an expectorant that helps thin and loosen mucus in the lungs, making it easier to cough up the sputum. Some possible explanations for the other choices are:
Choice A. Benzonatate is wrong because benzonatate is an antitussive that suppresses the cough reflex by numbing the throat and lungs.
It does not help with sputum production or clearance.
Choice B. Dextromethorphan is wrong because dextromethorphan is also an antitussive that acts on the brain to reduce the urge to cough.
It does not affect the mucus or bronchial secretions.
Choice C. Hydrocodone is wrong because hydrocodone is a narcotic antitussive that works by binding to opioid receptors in the brain and spinal cord, blocking pain signals and decreasing cough.
It can cause sedation, respiratory depression, and dependence, and is not indicated for bronchitis.
Normal ranges for sputum production vary depending on the individual and the cause of the cough, but generally range from 10 to 100 mL per day.
Excessive or abnormal sputum may indicate an infection, inflammation, or obstruction of the airways.
Correct Answer is C
Explanation
The nurse should question an order for bismuth salts for a client with an allergy to aspirin because bismuth salts contain salicylates, which are chemically related to aspirin and can cause allergic reactions.
Choice A is wrong because rheumatoid arthritis is not a contraindication for bismuth salts.
Bismuth salts may have anti-inflammatory effects that could benefit clients with rheumatoid arthritis.
Choice B is wrong because viral gastroenteritis is not a contraindication for bismuth salts.
Bismuth salts may help reduce diarrhea and inflammation caused by viral gastroenteritis.
Choice D is wrong because hypertension is not a contraindication for bismuth salts.
Bismuth salts do not affect blood pressure or interact with antihypertensive medications.
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today