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 A
Explanation
Octreotide is a synthetic analog of somatostatin, a hormone that inhibits the secretion of growth hormone, insulin, glucagon, and other hormones. Octreotide can cause gastrointestinal side effects such as abdominal pain, diarrhea, constipation, nausea, vomiting, and flatulence. These side effects are more common and severe with the oral route than with the injectable route.
Choice B is wrong because tinnitus, or ringing in the ears, is not a common or serious side effect of octreotide.
Choice C is wrong because alteration in consciousness is not a common or serious side effect of octreotide.
However, octreotide can affect blood glucose levels and cause hypoglycemia or hyperglycemia, which can lead to confusion, dizziness, fainting, seizures, or coma in severe cases.
Choice D is wrong because changes in vision are not a common or serious side effect of octreotide.
However, octreotide can cause rare but serious eye problems such as blurred vision, double vision, eye pain, or blindness due to optic nerve damage or retinal detachment.
These eye problems require immediate medical attention.
Normal ranges for blood glucose are 70 to 100 mg/dL (3.9 to 5.6 mmol/L) for fasting and less than 140 mg/dL (7.8 mmol/L) for postprandial.
Correct Answer is D
Explanation
This is because prednisolone can cause insomnia if taken later in the day, and it mimics the natural secretion of cortisol by the adrenal glands, which peaks in the morning.
Choice A is wrong because splitting the dose into two equal doses can increase the risk of adrenal suppression and reduce the efficacy of alternate-day therapy (ADT), which is used to minimize adverse effects of corticosteroids.
Choice B is wrong because taking prednisolone before bedtime can interfere with sleep and cause nocturnal cortisol secretion, which can lead to Cushing syndrome.
Choice C is wrong because taking prednisolone 1 hour before meals can cause gastric irritation and ulceration, and it is recommended to take it with food or milk.
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