Marie Garcia, age 67, reports that her chronic angina has been recurring even though she has been taking nitroglycerin sublingual tablets as prescribed. She tells the nurse that she used to store the tablets on a table by the window, and when she started to use a new batch of tablets, the problem subsided. What I would explain the ineffectiveness of the tablets?
Ms. Garcia developed unstable angina
Exposure to the elements (natural light) caused the drugs to lose their effectiveness
Ms. Garcia developed tolerance to the sublingual form of administration
Ms. Garcia did not follow the correct interval or duration of administration
The Correct Answer is B
Explanation:
A. There is no evidence in the scenario to suggest that Ms. Garcia developed unstable angina.
B. Exposure to light, particularly sunlight, can degrade nitroglycerin, reducing its effectiveness over time.
C. There is no indication that Ms. Garcia developed tolerance to sublingual nitroglycerin in this scenario.
D. Ms. Garcia's storage method for the nitroglycerin tablets, not the interval or duration of administration, likely affected their effectiveness.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Weight loss is a common side effect of methylphenidate (Ritalin) and should be monitored during treatment.
B. Methylphenidate is not typically associated with renal toxicity.
C. Methylphenidate can cause increases in blood pressure and heart rate, not hypotension.
D. Extreme euphoria and insomnia may indicate overstimulation or inappropriate dosing but are not typical side effects of methylphenidate.
Correct Answer is D
Explanation
A. One and one-half tablets would exceed the prescribed dose.
B. One-quarter of a tablet would be 12.5 mg, which is less than the prescribed 25 mg.
C. One tablet would provide 50 mg, which is double the prescribed dose for the first week.
D. Half a tablet of a 50 mg tablet would correctly provide the 25 mg dose prescribed for the first week.
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