A nurse is teaching a group of newly licensed nurses about the prevention of medication errors. Which of the following factors should the nurse identify as the most frequent cause of fatal medication errors?
Incorrect packaging, such as a topical medication packaged as an oral medication.
Delivery device problems, such as an infusion pump malfunction.
Name confusion between two medications with similar sounding names.
Incorrect labeling of a medication dispensed by the pharmacy.
The Correct Answer is C
Choice A rationale
Incorrect packaging, such as a topical medication packaged as an oral medication, can lead to medication errors. However, it is not the most frequent cause of fatal medication errors. Packaging errors are relatively rare and usually caught before administration.
Choice B rationale
Delivery device problems, such as an infusion pump malfunction, can cause medication errors. These errors can be serious but are not the most frequent cause of fatal medication errors. Device malfunctions are often detected and corrected by healthcare professionals.
Choice C rationale
Name confusion between two medications with similar sounding names is the most frequent cause of fatal medication errors. This type of error occurs when medications with similar names are confused, leading to the administration of the wrong drug. This can have serious and sometimes fatal consequences.
Choice D rationale
Incorrect labeling of a medication dispensed by the pharmacy can lead to medication errors. While labeling errors are a significant concern, they are not the most frequent cause of fatal medication errors. These errors are often identified and corrected before administration.
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Correct Answer is B
Explanation
Choice A rationale
Repeating up to four doses until pain is relieved is incorrect. The correct instruction is to take one tablet at the onset of pain and repeat every 5 minutes if needed, up to a maximum of three tablets in 15 minutes.
Choice B rationale
Storing unused tablets at room temperature is correct. Nitroglycerin tablets should be stored in their original container at room temperature, away from moisture and heat.
Choice C rationale
Taking two tablets at the onset of pain is incorrect. The correct instruction is to take one tablet at the onset of pain and repeat every 5 minutes if needed, up to a maximum of three tablets in 15 minutes.
Choice D rationale
Taking the medication two hours prior to exercise is incorrect. Nitroglycerin should be taken 5 to 10 minutes before an activity that may cause chest pain.
Correct Answer is A
Explanation
Choice A rationale
A neutrophil count of 650/mm³ is significantly lower than the normal range (2,500 to 8,000/mm³) and indicates neutropenia, which is a known adverse effect of zidovudine. Neutropenia increases the risk of infections and requires close monitoring and potential dose adjustment or discontinuation of the medication.
Choice B rationale
A platelet count of 450,000/mm³ is slightly above the normal range (150,000 to 400,000/mm³) but is not typically associated with zidovudine toxicity. Zidovudine is more commonly associated with bone marrow suppression leading to anemia and neutropenia rather than thrombocytosis.
Choice C rationale
An Hgb level of 17 g/dL is above the normal range for females (12 to 16 g/dL) but is not a common adverse effect of zidovudine. Zidovudine is more likely to cause anemia, leading to lower hemoglobin levels rather than elevated levels.
Choice D rationale
A creatinine level of 1.5 mg/dL is within the upper limit of the normal range (0.5 to 1 mg/dL) and is not a typical adverse effect of zidovudine. Zidovudine primarily affects the bone marrow and does not have a significant impact on renal function.