What does the glycosylated hemoglobin test measure?
The number of erythrocytes circulating in the body
The body’s ability to produce insulin over 3-4 weeks
The effectiveness of a dose of diabetes medication
The average blood glucose levels over 2-3 months
The Correct Answer is D
Choice A reason: The glycosylated hemoglobin (HbA1c) test does not measure erythrocyte count. It reflects glucose binding to hemoglobin, indicating average blood glucose over months, not red cell quantity, making this choice incorrect.
Choice B reason: HbA1c does not measure insulin production but reflects glucose levels bound to hemoglobin over 2-3 months. Insulin production is assessed by other tests, like C-peptide, making this choice incorrect.
Choice C reason: HbA1c does not directly measure diabetes medication effectiveness but provides a long-term glucose control average. Medication efficacy is inferred indirectly, making this choice incorrect for the test’s primary purpose.
Choice D reason: The HbA1c test measures average blood glucose over 2-3 months by assessing glucose bound to hemoglobin in red cells, reflecting long-term glycemic control, making this the correct choice.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A reason: Warm skin indicates adequate blood flow and perfusion, often seen in normal or hyperemic states. Poor perfusion, due to reduced blood flow, typically causes cool skin as less warm blood reaches tissues, making this choice incorrect for poor perfusion.
Choice B reason: Pink nailbeds reflect good oxygenation and perfusion, as hemoglobin carries oxygen effectively to capillaries. Poor perfusion leads to pale or cyanotic nailbeds due to reduced blood flow or oxygen delivery, making this choice incorrect for indicating poor perfusion.
Choice C reason: Strong pulses indicate robust blood flow and adequate perfusion, as the heart pumps blood effectively to peripheral tissues. Poor perfusion is associated with weak or thready pulses due to low cardiac output, making this choice incorrect.
Choice D reason: Pale lips indicate poor perfusion, as reduced blood flow to peripheral tissues results in less hemoglobin delivering oxygen, causing pallor. This is a classic sign of hypoperfusion, often seen in shock or circulatory compromise, making this the correct choice.
Correct Answer is A
Explanation
Choice A reason: Hepatitis A is transmitted via the fecal-oral route, often through contaminated water or food. Ingesting water with hepatitis A virus leads to acute liver infection, as the virus replicates in hepatocytes, making this the highest risk scenario.
Choice B reason: Hepatitis A is not typically transmitted via blood transfusion, unlike hepatitis B or C. It spreads through contaminated food or water, so blood transfusion poses minimal risk for hepatitis A, making this choice incorrect.
Choice C reason: A newborn born to a mother with cirrhosis is not at high risk for hepatitis A, as it is not congenitally transmitted. Cirrhosis may result from hepatitis but does not directly increase hepatitis A risk, making this incorrect.
Choice D reason: Intravenous drug use is a risk factor for hepatitis B and C due to bloodborne transmission. Hepatitis A spreads via the fecal-oral route, not needles, so drug use poses lower risk compared to contaminated water, making this incorrect.
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