实验室检查值与电解质练习卷（附答案）

Which blood test is the usual measure of a person's vitamin D status?

1. ASerum phosphate
2. BParathyroid hormone
3. C1,25-dihydroxyvitamin D
4. D25-hydroxyvitamin D

An eGFR below which value indicates stage 5 chronic kidney disease (kidney failure)?

1. A90 mL/min/1.73 m²
2. B60 mL/min/1.73 m²
3. C15 mL/min/1.73 m²
4. D45 mL/min/1.73 m²

Which drug is routinely monitored with blood levels because of its narrow therapeutic range?

1. ALoratadine
2. BOmeprazole
3. CLithium
4. DAmoxicillin

When should a blood specimen tube be labeled?

1. AAt the nurses' station, after all samples for the shift are drawn
2. BIn the laboratory, by the staff who receive the unlabeled sample
3. CAt the bedside, in the patient's presence, using two identifiers
4. DBefore entering the room, so tubes are ready for the next patients

When is a peak level for an IV aminoglycoside such as gentamicin usually drawn?

1. AJust before the next dose is started
2. BExactly 24 hours after the first dose
3. CAbout 30 minutes after the infusion ends
4. DAt any time convenient for the patient

万古霉素谷浓度高于目标范围。主要担忧是哪种不良反应？

1. A便秘和腹胀
2. B肾损害（肾毒性）
3. C低血糖
4. D血小板计数升高（血小板增多症）

A patient with thalassemia major has received regular red cell transfusions for years. The ferritin is now very high. What does this most likely show, and what treatment is used?

1. ALiver failure, treated with a liver transplant at once
2. BIron deficiency, treated with IV iron supplements
3. CIron overload, treated with iron chelation therapy
4. DAcute infection, treated with broad-spectrum antibiotics

Which set of results most strongly suggests hemolytic anemia?

1. ALow hemoglobin, low reticulocytes, low MCV, low ferritin
2. BLow hemoglobin, high reticulocytes, high unconjugated bilirubin, high LDH
3. CLow hemoglobin, low platelets, low white cells, low reticulocytes
4. DLow hemoglobin, high MCV, low vitamin B₁₂, normal bilirubin