实验室检查值与电解质练习卷（附答案）

The HbA1c reflects the average blood glucose over about which period?

1. AThe past 2–3 months
2. BThe past 1–2 weeks
3. CThe past 24 hours
4. DThe past 1–2 years

血清地高辛常被引用的治疗范围是多少？

1. A约 0.5–2.0 ng/mL
2. B约 10–20 ng/mL
3. C约 20–40 ng/mL
4. D约 0.05–0.2 ng/mL

On urinalysis, dark amber urine with a high specific gravity most often suggests:

1. ANormal urine after drinking extra water
2. BConcentrated urine from low fluid intake
3. CVery dilute urine from high fluid intake
4. DUrine with a large amount of glucose

A healthy woman at 28 weeks of pregnancy has a mildly lower hemoglobin than before pregnancy, with a normal MCV and ferritin. What is the most likely explanation?

1. AIron is being lost through the kidneys during the pregnancy
2. BPregnancy hormones stop the bone marrow from making red cells
3. CThe fetus is destroying the mother's red cells in the circulation
4. DPlasma volume rises more than red cell mass, diluting the blood

A test has very high sensitivity for a disease. What does a negative result mean?

1. AThe patient must have a different disease instead
2. BThe result cannot be used, because sensitivity is high
3. CThe disease is unlikely, so it helps rule it out
4. DThe disease is certain, so treatment should begin

Which IV fluid can be given through the same line as a red cell transfusion?

1. ALactated Ringer's (Hartmann's) solution
2. B0.9% sodium chloride
3. C5% dextrose in water
4. D0.45% sodium chloride

Four drug levels are reported. Which patient should the nurse assess first?

1. ADigoxin 1.0 ng/mL with a pulse of 72/min
2. BLithium 1.8 mEq/L with a new coarse tremor
3. CValproate 75 mcg/mL with no symptoms
4. DPhenytoin 15 mcg/mL with no symptoms

Three days after starting haloperidol, a patient has a temperature of 40 °C, severe muscle rigidity and confusion. Which laboratory result would the nurse expect?

1. AA very low serum sodium
2. BA very low white cell count
3. CA very high creatine kinase (CK)
4. DA very high serum lithium