实验室检查值与电解质练习卷（附答案）

What does the term "leukopenia" mean?

1. AA high platelet count
2. BA high white blood cell count
3. CA low white blood cell count
4. DA low red blood cell count

成人血清钾的典型参考范围是多少？

1. A6.0–8.0 mEq/L
2. B3.5–5.0 mEq/L
3. C135–145 mEq/L
4. D1.3–2.1 mEq/L

In iron-deficiency anemia, the transferrin saturation is usually:

1. ANormal
2. BVariable
3. CLow
4. DHigh

哪种心电图改变与低钙血症有关？

1. AQT 间期缩短
2. BT 波高尖
3. CQT 间期延长
4. D明显的 delta 波

A patient starts high-dose prednisone. Which laboratory change should the nurse expect?

1. AA rise in serum potassium
2. BA rise in blood glucose
3. CA fall in serum sodium
4. DA fall in the white cell count

A stable adult who is not bleeding receives one unit of packed red cells. By about how much is the hemoglobin expected to rise?

1. AAbout 1 g/dL (10 g/L)
2. BAbout 0.1 g/dL (1 g/L)
3. CAbout 3 g/dL (30 g/L)
4. DAbout 5 g/dL (50 g/L)

A patient with suspected Cushing syndrome takes dexamethasone at night. The next morning, the cortisol is still high. What does this suggest?

1. AThe patient has primary hypothyroidism instead
2. BCortisol is being produced without normal feedback control
3. CThe adrenal glands are not able to produce enough cortisol
4. DThe result is normal, as dexamethasone raises cortisol

A patient with severe sepsis is oozing blood from IV sites. Platelets 40 × 10³/µL, fibrinogen low, D-dimer very high, PT and aPTT both prolonged. Which condition fits best?

1. AImmune thrombocytopenic purpura (ITP)
2. BDisseminated intravascular coagulation (DIC)
3. CHemophilia A (factor VIII deficiency)
4. DHeparin-induced thrombocytopenia (HIT)