实验室检查值与电解质练习卷（附答案）

Which sample is commonly used to screen a patient for MRSA carriage on admission?

1. AA swab from the front of the nose
2. BA sample of stool sent for culture
3. CA blood culture from one arm
4. DA clean-catch midstream urine sample

成人血清白蛋白的典型参考范围是多少？

1. A约 8.5–10.5 g/dL（85–105 g/L）
2. B约 0.5–1.0 g/dL（5–10 g/L）
3. C约 3.5–5.0 g/dL（35–50 g/L）
4. D约 12–16 g/dL（120–160 g/L）

Which laboratory test best reflects the body's iron stores?

1. ASerum ferritin
2. BPlatelet count
3. CSerum sodium
4. DSerum albumin

A pregnant woman's blood type is O Rh-negative, and her antibody screen (indirect Coombs test) is negative. What is usually offered at about 28 weeks?

1. AAn IV dose of vitamin K given for the fetus
2. BA transfusion of group O Rh-positive red cells
3. CDaily oral iron and folic acid supplements only
4. DAnti-D immunoglobulin (Rho(D) immune globulin)

一名因房颤服用华法林的患者 INR 为 1.4。这意味着什么？

1. A抗凝不足，更容易发生血栓和卒中
2. B患者不再需要服用华法林
3. C患者出血风险很高，需要立即使用维生素 K
4. D剂量恰到好处，无需改变

对于疑似脓毒症的患者，应在何时采集血培养？

1. A在首剂抗生素之前，且不要过多延误给药
2. B在前三剂抗生素之后
3. C任何时候，因为抗生素不影响结果
4. D仅在发热持续超过三天时

A patient with jaundice and nausea has a positive IgM antibody to hepatitis A virus (IgM anti-HAV). What does this show?

1. AChronic hepatitis A lasting many years
2. BA current or recent hepatitis A infection
3. CImmunity from hepatitis A vaccine long ago
4. DPast hepatitis B infection that has cleared

哪项发现最有力地提示患者肌酐升高是由于急性肾损伤，而不是长期的慢性肾脏病？

1. A三天前肌酐正常，此后翻了一倍
2. B患者超声检查显示肾脏缩小
3. C患者长期贫血
4. D患者多年来肌酐一直偏高