实验室检查值与电解质练习卷（附答案）

免费可打印的实验室检查值与电解质练习卷：8 道题，从简单到考试水平，附答案。可打印或另存为 PDF。

新练习卷在线练习，附提示

教师请注意： 可免费打印、复印并在课堂上使用。每份新练习题都有新的数值和独立的答案。欢迎在课程页面添加指向 ExamProblems 的链接。

姓名: ____________________   日期: ____________

1.简单

Which laboratory test is traditionally used to adjust a continuous infusion of unfractionated heparin?

  1. AInternational normalized ratio (INR)
  2. BPlatelet function assay (PFA-100 test)
  3. CErythrocyte sedimentation rate (ESR)
  4. DActivated partial thromboplastin time (aPTT)
2.简单

Which condition commonly causes a high serum potassium?

  1. ASevere diarrhea
  2. BKidney failure
  3. CLoop diuretic use
  4. DRepeated vomiting
3.简单

成人血清镁的典型参考范围是多少？

  1. A约 3.5–5.0 mEq/L（1.75–2.5 mmol/L）
  2. B约 6.0–8.0 mEq/L（3.0–4.0 mmol/L）
  3. C约 1.3–2.1 mEq/L（0.65–1.05 mmol/L）
  4. D约 0.3–0.7 mEq/L（0.15–0.35 mmol/L）
4.中等

A young adult with new diabetes has a very low C-peptide level. What does this suggest?

  1. AThe patient has high insulin resistance, as in type 2 diabetes
  2. BThe patient is injecting too much insulin and needs a lower dose
  3. CThe pancreas is making very little insulin, as in type 1 diabetes
  4. DThe kidneys are excreting all of the patient's insulin in urine
5.中等

A patient on carbamazepine becomes confused and has a headache. Which laboratory result would most likely explain this?

  1. AA high serum calcium
  2. BA low serum magnesium
  3. CA high serum potassium
  4. DA low serum sodium
6.中等

A patient with chronic kidney disease receives an erythropoiesis-stimulating agent such as epoetin alfa. Which assessments are most important?

  1. AHemoglobin and blood pressure
  2. BSerum glucose and ketones
  3. CSerum amylase and lipase
  4. DLiver enzymes and bilirubin
7.困难

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. BThe adrenal glands are not able to produce enough cortisol
  3. CCortisol is being produced without normal feedback control
  4. DThe result is normal, as dexamethasone raises cortisol
8.困难

A patient has a hematocrit of 60% and a raised red cell mass. Which result suggests polycythemia vera rather than secondary polycythemia from chronic hypoxia?

  1. AA high carboxyhemoglobin
  2. BA low oxygen saturation
  3. CA high erythropoietin level
  4. DA low erythropoietin level

答案

  1. 1. D · Activated partial thromboplastin time (aPTT)
  2. 2. B · Kidney failure
  3. 3. C · 约 1.3–2.1 mEq/L（0.65–1.05 mmol/L）
  4. 4. C · The pancreas is making very little insulin, as in type 1 diabetes
  5. 5. D · A low serum sodium
  6. 6. A · Hemoglobin and blood pressure
  7. 7. C · Cortisol is being produced without normal feedback control
  8. 8. D · A low erythropoietin level

完整分步解答：请在 examproblems.com 上练习本主题。