实验室检查值与电解质练习卷（附答案）

Serum amylase is less specific than lipase for pancreatitis because amylase also comes from:

1. AThe bone marrow
2. BThe salivary glands
3. CThe thyroid gland
4. DThe heart muscle

Which antibody test is most specific for rheumatoid arthritis?

1. AAnti-CCP antibodies
2. BAntinuclear antibody
3. CAnti-HBs antibody
4. DAnti-D antibody

C 反应蛋白（CRP）升高主要说明什么？

1. A脱水和体液丢失
2. B体内有炎症
3. C特指肾衰竭
4. D特指心脏病发作

为什么慢性肾脏病患者常有贫血？

1. A肾病时的高钾使红细胞破裂
2. B肾脏产生的促红细胞生成素减少，而它驱动红细胞的生成
3. C尿毒症毒素使骨髓生成白细胞而不是红细胞
4. D受损的肾脏过滤并破坏红细胞

A week after a splenectomy, a patient's platelet count is 650 × 10³/µL. What is the best interpretation?

1. AAn expected rise after splenectomy that increases clot risk
2. BA sign of new leukemia that needs immediate chemotherapy
3. CA laboratory error, because platelets fall after splenectomy
4. DA sign of iron overload from the surgery and transfusion

A patient taking spironolactone asks about using a salt substitute. What should the nurse explain?

1. AMost salt substitutes contain potassium and can raise the level too high
2. BSalt substitutes are safe because they contain only sodium chloride
3. CSalt substitutes are fine as long as the patient drinks more water
4. DSalt substitutes protect against the potassium loss caused by this drug

A trauma patient receives many units of blood quickly and then develops muscle twitching and low blood pressure. Which laboratory value is most likely to explain this?

1. AA high serum sodium
2. BA low ionized calcium
3. CA high serum magnesium
4. DA low serum glucose

A patient has sudden episodes of severe headache, sweating, palpitations and very high blood pressure. Which test is most useful to look for the cause?

1. APlasma free metanephrines
2. BSerum TSH and free T₄
3. CFasting lipid profile
4. DSerum calcium only