实验室检查值与电解质练习卷（附答案）

What is the main role of platelets?

1. ATo form a plug at the site of vessel injury
2. BTo produce antibodies against bacteria and viruses
3. CTo break down old red cells in the spleen
4. DTo carry oxygen and carbon dioxide in the blood

What is a typical reference range for the reticulocyte count in an adult?

1. AAbout 0.01–0.05% of red cells
2. BAbout 10–20% of red cells
3. CAbout 0.5–2% of red cells
4. DAbout 40–50% of red cells

Which antibody test is most specific for rheumatoid arthritis?

1. AAnti-CCP antibodies
2. BAnti-HBs antibody
3. CAntinuclear antibody
4. DAnti-D antibody

一名患者的血小板计数为 18 × 10³/µL。哪项护理措施是恰当的？

1. A使用软毛牙刷、电动剃须刀，不做肌内注射
2. B患者头痛时给予处方的阿司匹林
3. C鼓励每天使用牙线两次，并用锋利的剃刀刮胡子
4. D为准确起见，每四小时经直肠测体温

A patient is on an IV insulin infusion protocol in the ICU. How often is the blood glucose usually checked?

1. AOnly if symptoms occur
2. BOnce every 12 hours
3. CAbout every hour
4. DOnce a day before breakfast

A patient's potassium is 7.0 mEq/L. Which ECG change would the nurse expect?

1. ADelta waves before the QRS
2. BFlattened T waves
3. CProminent U waves
4. DTall, peaked T waves

The nurse teaches a patient with chronic kidney disease about a potassium-restricted diet. Which statement shows a need for further teaching?

1. A"I can leach potatoes by soaking them before cooking them"
2. B"Dried apricots and raisins will be a good snack for me now"
3. C"I'll check food labels and ask my dietitian about portion sizes"
4. D"I'll limit bananas, oranges and potatoes in my meals"

A patient on warfarin with an INR of 3.6 fell and hit their head an hour ago. They now report a worsening headache and drowsiness. What is the priority?

1. AReport urgently for imaging and possible reversal
2. BHold warfarin for one dose and observe at home
3. CGive acetaminophen (paracetamol) and recheck the INR tomorrow
4. DEncourage rest in a dark room to settle the pain