解答つき検査値と電解質ワークシート

Which laboratory test is used to monitor warfarin therapy?

1. APT with INR
2. BD-dimer
3. CaPTT
4. DPlatelet count

Thrombocytopenia is usually defined as a platelet count below:

1. A15 × 10³/µL (15 × 10⁹/L)
2. B1,000 × 10³/µL (1,000 × 10⁹/L)
3. C450 × 10³/µL (450 × 10⁹/L)
4. D150 × 10³/µL (150 × 10⁹/L)

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 carry oxygen and carbon dioxide in the blood
4. DTo break down old red cells in the spleen

An older adult with chronic kidney disease starts trimethoprim-sulfamethoxazole for a urinary tract infection. Which electrolyte should be monitored closely?

1. AChloride, because the drug causes chloride loss
2. BSodium, because the drug causes heavy sodium retention
3. CPotassium, because trimethoprim can raise it
4. DCalcium, because the drug binds calcium in the gut

肝硬変の患者のアルブミンが 2.2 g/dL（22 g/L）です。最も関連しそうな所見はどれですか？

1. A尿量の増加
2. B浮腫と腹水
3. C高カリウム血症
4. D高血圧

Why must a blue-top (citrate) coagulation tube be filled to the correct level?

1. AThe laboratory charges extra when a tube is not filled correctly
2. BThe blood-to-anticoagulant ratio must be right for accurate clotting times
3. CAn overfull tube is needed to measure the potassium level
4. DUnderfilled tubes always give a falsely low hemoglobin and hematocrit

A patient on stable digoxin starts amiodarone. A week later, the patient has nausea and visual changes, and the digoxin level is above the range. What is the most likely explanation?

1. ADigoxin has raised the amiodarone level
2. BAmiodarone has lowered potassium only
3. CThe patient has started a viral illness
4. DAmiodarone has raised the digoxin level

aPTT の結果が極めて高値ですが、看護師は、検体がヘパリンの点滴が入っている腕から採血されたことを知りました。最もよい対応はどれですか？

1. Aヘパリンを拮抗するため、ただちにプロタミンを投与する
2. Bヘパリンの点滴を永久に中止し、医療者に知らせる
3. C用量を調整する前に、反対の腕から新しい検体を依頼する
4. D結果を受け入れ、点滴速度を半分にする