解答つき検査値と電解質ワークシート

Which findings are typical of a low serum magnesium?

1. AJaundice, itching and pale stools
2. BPolyuria, extreme thirst and pale urine
3. CLoss of reflexes, flushing and slow breathing
4. DTremor, hyperreflexia and cardiac arrhythmias

For a fasting plasma glucose test, the patient should have had no caloric intake for at least:

1. A1 hour
2. B3 hours
3. C8 hours
4. D24 hours

Which fasting triglyceride level is commonly described as normal?

1. ABetween 200 and 499 mg/dL (2.3–5.6 mmol/L)
2. BBelow 150 mg/dL (1.7 mmol/L)
3. CAbove 500 mg/dL (5.6 mmol/L)
4. DAbove 1,000 mg/dL (11.3 mmol/L)

A patient with schizophrenia is starting clozapine. Which laboratory value must be monitored regularly?

1. ASerum amylase
2. BAbsolute neutrophil count
3. CInternational normalized ratio
4. DSerum lithium level

A breathless patient in the emergency department has a BNP below 100 pg/mL. What does this suggest?

1. AThe patient has had a myocardial infarction in the past day
2. BThe kidneys are failing and the patient needs dialysis
3. CSevere heart failure is certainly the cause of the problem
4. DHeart failure is an unlikely cause of the breathlessness

A patient's levothyroxine dose was changed today. When is the TSH usually rechecked?

1. AAfter about 24 hours
2. BAfter about 1 year
3. CAfter about 6–8 weeks
4. DAfter about 3 days

A patient with a serum albumin of 1.9 g/dL (19 g/L) has signs of phenytoin toxicity, although the total phenytoin level is in the usual range. What is the most likely explanation?

1. ALow albumin makes the liver clear phenytoin much faster
2. BLow albumin makes the total level falsely high in all cases
3. CLow albumin stops phenytoin from crossing into the brain
4. DLow albumin raises the free (active) fraction of phenytoin

INR 2.4 で安定していたワルファリン服用中の患者が、シプロフロキサシンなどの抗菌薬のコースを開始しました。1 週間後、INR は 4.6 です。最も考えられる説明はどれですか？

1. A患者がビタミン K を多く含む食品をより多く食べた
2. B抗菌薬により、患者の抗凝固の必要性が治った
3. Cワルファリンの作用を増強する薬物相互作用
4. D検査室の誤りだけが考えられる説明である