ورقة عمل القيم المخبرية والشوارد مع الإجابات

Why is AST less specific for liver damage than ALT?

1. AAST is made by the bone marrow, not the liver
2. BAST is found only in the kidney tubules
3. CAST is not measured in the blood at all
4. DAST is also found in heart and skeletal muscle

ما المدى المرجعي النموذجي لبوتاسيوم المصل لدى البالغين؟

1. A1,3–2,1 mEq/L
2. B6,0–8,0 mEq/L
3. C135–145 mEq/L
4. D3,5–5,0 mEq/L

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

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

The heparin infusion rate was changed according to protocol. When is the aPTT usually rechecked?

1. AAbout 3 days after the change
2. BAbout 6 hours after the change
3. CAbout 30 minutes after the change
4. DOnly after the infusion is stopped

A nurse completed the hepatitis B vaccine series. Which result shows protective immunity?

1. AA positive IgM anti-HBc
2. BAnti-HBs of 10 mIU/mL or more
3. CA raised ALT level
4. DA positive HBsAg test

A stable adult who is not bleeding receives one unit of packed red cells. By about how much is the hemoglobin expected to rise?

1. AAbout 1 g/dL (10 g/L)
2. BAbout 5 g/dL (50 g/L)
3. CAbout 3 g/dL (30 g/L)
4. DAbout 0,1 g/dL (1 g/L)

A patient has a positive hepatitis C antibody (anti-HCV) test. What is the most appropriate next step?

1. AGive hepatitis C vaccine to prevent further infection
2. BRepeat the antibody test, as a positive test is always false
3. CTell the patient they definitely have chronic hepatitis C
4. DTest for HCV RNA to find out whether infection is current

A patient with a heart murmur and fever has three sets of blood cultures, taken hours apart, all growing the same Streptococcus species. What does this suggest?

1. APersistent bacteremia, as in infective endocarditis
2. BContamination of all three samples during collection
3. CA urinary tract infection that has spread to the skin
4. DA normal finding in patients with heart murmurs