ورقة عمل القيم المخبرية والشوارد مع الإجابات

ما المدى المرجعي النموذجي لنيتروجين اليوريا في الدم (BUN) لدى البالغين؟

1. Aنحو 70–99 mg/dL (اليوريا 25–35 mmol/L)
2. Bنحو 135–145 mg/dL (اليوريا 48–52 mmol/L)
3. Cنحو 7–20 mg/dL (اليوريا 2,5–7,1 mmol/L)
4. Dنحو 0,6–1,2 mg/dL (اليوريا 0,2–0,4 mmol/L)

Why is AST less specific for liver damage than ALT?

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

Which ECG change is linked to hypercalcemia?

1. AA prolonged QT interval
2. BTall, peaked T waves
3. CA shortened QT interval
4. DProminent U waves

When several samples are drawn at the same venipuncture, which tubes or bottles are filled first?

1. AFluoride (glucose) tubes
2. BEDTA (complete blood count) tubes
3. CBlood culture bottles
4. DCoagulation (citrate) tubes

A patient with diabetes is found unconscious with a blood glucose of 38 mg/dL (2,1 mmol/L). Which treatment is appropriate?

1. AOrange juice poured slowly into the patient's mouth
2. BGlucose tablets placed between the patient's teeth
3. CA dose of rapid-acting insulin to stabilize the glucose
4. DGlucagon by injection, or IV dextrose as prescribed

A patient taking furosemide has a potassium of 3,3 mEq/L and is told to eat more potassium-rich foods. Which snack is the best choice?

1. ARice cakes
2. BPlain crackers
3. CWhite bread
4. DDried apricots

A patient with kidney stones and fatigue has a calcium of 11,6 mg/dL (2,9 mmol/L), a high parathyroid hormone (PTH) and a low phosphate. Which condition is most likely?

1. AHypoparathyroidism
2. BPrimary hyperparathyroidism
3. CVitamin D deficiency
4. DCancer-related hypercalcemia

A 5-year-old has new bruising and petechiae two weeks after a viral illness. Platelets are 12 × 10³/µL; hemoglobin, white cell count and clotting times are normal. Which condition is most likely?

1. AHemophilia A
2. BDisseminated intravascular coagulation
3. CImmune thrombocytopenia (ITP)
4. DAcute leukemia