ورقة عمل القيم المخبرية والشوارد مع الإجابات

Serum amylase is less specific than lipase for pancreatitis because amylase also comes from:

1. AThe heart muscle
2. BThe bone marrow
3. CThe thyroid gland
4. DThe salivary glands

Which drug is routinely monitored with blood levels because of its narrow therapeutic range?

1. AOmeprazole
2. BLoratadine
3. CAmoxicillin
4. DLithium

Which sample is commonly used to screen a patient for MRSA carriage on admission?

1. AA swab from the front of the nose
2. BA blood culture from one arm
3. CA sample of stool sent for culture
4. DA clean-catch midstream urine sample

A patient with iron-deficiency anemia started oral iron. Which result is usually the earliest sign that treatment is working?

1. AA fall in the mean cell volume (MCV)
2. BA rise in the platelet count
3. CA rise in the reticulocyte count
4. DA fall in the white cell count

A patient on carbamazepine becomes confused and has a headache. Which laboratory result would most likely explain this?

1. AA high serum potassium
2. BA high serum calcium
3. CA low serum magnesium
4. DA low serum sodium

A patient takes high-dose biotin supplements for hair and nails. Why should the nurse report this before blood tests?

1. ABiotin lowers the hemoglobin by destroying the red cells
2. BBiotin causes a true rise in blood glucose in all patients
3. CBiotin can distort some immunoassays, such as troponin or TSH
4. DBiotin makes the blood clot in the tube before testing

أُدخل مريض صوديومه 132 mEq/L وسكر دمه 600 mg/dL (33,3 mmol/L). لماذا تُفسَّر قيمة الصوديوم بحذر؟

1. Aلا بد أن نتيجة الصوديوم خطأ مخبري
2. Bيسحب الغلوكوز المرتفع الماء إلى الدم فيخفف الصوديوم
3. Cليس للغلوكوز أي تأثير في الصوديوم المقاس
4. Dيرفع الغلوكوز المرتفع الصوديوم المقاس كاذبًا، لذلك هو في الحقيقة أقل

A woman with preeclampsia is receiving IV magnesium sulfate. Her urine output has fallen and her creatinine is rising. Why is this a concern?

1. AMagnesium is broken down by the liver, so it will stop working soon
2. BPoor kidney function makes the magnesium level fall quickly
3. CMagnesium causes potassium loss, so the kidneys release more fluid
4. DMagnesium is excreted by the kidneys, so it can build up to toxic levels