ورقة عمل القيم المخبرية والشوارد مع الإجابات

Why is "free T₄" often measured rather than total T₄?

1. AThe free form is the only form made by the gland
2. BThe free form is the unbound, active hormone
3. CThe free form is the form excreted in urine
4. DThe free form is stored inside the pituitary

In a standard 2-hour oral glucose tolerance test, what does the patient do?

1. AFasts for 3 days, and glucose is checked every morning before breakfast
2. BEats a normal meal, and glucose is checked once later that evening
3. CReceives an insulin injection, and glucose is checked each hour
4. DDrinks a measured glucose solution, and glucose is checked 2 hours later

على ماذا يدل اختبار الكيتونات الإيجابي في الدم أو البول بشكل أساسي؟

1. Aأن الكبد ينتج بيليروبين زائدًا
2. Bأن الجسم يحلل الدهون للحصول على الوقود، كما في نقص الإنسولين أو التجويع
3. Cأن الكليتين تسربان البروتين إلى البول
4. Dأن المريض مصاب بعدوى في المسالك البولية

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 low serum magnesium
3. CA low serum sodium
4. DA high serum calcium

A patient's potassium is unexpectedly 5,8 mEq/L. The sample was taken after the tourniquet was on for several minutes while the patient pumped their fist. What is the best interpretation?

1. AThe result may be falsely high and should be repeated with better technique
2. BFist pumping lowers potassium, so the true level is even higher
3. CTourniquet time affects only the glucose result, not the potassium
4. DThe result confirms true hyperkalemia and needs no further checking

A patient had a total thyroidectomy yesterday. Which laboratory value is most important to monitor in the first days after surgery?

1. ASerum potassium
2. BSerum glucose
3. CSerum sodium
4. DSerum calcium

A man of Mediterranean descent develops dark urine, jaundice and a falling hemoglobin a few days after eating fava beans. Which condition is most likely?

1. AVitamin B₁₂ deficiency anemia
2. BIron-deficiency anemia from poor diet
3. CSickle cell crisis with vaso-occlusion
4. DG6PD deficiency with acute hemolysis

مريض بمرض رئوي قديم، بيكربونات مصله 32 mEq/L، وPaCO₂ الشرياني مرتفع دائمًا، وpH يبلغ 7,36. أي حالة تناسب أكثر؟

1. Aإسهال حاد شديد مع فقد كبير للبيكربونات
2. Bحماض كيتوني سكري حاد مع جفاف شديد وقيء
3. Cجرعة زائدة حادة من الأسبرين مع تنفس سريع
4. Dداء الانسداد الرئوي المزمن مع احتباس مزمن لثاني أكسيد الكربون وتعويض استقلابي