Pt with headache, palpitation and diaphoresis, 24-hour urinary of which substance will confirm diagnosis?
سؤال مجاني 1 من 10 اليوم · اشترك وكمّل بدون حد
اعرض الإجابة
الإجابة والشرح
ادخل لحسابك عشان نحفظ إجاباتك ونوريك أخطاءك.
الإجابة: D. Vanillylmandelic acid (VMA) / metanephrines
The confirmatory urine test for pheochromocytoma is a 24-hour urine for metanephrines and catecholamines (VMA is a catecholamine breakdown product); plasma free metanephrines is the most sensitive initial test. Urinary cortisol is for Cushing, 5-HIAA for carcinoid, aldosterone for Conn.
ليش كل خيار صح أو غلط
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A
ليش غلط
24-hour urinary cortisol is one of the screening tests for Cushing syndrome, not a test for pheochromocytoma.
✓ 6• Cushing's Syndrome & Disease [Notes].pdf · p. 5 -
C
ليش غلط
Aldosterone (via the aldosterone-to-renin ratio) is the screen for primary hyperaldosteronism, not for pheochromocytoma.
✓ Step Up To Medicine 6th Edition 2024 (Adrenal).pdf · p. 8 -
D
ليش صح
For pheochromocytoma the confirmatory test is metanephrines and catecholamines in a 24-hour urine (high specificity); vanillylmandelic acid is listed among the example metabolites.
✓ Adrenal disorders (2).pdf · p. 15
- المصدر
- Adrenal disorders (2).pdf · p. 15
- المحاضرة
- Pheochromocytoma · Endocrinology · Module B
- ظهر في
- Endo bank