 |  Endocrinology- 2 60 Flashcards |  Start |
 | What is the most common symptom of pheochromocytoma? |  Card: 1 / 60 |
| Headaches | Card: 2 / 60 |
| Which imaging study is preferred for assessing medullary pheochromocytomas? | Card: 3 / 60 |
| MRI abdomen | Card: 4 / 60 |
| What percentage of pheochromocytomas are extraadrenal? | Card: 5 / 60 |
| 15% | Card: 6 / 60 |
| Which test is more sensitive for screening pheochromocytoma: 24-hour urinary fractionated metanephrines or 24-hour urinary vanillylmandelic acid? | Card: 7 / 60 |
| 24-hour urinary fractionated metanephrines | Card: 8 / 60 |
| What is the definitive treatment for pheochromocytoma? | Card: 9 / 60 |
| Surgical resection | Card: 10 / 60 |
| In which condition is the T3 resin uptake increased? | Card: 11 / 60 |
| TBG deficiency | Card: 12 / 60 |
| What is the typical blood profile in a newborn with hypothyroidism due to endemic cretinism? | Card: 13 / 60 |
| Decreased T3 and T4, elevated TSH | Card: 14 / 60 |
| Which thyroid dysfunction is characterized by low T3 syndrome? | Card: 15 / 60 |
| Sick euthyroid syndrome | Card: 16 / 60 |
| What is the primary cause of primary thyrotoxicosis? | Card: 17 / 60 |
| Graves' disease | Card: 18 / 60 |
| What distinguishes primary from secondary thyrotoxicosis in terms of TSH levels? | Card: 19 / 60 |
| Primary has decreased TSH; secondary has elevated TSH. | Card: 20 / 60 |
| Which medication is used to manage hypertensive crises during pheochromocytoma surgery? | Card: 21 / 60 |
| Intravenous nitroprusside | Card: 22 / 60 |
| Which condition may cause thyroid storm during surgery? | Card: 23 / 60 |
| Toxic nodular goiter | Card: 24 / 60 |
| What is the role of Lugol's iodine in preventing thyroid storm? | Card: 25 / 60 |
| Reduces thyroid size and decreases iodine trapping. | Card: 26 / 60 |
| What is the characteristic symptom of myxedema coma? | Card: 27 / 60 |
| Hypothermia with a core temperature of less than 35°C. | Card: 28 / 60 |
| What test confirms insulinoma after a 72-hour fast? | Card: 29 / 60 |
| Plasma insulin and C-peptide levels | Card: 30 / 60 |
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| What is the most common type of gastroenteropancreatic neuroendocrine tumor? | Card: 31 / 60 |
| Insulinoma | Card: 32 / 60 |
| What is the common cause of hypoglycemia in critically ill patients? | Card: 33 / 60 |
| Critical illnesses | Card: 34 / 60 |
| What is the hallmark of pseudohypoparathyroidism? | Card: 35 / 60 |
| Elevated PTH levels with hypocalcemia. | Card: 36 / 60 |
| Which condition leads to hypomagnesemia and hypocalcemia? | Card: 37 / 60 |
| Gitelman syndrome | Card: 38 / 60 |
| Which drug is the first-line treatment for acute hypercalcemia? | Card: 39 / 60 |
| Bisphosphonates | Card: 40 / 60 |
| What is the most common cause of asymptomatic hypercalcemia? | Card: 41 / 60 |
| Primary hyperparathyroidism | Card: 42 / 60 |
| What is the typical daily replacement dose of levothyroxine in patients with no residual thyroid function? | Card: 43 / 60 |
| 1.6 µg/kg body weight | Card: 44 / 60 |
| What is the relationship between serum calcium and magnesium levels? | Card: 45 / 60 |
| Typically related, but exceptions exist in conditions like chronic renal failure. | Card: 46 / 60 |
| Which thyroid condition presents with elevated T4 and T3 levels and decreased TSH? | Card: 47 / 60 |
| Graves' disease | Card: 48 / 60 |
| What is the typical age range for insulinoma occurrence? | Card: 49 / 60 |
| 40 to 50 years | Card: 50 / 60 |
| What is the difference in T3 and T4 levels in secondary thyrotoxicosis? | Card: 51 / 60 |
| Both T3 and T4 are elevated along with elevated TSH. | Card: 52 / 60 |
| What is the primary treatment for patients over 45 years with hyperthyroidism? | Card: 53 / 60 |
| Radioiodine (I-131) therapy | Card: 54 / 60 |
| What is the effect of anti-thyroid drugs like propylthiouracil? | Card: 55 / 60 |
| They inhibit the coupling reaction in thyroid hormone synthesis. | Card: 56 / 60 |
| What is the significance of the heel prick test in hypothyroidism screening? | Card: 57 / 60 |
| Most effective for detecting endemic cretinism. | Card: 58 / 60 |
| What is a common feature of thyrotoxicosis related to the nervous system? | Card: 59 / 60 |
| Nervousness and irritability | Card: 60 / 60 |
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