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139137 Pharmacology

Local anesthetics:

ABlock the release of neurotransmitters
BBlocks the influx of sodium into the cell
CIncrease the release of inhibitory neurotransmitters
DInhibit the efflux of sodium from neurons
Pharmacology
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139140 Medicine

A 42-year-old woman presents to the clinic complaining of dry skin, fatigue, and weight gain over the past 3 months. She is not on any medications and there is no significant medical history.On physical examination, her blood pressure is 110/70 mm Hg, pulse 52/min, and heart and lungs are normal. Her skin feels rough and dry, but the rest of the examination is normal. Her biochemistry is normal but the thyroid-stimulating hormone (TSH) level is 39 mU/L (0.5-5 mU/L). Which of the following is the most likely cause for her elevated TSH?

Atrauma
Bradioactive iodine ingestion
Cautoimmune hypothyroidism
Dparathyroid surgery
Medicine
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