A 4-year-old boy is being evaluated for abnormal laboratory findings. Serum K+ is 6.4 mEq/L, HCO3– is 20 mEq/L, and DHEA-S is elevated. Which of the following enzymes is most likely deficient in this patient?
11-hydroxylase
17-hydroxylase
21-hydroxylase
Desmolase
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Cut-to-the-chase Answer (0:33):
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HY USMLE Answer (7:55):
