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Retired NBME Free 120 Answers

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submitted by โˆ—bwdc(697)
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This patient has chronic kidney disease, as indicated by elevated serum creatinine/BUN and evidence of anemia of chronic disease (normochromic normocytic). Poorly functioning kidneys do not hydroxylate 25-dihydroxycholecalciferol to 1,25-dihydroxycholecalciferol well nor produce adequate erythropoietin (hence the CKD-related anemia). Patientโ€™s with CKD thus develop secondary hyperparathyroidism due to deranged phosphate excretion and inadequate Vitamin D activation resulting in hypocalcemia. Thus, we should expect to see low calcium, high phosphorus, low 1,25 vitamin D, and low Epo.

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houseppary  Any guesses as to why he might have CKD at 4 y.o.? +2
drpee  Possibly ARPKD? +1



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