How to determine etiology of AKI based on serum and urine electrolytes?
56yF presents to hospital with 5 days of diarrhea. She has not taken any recent medications. Her labs were as follows:
Na 146, K 5.2, Cl 98, Cr 170 (Baseline 68)
Urinalysis demonstrates 1+ protein. Microscopy demonstrates abundant hyaline casts.
Urine Na: 26, Urine Cr 26
What is the cause of her AKI? (Pre-Renal vs ATN vs GN vs Obstructive Uropathy)