Kidney Injury After TAVR

A 79-year-old man develops acute kidney injury 1 month after TAVR. Explore the diagnosis based on his history of atheroma and key renal Biopsy findings.

Cholesterol crystal embolization


A 79-year-old man with a history of ischemic cardiomyopathy and chronic kidney disease presented 1 month after a transcatheter aortic-valve replacement (TAVR) with a serum creatinine level of 4.0 mg per deciliter (350 μmol per liter), up from a baseline of 1.6 mg per deciliter (140 μmol per liter). Renal biopsy is shown. What is the most likely diagnosis?

What is the most likely diagnosis?

Calcium oxalate deposition
Ischemic acute tubular necrosis
Renal artery infarction
Cholesterol crystal embolization
Cryoglobulinemic vasculitis

Acute Kidney Injury, Atheroembolism, Cholesterol crystal embolization, Renal Biopsy, TAVR

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