acute kidney injury
C1CEFR level
55/100Rarity: uncommon
TechnicalRegister
A sudden decline in kidney function over hours to days, marked by a rise in serum creatinine or a fall in urine output.
His acute kidney injury was likely pre-renal, secondary to dehydration and the NSAIDs he had been taking.
Rarity runs from 0 (a word everyone knows) to 100 (almost never seen outside specialist or literary writing). Level is the word's real difficulty on the CEFR scale, from A1 to C2.
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