Acute kidney injury from post renal etiology is caused by:
a. obstruction of the flow of urine.
b. conditions that interfere with renal perfusion.
c. hypovolemia or decreased cardiac output.
d. conditions that act directly on functioning kidney tissue.
A
Acute kidney injury resulting from obstruction of the flow of urine is classified as postrenal or obstructive renal injury. Conditions that result in AKI by interfering with renal perfusion are classified as prerenal and include hypovolemia and decreased cardiac output. Conditions that produce AKI by directly acting on functioning kidney tissue are classified as intrarenal.
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