Complex sentence: This narrowing of the renal artery can impede blood flow to the target kidney, resulting in high blood pressure; and atrophy of that kidney, which can lead to unilateral chronic kidney disease, including kidney failure.
Split into simpler sentences: This narrowing of the renal artery can impede blood flow to the target kidney, resulting in high blood pressure. Atrophy of the kidney with decreased blood flow may occur, which can lead to unilateral chronic kidney disease, including kidney failure.