Conditions in which the KIDNEYS perform below the normal level for more than three months. Chronic kidney insufficiency is classified by five stages according to the decline in GLOMERULAR FILTRATION RATE and the degree of kidney damage (as measured by the level of PROTEINURIA). The most severe form is the end-stage renal disease (CHRONIC KIDNEY FAILURE). (Kidney Foundation: Kidney Disease Outcome Quality Initiative, 2002)
Also Known As:
Renal Insufficiency, Chronic; Chronic Kidney Insufficiency; Chronic Kidney Insufficiencies; Chronic Renal Insufficiencies; Kidney Insufficiencies, Chronic; Renal Insufficiencies, Chronic; Kidney Insufficiency, Chronic