The Acute Dialysis Quality Initiative classification of cardiorenal syndromes
| General definition Disorders of the heart and kidneys in which acute or chronic dysfunction in one organ may induce acute or chronic dysfunction of the other |
| Type 1: Acute cardiorenal syndrome Acute worsening of cardiac function leading to renal dysfunction |
| Type 2: Chronic cardiorenal syndrome Chronic abnormalities in cardiac function leading to renal dysfunction |
| Type 3: Acute renocardiac syndrome Acute worsening of renal function causing cardiac dysfunction |
| Type 4: Chronic renocardiac syndrome Chronic abnormalities in renal function leading to cardiac disease |
| Type 5: Secondary cardiorenal syndromes Systemic conditions causing simultaneous dysfunction of the heart and kidney |
From House AA, Anand I, Bellomo R, et al. Definition and classification of cardio-renal syndromes: workgroup statements from the 7th ADQI Consensus Conference. Nephrol Dial Transplant 2010; 25:1416–1420.