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CRS Classification.
| CRS Type | Denomination | Description |
|---|---|---|
| Type 1 | Acute cardiorenal | Heart failure leading to acute kidney disease |
| Type 2 | Chronic cardiorenal | Chronic heart failure leading to acute kidney disease |
| Type 3 | Acute renocardiac | Acute kidney disease leading to acute heart failure |
| Type 4 | Chronic renocardiac | Chronic kidney disease leading to heart failure |
| Type 5 | Secondary | Systemic disease leading to heart and kidney failure |
