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Definition of the five subtypes of CRS
| CRS | Definition |
|---|---|
| CRS type 1 | Acute worsening of heart function leading to AKI |
| CRS type 2 | Chronic abnormalities in heart function leading to progressive CKD |
| CRS type 3 | Acute worsening of kidney function leading to acute heart dysfunction |
| CRS type 4 | CKD leading to chronic heart disease |
| CRS type 5 | Cardiac and renal dysfunction due to acute or chronic systemic disorders |
