Table 1.

Cardiorenal syndrome definitions.

Adapted from Ronco et al. 2010 [2]

Syndrome	Definition
Type I (acute cardiorenal)	Sudden decline in heart function leading to acute kidney injury and dysfunction
Type II (chronic cardiorenal)	Chronic impairment in heart function leading to chronic kidney disease
Type III (acute reno-cardiac)	Sudden decline in kidney function leading to cardiac injury and dysfunction
Type IV (chronic reno-cardiac)	Chronic kidney disease leading to heart injury, disease, or dysfunction
Type V (secondary Cardiorenal syndrome)	Systemic illness leading to simultaneous cardiac and renal impairment