Table 1.

Types of Cardio-renal syndrome (CRS)

Type of CRS	Definition	Conditions
Type 1: Acute CRS	Acute worsening of heart function leading to kidney injury and/or dysfunction	Acute HF, Acute cardiogenic shock
Type 2: Chronic CRS	Chronic abnormalities in heart function leading to progressive and permanent CKD	Chronic HF
Type 3: Acute Renocardiac syndrome	AKI causing acute heart dysfunction	Acute glomerunephritis/ AKI cause acute HF,
Type 4: Chronic Renocardiac syndrome	CKD leading to chronic heart disease and CKD progression	CKD cause cardiac hypertrophy, decreased cardiac function
Type 5: Secondary CRS	Systemic diseases leading to heart and kidney damage/dysfunction	Diabetes, sepsis, septic shock

CRS: Cardio Renal Syndrome, HF: Heart failure, AKI: Acute Kidney Injury, CKD: Chronic Kidney damage