Table 1. Cardiorenal syndrome (8).

Type	Inciting event	Secondary disturbance	Example
Type 1	Rapid worsening of cardiac function	Acute kidney injury	Acute cardiogenic shock or acute decompensation
Type 2	Chronic abnormalities in cardiac function	Progressive chronic kidney injury	Chronic heart failure
Type 3	Abrupt worsening of kidney function	Acute heart failure or arrhythmia	Acute kidney injury
Type 4	Chronic kidney disease	Decreased cardiac function, ventricular hypertrophy	Chronic glomerular disease
Type 5	Acute or chronic systemic disorder	Combined cardiac and renal dysfunction	Diabetes mellitus, sepsis, vasculitis, sarcoidosis