[Cardiorenal syndrome--alternate challenge for nephrologist].

Cardiac diseases are associated independently with a deterioration of renal function and worsening of existing kidney diseases. On the other hand chronic kidney disease is an independent risk factor for increased cardiovascular morbidity and mortality. Cardiorenal syndromes are disorders of the heart and kidneys whereby acute or long-term dysfunction of one organ may induce acute or chronic dysfunction of the other. In these review paper we focused on the pathophysiology and treatment options of five subtypes of the cardiorenal syndrome.