The registry objective is to get information on current epidemiology, diagnostics, treatment and outcome in patients with cardiogenic shock in Poland. Obtained information will help to plan the nationwide initiative for modern cardiogenic shock treatment with established place for mechanical circulatory support. It is hypothesized that the treatment and outcome of cardiogenic shock, including mechanical circulatory support, are currently poor in Poland and should be improved. Unfortunately, without status quo data, efficient planning for its improvement cannot be conducted, hence the CaS-POL registry initiative.