Disease or condition n % Cardiac insufficiency NYHA II and more 32 47,0 Coronary heart disease 23 33,8 Coumarine therapy 18 26,4 Diabetes mellitus 16 23,5 Thrombocytopenia 9 13,2 ASA score n % ASA 1 0 0,0 ASA 2 34 50,0 ASA 3 34 50,0 ASA 4 0 0,0

Table 1: Most frequent comorbidities and ASA scores.