In this randomized clinical trial with 1000 patients the incidence of radial artery occlusion (RAO) was significantly lower in the group with shorter compresion time (3 vs 8 hours) after the invasive procedure (coronary angiography and intervention). Morover in case of RAO immediately after hemostasis one hour ulnar artery compression was associated with significant reduction of final RAO.This rescue artery recanalization was effective in >50% of cases but only in the short hemostasis group with final RAO 1,4% vs 10,1% in these two groups.