TRACTOCILE is administered intravenously in three successive stages: an initial bolus dose (6.75 mg), performed with TRACTOCILE 7.5 mg/ ml solution for injection, immediately followed by a continuous high dose infusion (loading infusion 300 micrograms/ min) of TRACTOCILE 7.5 mg/ ml concentrate for solution for infusion during three hours, followed by a lower dose of TRACTOCILE 7.5 mg/ ml concentrate for solution for infusion (subsequent infusion 100 micrograms/ min) up to 45 hours.