第二句话没看明白

Why is it necessary to coadminister heparin in the early phases of warfarin treatment?

Heparin coadministration during the first 5 days of warfarin therapy is necessary for two reasons. First, the anticoagulant activity of warfarin does not develop for several days. Second, since the plasma half-life of protein C is only 6 to 10 hours, a hypercoagulable state due to uninhibited thrombin formation can initially develop when warfarin therapy is commenced. This is prevented by heparin coadministration.

因为蛋白质C的血浆半衰期仅为6至10小时，所以开始华法林治疗开始时，不受抑制的凝血酶形成而导致的高凝状态？什么意思？就算凝血酶抑制不充分，也不至于形成高凝？