The second factor is a state of hypercoagulation, where altered amounts of clotting factors increase primary or secondary hemostasis.

第二个因素是高凝状态，高凝状态下凝血因子数量增多，会增强初期或二期凝血。

The three main causes: stasis, hypercoagulation of clotting factors, and damage of the endothelial lining are often referred to as Virchow's triad.

三大危险因素包括血流瘀滞、高凝状态、内皮损伤，被称为Virchow三角理论。