Summary
By use of purified contact activation product (CAP) it was possible to show that activation of the contact phase of the coagulation system can lead to a state of hypo-coagulability very similar to that occurring in the experimental Sanarelli-Shwartz-man phenomenon (SSP). The coagulation changes which occurred suggested that the difference between the effects of CAP administration and the typical experimental SSP appeared to be merely quantitative in nature. However, the fact that in our experiments on the classical SSP no stasis thrombi developed as the most significant sign of increased coagulation activity, may suggest that pathogenetically important differences exist.