Plasma Clotting Time and Serum Calcium of Patients Recovered from Attacks of Coronary Thrombosis

Results and Conclusions

The data presented in Table I show that there was no significant difference in the prothrombin time, in the plasma clotting time as indicated by the appearance of fibrin, or in the serum calcium content of the blood serum of persons who had suffered attacks of coronary thrombosis when compared with a group of controls. There was a difference in the interval between the appearance of fibrin and the formation of a solid clot of 7.4 seconds in the control series and of 13.2 seconds in the group of thrombosis cases. This difference was found to be significant when analyzed by the t test of Fisher. 4 Since the time for the appearance of fibrin was practically the same for the 2 groups, this means that the blood of the thrombosis patients did not form a solid clot so readily as did that of the controls. Obviously, this difference indicates a tendency to a longer and not a shorter coagulation time of the blood of patients who have had attacks of coronary thrombosis.