[Effects on platelet functions].

Platelet adhesiveness was measured in a total of 589 healthy volunteers and patients. Patients suffered from heart failure, diabetes mellitus, myocardial infarction and deep vein thrombosis have a significant higher platelet adhesiveness as healthy volunteers. The effect of the socalled stressors on platelet adhesiveness was shown in vivo; the same values of platelet adhesiveness were seen as in patients. Therefore it can be concluded that stressors constitute a risk factor in patients with altered vessel walls.