[Changes in capillary circulation in hypertension of different etiology].

Contact microscopy was used to examine the state of capillary blood flow in the oral cavity mucosa in renal hypertension and in essential hypertension. Simultaneously some of biochemical parameters which influence aggregation of red blood cells were determined (lipids, globulins, fibrinogen content, presence of fibrinogen B in the blood, fibrinolytic and heparin activity of blood plasma). Along with the similarity of the capillaroscopy picture of the blood in both types of hypertension there have been revealed differences which together with other indicators can be applied to differential diagnosis of the diseases. Correlation between these indicators and red cell aggregation has been demonstrated.