We studied clinical and ultrasonographic parameters in pregnant women - 183 with and 152 without gestational arterial hypertension (GAP). Characteristics of women with GAP were as follows: age 16-45 years, mean age 27.9+/-4.7 years, disease duration 8.8+/-4.0 weeks, mean systolic and diastolic blood pressure at initial examination 150.2+/-4.8 and 93.1+/-6 mm Hg, respectively. Results of this study allowed us to make the following conclusions. Social, historical, constitutional parameters can contribute to the development of hypertension during pregnancy. GAP is associated with development of hypertrophy of left ventricular myocardium and its subsequent remodeling, hypertrophy and dilatation of the right ventricle, i.e. formation of morphological substrate for heart failure. Dynamics of echocardiographic structural-geometrical parameters of pregnant women with GAP is related to type and degree of hypertension.