The aim of the study was to identify the dominant types of rhythm disturbances in pregnant women, to discuss the features of the pathogenesis of ventricular arrhythmias during pregnancy, the relevance of pre-gravidar diagnosis, the expediency of using antiarrhythmic drugs during gestation. Basics. Proarrhythmic mechanisms of pregnancy are associated with cardiovascular, vegetative and hormonal changes. The risk factor for complications is a previous cardiological disease. Ventricular extrasystoles are the most common. The risk of pregnancy complications increases with persistent rhythm disturbances. Conclusions. Pregnancy is associated with an increased risk of arrhythmias. Patients with a burdened history are at significant risk of relapse during pregnancy. Conducting a thorough examination of women at risk at the stage of pre-pregnancy preparation will allow timely corrective treatment.