The use of combined hormonal contraception in the context of the COVID-19 pandemic

Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV2) was declared the cause of a global pandemic in early 2020. Patients with COVID-19 are at high risk for thrombotic occlusions of the arteries and veins. There are many ways that explain the high risk of thrombosis in COVID-19, they are conditionally divided into two main categories: mechanisms in which the renin-angiotensinaldosterone system is involved and mechanisms that affect the regulation of the immune response. It is assumed that the uncomplicated course of the disease is characterized by endothelial dysfunction, but if the process progresses with a pronounced immune response, plasma coagulation factors may also be involved, which significantly increases the risks of thromboembolic complications. The use of combined hormonal contraception (CHC) in the current conditions raises a number of concerns. According to some researchers, disorders of the hemostasis system observed in patients with COVID-19 may worsen while taking CHC and increase the risk of thromboembolic complications, which is especially important in severe disease with prolonged immobilization. However, with the use of CHC, the increase in thrombotic risks is explained primarily by changes in the plasma component of the hemostasis sys tem. At first glance, the recommendations to stop hormone therapy with confirmed COVID-19 seem logical, but they are based only on the procoagulant activity of estrogens, and not on real evidence. In patients with COVID-19, the increase in coagulation is associ ated with massive damage to the vascular endothelium (the so-called «external» coagulation pathway) and the immune response, and not with a primary increase in the level of coagulation factors per se. At the same time, stopping the intake of estrogens deprives the patient of their important protective effect. Thus, it became necessary to develop clinical guidelines for the management of women using contraception in the context of the COVID-19 pandemic.