COVID-19, neutrophil extracellular traps and vascular complications in obstetric practice

An issue of the novel coronavirus infection spreading is currently in the first place among others in the list of the international medical community. Due to lack of information, conflicting research findings, multicomponent effect of the virus on the body host, as well as various consequences that the virus triggers in the body, now every medical specialty does study the viral attack pathogenesis. Recent months showed that vascular complications are the most severe in the Coronavirus Disease 2019 (COVID-19) and are the main cause of death in the patients. The mechanisms of vascular complications are complex and affect both the hemostatic system and immune responses, "inflammatory storm", disorders of the renin-angiotensin-aldosterone system, endotheliopathy, etc. Due to the leading role of vascular complications in the viral infection pathogenesis, several groups of patients are at extra risk, including pregnant women, patients with a burdened obstetric history, with hereditary thrombophilia and antiphospholipid syndrome, and patients after in vitro fertilization (IVF). In this category of pregnant women, use of low-molecular-weight heparins (LMWH) is particularly important for both prevention of vascular and obstetric complications, and for pathogenetic therapy of COVID-19

COVID-19, hemostasis disorders and risk of thrombotic complications

The spread of a new coronavirus infection worldwide since the end of 2019 has becomes a pandemic Thrombotic complications are the leading cause of death in this disease After entering the human body, the virus starts a cascade of reactions leading to the development of a cytokine storm, activation of all parts of the hemostasis and complement systems and other changes that result in disturbances in the circulation system with the development of multiple organ failures Numerous studies have shown that a predictor of a severe course of COVID-19 is a sharp increase of D-dimer concentration in the blood and rise of some other markers of hemostasis activation Based on the pathogenesis, the developed schemes for the prevention and treatment of COVID-19 severe complications include low molecular weight heparins (LMWH) which are also recommended for an outpatient COVID-19 patient The prescription of low molecular weight heparin, the duration of their use and doses should be decided on the basis of a risk assessment of factors for each individual patient in combination with laboratory monitoring Распространение новой коронавирусной инфекции по всему миру с конца 2019 г превратилось в пандемию Тромботические осложнения являются ведущей причиной смерти при этом заболевании После попадания в организм человека вирус запускает каскад реакций, приводящих к развитию цитокинового «шторма», активации всех звеньев системы гемостаза и комплемента, другим изменениям, приводящим к нарушениям в системе кровообращения с развитием полиорганных нарушений Многочисленные исследования показали, что предиктором тяжелого течения заболевания является резкое повышение концентрации D-димера в крови и некоторых других маркеров активации гемостаза Исходя из патогенеза, разработанные схемы профилактики и лечения тяжелых осложнений COVID-19 включают низкомолекулярные гепарины, которые также рекомендуют для применения в амбулаторных условиях Назначение низкомолекулярных гепаринов, длительность их применения и дозы должны определяться на основе оценки факторов риска для каждого отдельного пациента в сочетании с лабораторным мониторинго

Administration of antenatal corticosteroid is associated with reduced fetal growth velocity: a longitudinal study

To elucidate whether antenatal administration of corticosteroids in pregnancies with threatened preterm labor affects growth velocity