ABSTRACT
Background: Over the past decades, thrombophlebitis of the saphenous veins (TSV) of the lower extremities has remained one of the most common causes of acute vascular diseases, which requires contact with surgeons. This disease has acquired new risk factors with the advent of a new coronavirus infection. During the time since the onset of infection and up to the present time, many studies have already proven procoagulant effects and endotheliitis, which provoke venous thromboembolic complications. Method(s): We analyzed 379 the outpatient case histories of patients from 2019 to 2021 who applied to a vascular surgeon at polyclinic No. 21 in Ufa and City Clinical Hospital No. 21 with a diagnosis of TSV. Of these, a sample of patients who had a COVID-19 with a polymerase chain reaction confirmed smear, or with signs of viral pneumonia on computed tomography and a COVID-19 was diagnosed. The period from the moment of COVID-19 was limited to 6 months. The number of patients meeting this criterion was: 164 (43.27%). According to the CEAP classification: In 64 (39.02%) C2 stage, in 37 (22.56%)C3, in 8 (4.88%)C4 stage, C6 was in 3 (1.83%) patients, C5 - not a single patient. In 52 (31.71%) patients, there were no signs of previous chronic venous insufficiency. Age of patients: From 48 to 60 years, mean age 56 +/- 4 years. By sex - women - 102 patients (62.19%), men - 62 (37.8%). According to the period from the moment of covid-19 to the onset of thrombophlebitis: In the firstmonth 42 patients, in the period of 2months - 12 patients, in the period of 3 months - 56 patients, in the period of 4 months - 46 patients, in the period of 5 months - 4 patients and after 6 months from COVID-19, TFPV was diagnosed in 2 patients. Result(s): The frequency of episodes of TSV was higher at 1,3,4 months, and the increase prevailed at the end of 3 and the beginning of 4 months. From the anamnesis, in this period of time the intake of anticoagulants prescribed after COVID-19 was completed. In 29 cases, signs of past deep vein thrombosis of the lower extremities were revealed. In 1 case, signs of a past pulmonary embolism, unspecified by prescription, were revealed. Conclusion(s): Episodes of TSV are increased, as after any viral infection, but the role of hypercoagulation syndrome after a COVID-19 is somewhat more important compared to other viral infections. It is worth paying attention to the continuity in relation to the abolition of anticoagulant therapy at the outpatient stage of convalescents of COVID-19..