[Coronavirus infection and risk of postoperative venous thromboembolic events].

Objective: To determine whether patients with perioperative or previous coronavirus infection (CVI) have a greater risk of venous thromboembolic events VTE).

Material And Methods: A multiple-center regional prospective retrospective cohort study included elective and emergency patients who underwent surgery in November 2020. The primary endpoint was VTE (PE/DVT) within 30 days after surgery.

[How long must be an elective surgery delayed after SARS-COV-2 diagnosis? (Multiple-center regional research)].

Objective: To determine the optimal postponement period for elective surgery in patients with SARS-COV-2 infection.

Material And Methods: A multiple-center regional prospective cohort research included patients who underwent elective surgeries in November, 2020. We compared the outcomes in patients with preoperative COVID-19 and those without infection.

[Treatment of trophic ulcers in chronic venous insufficiency using bio-transplants].

The results of treatment of 66 patients with trophic ulcer in postthrombophlebitic syndrome, using biological lining, manufactured from mollusc of Cephalopoda genus owing properties of semipermeable biological membrane, were analyzed. Application of biogenic linings had promoted the results of patients treatment improvement due to quickening of epithelization and formation of ripe granular tissue.