Effect of interval hypoxic therapy in the hypoxia-hyperoxia mode on the hemostatic system of patients who have suffered a new coronavirus infection COVID-19

Background. The positive effect of interval hypoxic therapy in the treatment of many diseases has become the basis for its use in rehabilitation after a new coronavirus infection to normalize disorders of the hemostatic system. Aim. To identify the peculiarities of the interval hypoxic therapy effect on the hemostatic system of patients who have suffered a new coronavirus infection. Material and methods. The work was carried out from April 2020 to May 2022. 220 men aged 4559 years (average age 48.82.4 years) were examined. The main group included 90 people who had a moderate coronavirus infection a month ago; the control group (n=70) was represented by relatively healthy people; the comparison group (n=60) suffered coronavirus infection and underwent standard rehabilitation without hypoxic therapy. The content of platelets, D-dimer, international normalized ratio, prothrombin time, activated partial thromboplastin time, antithrombin III activity, interleukin-6 level, and C-reactive protein content in the blood serum was determined. To assess statistically significant differences, a parametric method applying paired and unpaired Student's t-test was used. Differences were considered statistically significant at p 0.05. Results. In patients of the main group, a violation of the hemostatic system, indicating increased thrombogenicity of the blood against the background of persistent inflammatory activity, was revealed. After interval hypoxic therapy, the platelet count increased to 215.5323.57109/l (p=0.035), activated partial thromboplastin time to 26.741.84 s (p=0.035), international normalized ratio to 0.890.06 (p=0.005), antithrombin III activity in the blood up to 81.814.33% (p=0.007); the level of fibrinogen decreased to 3.861.09 g/l (p=0.035) and the content of D-dimer in the blood to 255.5817.36 ng/ml (p=0.035). There was a decrease in the level of interleukin-6 to 6.030.65 pg/ml (p=0.035) and C-reactive blood protein to 1.030.15 mg/l (p=0.035). Conclusion. Interval hypoxic therapy had a normalizing effect on the hemostatic system of patients who suffered a new coronavirus infection, as a result of suppressing the inflammatory process in the body.