Abstract
Vitamin D deficiency is one of the important indicators determining the pathogenetic mechanisms that aggravate the course of COPD, supporting the
extremely strong influence of COPD on the patient's life and 2.4 times more often with a 4-year survival rate of 18%. The use of a therapeutic dose of vitamin D in the complex of COPD treatment standards determined the therapeutic effectiveness after treatment in the form of a 2.1-fold decrease in the degree of shortness of breath, a 45.9% decrease in the severity of bronchial obstruction, and a 41.0% decrease in the effect of the disease on the patient's health and life. There was a significant decrease compared to the control of course doses of steroids (by 48%) and the length of hospital stay (by 29.8%).
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