**1. Introduction**

Chronic obstructive pulmonary disease (COPD) is an urgent problem of modern pulmonology. Currently, COPD is in third place on the list of causes of death in the world and mortality from it continues to grow [1]. The main cause of death in patients with COPD is the progression of the underlying disease, which is most often caused by frequent severe exacerbations. Exacerbations of COPD negatively affect the patient's quality of life, worsen symptoms, and accelerate the rate of decline in lung function, and are associated with significant mortality [2]. About 50–80% of COPD patients die from respiratory causes [3]. So, comorbid pathology is an integral feature of COPD, and 50% of the causes of fatal cases are "extrapulmonary" [4].

## **1.1 Goal**

Identification of risk factors for repeated hospitalizations associated with exacerbation of the chronic obstructive pulmonary disease, followed by an assessment of the quality of care provided to patients at the outpatient and hospital stages.
