[The effectiveness of Cytoflavin in the medical rehabilitation of elderly and senile patients].

Aim: Study the effectiveness of Cytoflavin in the medical rehabilitation of elderly and senile patients after pneumonia associated with a new coronavirus infection (COVID-19) at the outpatient stage.

Materials And Methods: A prospective observational randomized study involving 66 patients (45 women and 21 men, average age 66.5±5.

Dyakonov surface waves in dielectric crystals with negative anisotropy.

Since the initial discovery of Dyakonov surface waves at a flat infinite interface of two dielectrics, at least one of which is , extensive research has been conducted towards their theoretical and experimental studies in materials with positive anisotropy. The potential applications of these waves were initially limited due to the stringent conditions for their existence and the requirement for position anisotropy. In our study, we present the theoretical prediction and experimental observation of a novel type of Dyakonov surface waves that propagate along the flat strip of the interface between two dielectrics with .

[Analysis of the dynamics of mortality from respiratory diseases in the Russian Federation for 2019-2020].

Aim: To study the dynamics and contribution of mortality from Diseases of the respiratory system (DRS) in 2019 and 2020 to mortality from all causes with and without deaths from COVID-19 in 82 regions of the Russian Federation.

Materials And Methods: The data provided by Rosstat for 2019 and 2020 on the average annual population and the number of deaths due to causes of DRS (class J00J99) were used the standardised death rate (SDR) were calculated, the regional average value, standard deviation and coefficient of variation.

Results: The average increase in the SDR from DRS in 2020 was 22.

[Experience of using a triple fixed combination in the treatment of patients with chronic obstructive pulmonary disease].

Aim: To evaluate the effectiveness of a fixed triple combination of vilanterol/umeclidinium bromide/fluticasone furoate in the treatment of chronic obstructive pulmonary disease (COPD) patients with frequent exacerbations.

Materials And Methods: The study included 46 patients with severe and extremely severe COPD (GOLD 34) with frequent exacerbations. All patients were divided into 2 groups.

[Frequency of albuminuria in patients with bronchial obstructive diseases.].

The aim of the study was to study the frequency and features of albuminuria in patients with chronic bronchoobstructive lung diseases. The prospective study involved 219 patients with COPD (GOLD 1-4) and 201 patients with persistent bronchial asthma (BA) of varying severity, who were examined in 2018-2019. The control group consisted of 48 volunteers, comparable in age and gender.