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Aim: Retrospective analysis of the underlying causes for death of patients who did and did not seek outpatient medical care (OPMC) for ischemic heart disease (IHD), and discussion of a possibility for using administrative anonymized but individualized databases for analysis., Material and Methods: The electronic database of the Central Administration of the Civil Registry Office of the Moscow Region (Unified State Register of the Civil Registry Office of the Moscow Region), including medical death certificates (MDC) for 2021, was used to select all cases of fatal outcomes with the disease codes of the International Classification of Diseases, Tenth Revision (ICD-10) (codes of external causes, injuries, poisonings excluded) that were indicated as the primary cause of death (PCD). Personalized data of the deceased were combined with data from electronic medical records of patients who sought OPMC at institutions of the Moscow Region within up to 2 years before death. In addition to IHD, the following PCD codes were taken into account: malignant tumors, COVID-19, diabetes mellitus, cerebrovascular diseases, hypertension, chronic obstructive pulmonary disease, alcohol-associated diseases, and, as examples of unspecified PCD, old age and unspecified encephalopathy.Results In total, among those who died from diseases, the proportion of those who died from IHD was 18.9%; for another 8.4%, IHD was indicated as a comorbid disease in Part II of the MDC. Among those who sought OPMC for IHD, the IHD proportion indicated as PCD was 27.5%, and among those who did not seek OPMC 17.4% (p <0.0001). Those who died from IHD and who had sought OPMC were older (mean age, 75.59 ± 10.94 years) than those who died from IHD and had not sought OMPM (mean age, 73.96 ± 10.94 years; p < 0.0001). The frequency of myocardial infarction as PCD among those who had and had not sought OPMC was the same (12%), chronic forms of IHD were 83.9% and 79.7%, the frequencies of "unspecified" acute forms of IHD (codes I24.8-9) were 4.1% and 8.3%, respectively. The proportion of deaths from COVID-19 was the highest (21.7% and 24.3%, respectively), from malignant neoplasms 11.6% and 12.7%, respectively, and from unspecified encephalopathy 10.6% and 10.7%, respectively., Conclusion: Only 25% of patients who had sought OPMC for IHD died from IHD, otherwise the causes of death were the same as for patients who had not sought OPMC for IHD. Analysis of administrative databases allows identifying disparities in the PCD structure and to direct the efforts of specialists to reconciling the criteria for death from various forms of IHD.

Objective: To identify the leading causes of death in the adult population from the class of diseases of the nervous system (DNS, class G) according to medical death certificates (MDC) and to discuss the problems of their assessment., Material and Methods: The source of information was the electronic database of the Main Department of the Civil Registry Office of the Moscow Region. All cases of class G deaths were selected (total 10.739), an analysis was carried out according to underlying cause of death (UCD) codes and the immediate cause of death., Results: In 2022, mortality from diseases included in the DNS amounted to 130.7 per 100 000 of the population over 18 years old (100.3 among men, 191.0 among women). The average age of men is 74.3±14.1, women - 83.5±9.9 years ( p <0.0001) due to the younger age of death of men from «G31.2 Degeneration of the nervous system caused by alcohol» and a higher contribution of this cause to male mortality; 82.5% of deaths were for codes G90-G99 («Other disorders of the nervous system»); 15.5% were neurodegenerative diseases (G10-G32). Sixty-six percent of all UCD in both women and men accounted for «unspecified encephalopathy» (G93.4), in 2nd place (10.5%) was «cerebral cyst» (G93.0). In 45 cases, code G93.6 (cerebral edema) was mistakenly used as UCD. Differences in the structure of causes of death at home, in hospital and elsewhere are statistically significant ( p <0.00001). In 58.3%, cerebral edema and herniation were indicated as the immediate cause of death (G93.6 and G93.5)., Conclusions: Nosologically unfounded, insufficiently well-defined UCD were established in most cases of death from DNS, In 0.5% of the total number of deaths from DNS, an erroneous presentation as UCD of transient disorders of cerebral circulation or cerebral edema was noted. The results indicate the need for an analysis of the causes of death based on a comparison of medical records and MDC.

Objective: Determination of the leading causes of death based on data from primary medical death certificates (MDCs) depending on the place of death., Material and Methods: From the electronic database of the Main Department of the Civil Registry Office of the Moscow Region (the USR registry office system) for 2021, all cases were selected in which diseases were indicated as the primary cause of death (PCD); all codes of external causes, injuries and poisonings were excluded. A total of 109.126 cases, 50.6% died in the hospital, 34% died at home, and 16.4% died elsewhere. Bureau of Forensic Medical Examination (BFME) issued 45.2% of MSS. Taking into account the frequency of use of ICD codes, the clinical similarity of individual codes, 20 groups were formed, which accounted for 90.1% of deaths from diseases., Results: The frequency of registration of individual groups of causes of death largely depends on the place of death. 5 leading groups of causes of death were established: 1) in general from COVID-19 23.55%, chronic ischemic heart disease (CIHD-1) without postinfarction cardiosclerosis, aneurysm and ischemic cardiomyopathy (CMP) 14.5%, from encephalopathy indefinite (EI) 11.4%, malignant neoplasms (MN) 11.3%, stroke 6.2%; 2) in a hospital from COVID-19 45%, stroke 10%, MN 8.3%; CIHD-1 7.1%, CIHD with a history of MI/ischemic CMP 2.7%; 3) at home from CIHD-1 21.8%, EI 21.5%, MN 15.5%, from diseases associated with alcohol 3.3% and brain cyst 3.3%; 4) elsewhere from CIHD-1 22.7%, EI 21.6%, MN 12%, from other forms of acute coronary artery disease 5.4%, alcohol-associated diseases 4.8%. Acute MI ranked 6 th among deaths in general - 2.7%. PCD is also associated with the place of issue of the MDCs - 90% of the MDC with the indication of EI and «other degenerative diseases of the nervous system» as the cause of death were issued by the BFME. Not a single MDC issued by the BFME contained such PCDs as "old age" or "brain cyst"., Conclusion: The nosological structure of the causes of death and the issuance of individual ICD codes in the MDC as a PCD varies significantly depending on the place of death and the issuance of the MDC. The reasons need to be further clarified. The use of codes that are not permitted for use has been registered.

The purpose of the study is to analyze the application of I50.9 code as initial cause of death (PBC) in various subjects of the Russian Federation in 2013-2019. The Rosstat data (Annual forms C41 and C51) based on the "Brief Nomenclature of Causes of Death of Rosstat" (KNPSR) in 2013-2019. The standardized mortality rates (SPS) were determined using corresponding software (state registration number 216661114), coefficient of variation (Cv) and the max/min ratio. In 2013-2019, the regional average value of the SCR from cardiac failure (code I50.9) decreased up to 4 times (from 6.3 ± 10.3 to 1.5 ± 3.5; p <0.0001), but Сv of regional SCR increased by almost 1.5 times (162% and 230%). The percentage of regions where cardiac failure was not indicated as PPP, increased from 8% in 2013 to 19% in 2019. However, only in the Yaroslavl Oblast and the Republic of Buryatia no case of indicating I50.9 code as PPP was registered. In five regions, less than 10 cases were registered in 7 years, in 3 regions an unstable tendency to increase in SDR from HF was established. In 36 regions, more significant variability of RMS from year to year was recorded. From our point of view, the indices are affected in parallel by teo processes: changes in mortality rates associated with chronic heart failure and changes in mortality rates due to approaches to filling out the MSS and coding PPP. To determine the contribution of cardiac failure into population mortality, it is necessary to separate concepts "chronic cardiac failure syndrome" and "cardiac failure as death mechanism" and to introduce uniform rules of indicating chronic cardiac failure syndrome in the MSS.

Chronic heart failure (CHF) is a wide-spread disease (from 7 to 10% in the Russian Federation) and tends to grow. Frequent, repeated hospitalizations of CHF patients are due to insufficient compliance of patients with the treatment and the absence of continuity in management of patients between the hospital and out-patient clinic. Developing a structure of specialized care could provide improvement of treatment quality, a decrease in the number of hospitalizations, and better prognosis. International experience shows that creation of specialized clinics for heart failure improves quality of medical care in CHF and decreases the frequency of re-hospitalizations and mortality. In the Russian Federation, such clinics were created in Nizhniy Novgorod, Ufa, Saint Petersburg, and several other cities. The article presents an expert consensus on the structure, functions, and equipment of departments and offices for patients with heart failure.