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Factors associated with in-hospital mortality in patients after acute cerebrovascular accident (according to the REGION-M register)

Aim. To determine the main factors associated with in-hospital mortality in patients after acute cerebrovascular accident based on the medical history data. Material and methods. The study used the data of retrospective hospital part of the REGION-M register, which included all patients hospitalized in one Moscow city clinical hospital from January 1, 2012 to March 30, 2017 with stroke and transient ischemic attack. We analyzed the presence of following parameters’ information in case histories of patients who died in hospital and those who were discharged: risk factors (RF), socio-demographic factors, history of cardiovascular and concomitant diseases. The association of factors recorded at hospital admission with mortality rate was studied, and multivariate logistic regression was constructed. A combination of factors significantly associated with in-hospital mortality was determined. Results. Of 900 patients (365 (40,6%) men and 535 (59,4%) women) included in the REGION-M register, 216 (24,0%) died in the hospital. Assessment of the RF information presence showed that the smoking data was disclosed in 54,3% of case histories, family history — 1,1%, education level — 8,6%, alcohol consumption — 7,4%, disability — 79,1%, hypercholesterolemia — 6,4%. However, there were no significant differences on the completeness of the data collection on the listed RF between deceased and discharged patients. Factors such as gender, age, and outcome were described in all case histories. Univariate analysis of factors significantly associated with patients’ mortality marked out age and history of cardiovascular diseases (coronary artery disease (CAD), atrial fibrillation (AF), venous thrombosis) and/or concomitant diseases (diabetes, anemia). Multivariate logistic regression identified factors associated with increased in-hospital mortality as follows: CAD, AF, diabetes, venous thrombosis. Conclusion. Hospital-based physicians pay little attention to the recording of cardiovascular RF and socio-demographic parameters in patients with stroke, regardless of the condition severity and outcome. In-hospital mortality is associated with age, CAD, AF, diabetes, and venous thrombosis.