Aim. To evaluate the impact of a mobile application usage on the self-care skills, quality of life, adherence to treatment, as well as the psychological characteristics of comorbid patients with stable coronary heart disease.Material and methods. The study will include patients over 18 years of age with an established diagnosis of ischemic heart disease, exertional angina pectoris I-IV CCS functional class, who have the technical ability to use the mobile application "B2Doc: Angina" on their smartphone. This mobile application contains main components of recommendations for the management of coronary heart disease and monitoring of patient’s well-being. The program is based on the previously developed and validated questionnaire of the self-care ability of patients with coronary artery disease. The mobile application includes advice of the day, tracking the dynamics of angina pectoris symptoms, blood pressure and pulse, a medication diary as well as educational material about coronary heart disease. The study will assess quality of life: general (SF-36) and angina-related (Seattle Angina Questionnaire), self-care skills using the Self-Care of Coronary Heart Disease Inventory questionnaire. The primary endpoints will be cardiovascular events (cardiovascular death, acute myocardial infarction, acute cerebrovascular accident, hospitalization with unstable angina or decompensated chronic heart failure) and death from all causes. Endpoints will be evaluated in 1, 3, 6 and 12 months after discharge.Expected results. We expect that the use of the mobile application "B2Doc: Angina" by patients will improve their self-care skills and quality of life, as well as increase awareness of the disease.Conclusions. The use of the newly developed mobile application "B2Doc: Angina" is a potential tool for the prevention and treatment of coronary heart disease. It represents a promising solution for the rapid implementation and expansion of telemedicine practice.
Aim. This study sought to translate, cross-culturally adapt, and psychometrically validate the Coronary Artery Disease Education Questionnaire II (CADE-Q II) in Russian.Material and methods. Independent translations and back-translations of the CADE-Q II were conducted by bilingual health professionals and certified translators, respectively. Experts met to consider cultural relevance of the items to Russian patients. The finalized version was then pilot tested in a group of patients to assess understanding and time to complete the tool. Following these steps, 303 patients with a diagnosis of stable coronary artery disease treated in the Outpatient Cardiology Department between April and November 2021 completed the CADE-Q II. The following psychometric properties were evaluated: confirmatory factor analysis, internal consistency (assessed by Cronbach's alpha), test-retest reliability (ICC), and criterion validity (assessed through the association with CADE-Q II and The Self Care of Coronary Heart Disease Inventory and SF-36 scores, among other characteristics from the participants including educational level).Results. After items were translated, revised, culturally adapted and finalized, 30 patients took 30 minutes to complete the CADE-Q II during pilot test and questionnaire was considered understandable by all. Factor analysis (Kaiser-Meyer-Olkin =0.692 and Bartlett's criterion of Sphericity <0.05) revealed four factors, all internally consistent and aligned with the original version of the questionnaire. Cronbach's alpha of subscales ranged from 0.61 to 0.88 and ICC was 0.81. Criterion validity was confirmed by significant differences in total CADE-Q II scores by participants' educational level and correlations between CADE-Q II and The Self Care of Coronary Heart Disease Inventory scores (r=0.251, p<0.05).Conclusion. The Russian CADE-Q II presented sufficient validity and reliability for use to assess disease-related knowledge of chronic coronary syndrome patients in Russia.
Aim. Validation and evaluation of psychometric parameters of the Russian-language version of the Coronary Artery Disease Education Questionnaire II (CADE-Q II) in patients with chronic coronary syndromes (CCSs).Material and methods. The study involved 303 patients with stable coronary artery disease (CAD) who were hospitalized in the cardiology department in April-November 2021. All patients admitted underwent a standard examination and treatment, adopted in the management of patients with CCSs. In addition, we analyzed socio-demographic parameters (marital status, education level, occupation, disability, income level), quality of life (using SF-36 and SAQ questionnaires), levels of anxiety and depression (HADS scale), personality type D (DS-14 questionnaire), adherence to treatment (four-item Morisky-Green Medication Adherence Scale), Charlson comorbidity index, The Self Care of Coronary Heart Disease Inventory (SC-CHDI), and CADE-Q II. The validation process of new questionnaire was carried out in several stages as follows: translation, pilot testing, reliability assessment, constructive and criterion validity assessment.Results. Test-retest reliability of the questionnaire’s scales was 0,81, while Cronbach’s alpha varied from 0,613 to 0,877, which indicates its sufficient reliability. The confirmatory factor analysis confirmed the correspondence of the obtained model to the experimental one. The criteria validity of the questionnaire revealed correlation between the scales with the level of patient’s general education (r=0,391, р<0,01), “selfcare confidence” scale of the SC-CHDI (r=0,251, р<0,05), “Vitality” component of the SF-36 (r=0,225-0,284, р<0,05), “Mental Health” component of the SF-36 (r=0,308, р<0,01). In addition, a weak negative relationship was found between the blocks “Physical exercises” and “Psychosocial risks” with age (r=-0,237, p<0.05 and r=-0,229, p<0.05, respectively).Conclusion. The Russian-language version of the CADE-Q II has sufficient psychometric indicators and is a valid tool for assessing the self-care ability of patients with CAD.
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