Toronto Aortic Stenosis Quality of Life Questionnaire (TASQ): Validation in Polish Patients with Aortic Stenosis

Background/Objectives: Quality of life (QoL) is recognized as a clinically significant outcome measure among patients with aortic stenosis (AS). However, there is no validated, AS-specific questionnaire available in Poland for assessing the QoL in AS patients. The aim of the study was to determine the psychometric properties of the Polish version of the Toronto Aortic Stenosis Quality of Life Questionnaire (the TASQ). Methods: The study involved 113 patients with severe AS (including 59 women), aged 74 to 82 years [mean age 77 years], hospitalized at the department of cardiology in 2024. The standardized questionnaires were used to assess the level of QoL, the TASQ, and the Minnesota Living with Heart Failure Questionnaire (the MLHFQ). Results: The mean QoL level assessed by the TASQ was 60.72 +/- 22.82. The Cronbach's alpha for the entire TASQ was 0.919, for the emotional impact subscale 0.873, and for the physical limitation subscale 0.861. Satisfactory values of fit measures were obtained for a five-factor structure (RMSEA < 0.01; CFI > 0.99). The loadings of each item were statistically significant (p < 0.001). The MLHFQ score correlated significantly (p < 0.001) and positively (r > 0) with the score on the scales of physical symptoms (r = 0.479), physical limitations (r = 0.662), social limitations (r = 0.597), emotional impact (r = 0.638), and overall QoL (r = 0.712). Conclusions: Patients with severe AS exhibit low QoL. The TASQ has very good psychometric properties and can be used to assess the QoL in the population of Polish patients with AS.