Sleep quality associate with the increased prevalence of cognitive impairment in coronary artery disease patients: A retrospective case–control study

Background The pathogenesis of cognitive impairment (CI) in coronary artery disease (CAD) patients is still unclear and numerous influence factors could affect the CI status. The current studies suggest that sleep quality and behavior pattern are significant influence factors associated with CAD susceptibility. Methods A total of 223 participants including 90 CAD patients with CI and 133 controls were enrolled into this retrospective study. Demographic information, laboratory test results, clinical diagnostic data, and questionnaire survey were collected to recognize the influencing factors of CI in CAD patients. Appropriate statistical methods are used to analyze these collected data. Results Univariate analysis results of demographic information, laboratory test results, and questionnaire survey data revealed that the differences in fatigue symptom, age, HDL, TG, and sleep quality were statistically significant (p = 0.006, p = 0.000, p = 0.019, p = 0.028, and p = 0.037, respectively). Logistic regression analysis showed that age, fatigue, and sleep quality were the influence factors for CI in CAD population (p = 0.000, p = 0.035, and p = 0.017). Conclusions Sleep quality, fatigue, and age were associated with the increased susceptibility of CI in CAD patients. Both CI state and its related factors were involved in the pathological process of CAD, these findings could offer additional information for the prevention and control of CAD.