Abstract

Background: Chronic stress is associated with adverse prognosis in cardiovascular disease, but little is known about its link with health status. We studied the association between chronic stress and health status following acute myocardial infarction (AMI). Methods: In the 24 center US TRIUMPH registry, 4204 AMI patients completed the Perceived Stress Scale-4 (scores range 0-16) during hospitalization. Moderate/high stress over the prior month was defined as scores in the top 2 quintiles (scores=6-16). Patients were assessed at 1 year for disease-specific health status with the Seattle Angina Questionnaire (SAQ) and for generic health status with a Visual Analog Scale (VAS) and the SF-12. Multivariable logistic regression evaluated the independent association between moderate/high stress and poor health status (defined as SAQ angina frequency <100; SAQ physical limitations <75; SAQ QOL <75; VAS <65; SF-12 physical <35; and SF-12 mental <45). Results: After extensive adjustment for demographic, socio-economic and clinical characteristics (including depressive symptoms), AMI patients with moderate/high stress had a greater likelihood of angina and poor disease-specific and generic health status (Figure; p<0.01 for all). Conclusion: Moderate/high stress at the time of an AMI is associated with poor post-AMI health status, even after adjustment for important confounders. Future studies need to examine whether stress mediates observed racial and socio-economic disparities, and whether novel interventions targeting chronic stress can improve post-AMI health status.

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