Level of incongruence during cardiac rehabilitation and prediction of future CVD-related hospitalizations plus all-cause mortality

Abstract

Independent of traditional risk factors, psychosocial risk factors increase the risk of cardiovascular disease (CVD). Studies in the field of psychotherapy have shown that the construct of incongruence (meaning a discrepancy between desired and achieved goals) affects the outcome of therapy. We prospectively measured the impact of incongruence in patients after undergoing a cardiac rehabilitation program. We examined 198 CVD patients enrolled in a 8-12 week comprehensive cardiac rehabilitation program. Patients completed the German short version of the Incongruence Questionnaire and the SF-36 Health Questionnaire to measure quality of life (QoL) at discharge of rehabilitation. Endpoints at follow-up were CVD-related hospitalizations plus all-cause mortality. During a mean follow-up period of 54.3 months, 29 patients experienced a CVD-related hospitalization and 3 patients died. Incongruence at discharge of rehabilitation was independent of traditional risk factors a significant predictor for CVD-related hospitalizations plus all-cause mortality (HR 2.03, 95% CI 1.29-3.20, p = .002). We also found a significant interaction of incongruence with mental QoL (HR .96, 95% CI .92-.99, p = .027), i.e. incongruence predicted poor prognosis if QoL was low (p = .017), but not if QoL was high (p = .74). Incongruence at discharge predicted future CVD-related hospitalizations plus all-cause mortality and mental QoL moderated this relationship. Therefore, incongruence should be considered for effective treatment planning and outcome measurement.

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“…In medical settings, incongruence has been linked to physical health. For example, incongruence predicted cardiovascular-related hospitalizations and all-cause mortality for patients with cardiovascular disease independent of traditional risk factors (Meyer, Stauber, Wilhelm, Znoj, & von Känel, 2015 ). In the workplace, incongruence was associated with job burnout and physical symptoms (Brandstätter, Job, & Schulze, 2016 ) and mediated the relationship between work-life balance and subjective well-being (Gröpel & Kuhl, 2009 ).…”