Personality, disease severity, and the risk of long-term cardiac events in patients with a decreased ejection fraction after myocardial infarction

Circulation
Johan Denollet, Dirk L Brutsaert

Abstract

Patients with myocardial infarction (MI) with a decreased left ventricular ejection fraction (LVEF) have a poor prognosis, but the role of emotional stress in prognosis is not known. We hypothesized that emotional stress in these patients (1) is unrelated to the severity of cardiac disorder, (2) predicts cardiac events, and (3) is a function of basic personality traits. Eighty-seven patients with MI (age, 41 to 69 years) with an LVEF of < or =50% underwent psychological assessment at baseline. Patients and their families were contacted after 6 to 10 years (mean, 7.9 years); cardiac events were defined as cardiac death or nonfatal MI. Emotional distress was unrelated to the severity of cardiac disorder. At follow-up, 21 patients had experienced a cardiac event (13 fatal events). These events were related to LVEF of < or =30%, poor exercise tolerance, previous MI, anxiety, anger, and depression (all P< or =.02). Patients with a distressed personality (type D; ie, the tendency to suppress negative emotions) were more likely to experience an event over time compared with non-type D patients (P=.00005). Cox proportional hazards analysis yielded LVEF of < or =30% (relative risk, 3.0; 95% confidence interval, 1.2 to 7.7; P=.02) and ty...Continue Reading

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