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

被引:283
作者
Denollet, J [1 ]
Brutsaert, DL [1 ]
机构
[1] Univ Antwerp, Dept Med, B-2020 Antwerp, Belgium
关键词
myocardial infarction; mortality; risk factors; prognosis;
D O I
10.1161/01.CIR.97.2.167
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
Background-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. Methods and Results-Eighty-seven patients with MI (age, 41 to 69 years) with an LVEF of less than or equal to 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 less than or equal to 30%, poor exercise tolerance, previous MI, anxiety, anger, and depression (all P less than or equal to .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 less than or equal to 30% (relative risk, 3.0; 95% confidence interval, 1.2 to 7.7; P=.02) and type D (relative risk, 4.7; 95% confidence interval, 1.9 to 11.8; P=.001) as independent predictors. Anxiety, anger, and depression did not add to the predictive power of type D; these negative emotions were hightly correlated and reflected the personality domain of negative affectivity. Conclusions-Personality influences the clinical course of patients with a decreased LVEF. Emotional distress in these patients is unrelated to disease severity but reflects individual differences in personality. Clinical trials should take a broad view of the target of intervention; assessment of LVEF and personality may identify patients at risk.
引用
收藏
页码:167 / 173
页数:7
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