Personality and mortality after myocardial infarction

Area of Science:

• Cardiology
• Psychology
• Health Psychology

Background:

• Emotional distress is a known risk factor for mortality following myocardial infarction (MI).
• Emotional distress is associated with stable personality traits.
• The specific role of personality traits in post-MI mortality requires further investigation.

Purpose of the Study:

• To examine the role of personality traits in predicting mortality among myocardial infarction (MI) survivors.
• To assess whether personality type modifies the impact of emotional distress on post-MI outcomes.

Main Methods:

• A cohort of 105 male MI survivors (ages 45-60) were assessed for biomedical and psychosocial risk factors, including personality type.
• Patients were followed for 2 to 5 years to determine mortality.
• Logistic regression models were used to analyze the association between personality type, psychosocial factors, biomedical factors, and mortality.

Main Results:

• Mortality rate was significantly higher in patients with a distressed personality type (39%) compared to others (5%).
• Distressed personality type, characterized by simultaneous distress and emotional inhibition, independently predicted mortality.
• The distressed personality type amplified mortality risk five-fold in patients with poor physical health.
• While depression, life stress, and somatization were related to mortality, they did not add predictive value beyond the distressed personality type.

Conclusions:

• Personality traits, particularly a distressed type, play a significant role in post-myocardial infarction mortality.
• The distressed personality type appears to mediate the detrimental effects of emotional distress in MI patients.
• Incorporating personality assessment may improve risk stratification for MI survivors.