Ischemic ECG changes are found more often in asymptomatic men with a coronary prone behaviour pattern

Area of Science:

• Cardiology
• Behavioral Medicine
• Psychophysiology

Background:

• Type A behavior is an established independent risk factor for coronary heart disease (CHD).
• Individuals with Type A behavior may exhibit more pronounced ischemic electrocardiographic (ECG) changes compared to Type B individuals.
• Electrocardiographic (ECG) abnormalities, assessed by the Cardiac Infarction Injury Score (CIIS), predict sudden cardiac death.

Purpose of the Study:

• To investigate the relationship between behavior patterns (Type A, X, B) and ischemic changes on electrocardiograms (ECGs).
• To assess if Type A behavior is associated with higher Cardiac Infarction Injury Scores (CIIS) in healthy middle-aged men.

Main Methods:

• 100 healthy men aged 30-45 years were assessed.
• Behavior patterns were classified using the Structured Interview (46 Type A, 20 Type X, 34 Type B).
• Electrocardiographic (ECG) abnormalities were quantified using the Cardiac Infarction Injury Score (CIIS) and related to cardiovascular risk factors.

Main Results:

• The distribution of CIIS differed significantly among behavior pattern groups (p < 0.05).
• Type A subjects exhibited a shift towards higher ischemic scores on their ECGs.
• The CIIS showed a relationship with traditional cardiovascular risk factors.

Conclusions:

• Clinically asymptomatic individuals with Type A behavior demonstrate a higher likelihood of developing ischemic heart disease.
• Type A behavior may be an indicator for increased risk of sudden cardiac death.
• Behavioral patterns are significant factors in the pathophysiology of coronary heart disease.