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Related Experiment Videos

Type A behavior pattern as a risk factor for coronary heart diseases.

S Maeda1, T Ito

  • 1Department of Cardiology, Nagoya Daini Red Cross Hospital, Japan.

Japanese Circulation Journal
|April 1, 1990
PubMed
Summary

Type A behavior pattern, a risk factor for coronary heart disease (CHD), is prevalent in Japanese patients. This pattern is linked to disease severity and stress response, suggesting its role in CHD development.

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Area of Science:

  • Cardiology
  • Behavioral Medicine
  • Psychosomatic Medicine

Background:

  • Type A behavior pattern (coronary-prone behavior pattern) is a recognized risk factor for coronary heart disease (CHD) in Western populations.
  • The prevalence and impact of Type A behavior in Japanese CHD patients remain less understood.

Purpose of the Study:

  • To investigate the presence and significance of Type A behavior pattern in Japanese patients with new-onset CHD.
  • To explore the relationship between Type A behavior and traditional CHD risk factors, disease severity, and physiological stress responses.

Main Methods:

  • Analysis of 300 new-onset CHD patients (243 acute myocardial infarction, 57 unstable angina pectoris) and healthy controls.
  • Assessment of Type A behavior using the Jenkins Activity Survey (JAS).

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  • Evaluation of stress response via the Mirror Drawing Test (MDT), measuring blood pressure and plasma catecholamine levels.

    • Main Results:

    • Type A behavior pattern was significantly more prevalent in CHD patients (64.6%) than in healthy controls (43.0%).
    • Type A behavior was associated with the severity of coronary atherosclerosis and showed a higher stress-induced elevation in blood pressure and catecholamines compared to Type B.
    • Behavior modification was challenging in post-CHD patients with administrative roles or unchanged workloads.

    Conclusions:

    • Type A behavior pattern is present and plays a significant role in the development of CHD among Japanese patients.
    • The findings highlight the importance of considering behavioral patterns in CHD etiology and management, particularly in high-stress occupations.