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[Autopsy pathological characteristics in coronary artery disease patients with or without sudden cardiac death]

Botao Luo1, Jie Rao1, Lirong Zhao1

  • 1Department of Pathology of Guangdong Medical College, Zhanjiang 524023, China.

Zhonghua Xin Xue Guan Bing Za Zhi
|August 29, 2014
PubMed

Insights

Older patients with coronary artery disease (CAD) who experienced sudden coronary death (SCD) exhibited more severe atherosclerotic lesions. This study highlights age and lesion severity as key factors in SCD within the CAD population.

Area of Science:

  • Cardiovascular Pathology
  • Forensic Medicine
  • Clinical Cardiology

Background:

  • Coronary artery disease (CAD) is a leading cause of mortality worldwide.
  • Sudden coronary death (SCD) represents a significant proportion of CAD-related deaths.
  • Understanding the clinicopathological differences between SCD and non-SCD patients is crucial for risk stratification and prevention.

Purpose of the Study:

  • To compare the clinicopathological characteristics of coronary artery disease (CAD) patients who experienced sudden coronary death (SCD) versus those who did not.
  • To identify specific pathological features associated with SCD in a cohort of autopsy cases with CAD.

Main Methods:

  • Retrospective analysis of 145 autopsy cases diagnosed with CAD.
  • Cases were divided into two groups: SCD (38 cases) and non-SCD (107 cases).
  • Comparison of demographic data, coronary artery disease severity (number of diseased vessels, atherosclerotic stage, stenosis grade), and presence of myocardial infarction, hypertensive cardiomyopathy, and cerebral arteriosclerosis.

Main Results:

  • Patients in the SCD group were significantly older (55.3 ± 14.5 years) than in the non-SCD group (48.5 ± 13.3 years).
  • A significant positive correlation was observed between the stage of coronary atherosclerosis and the grade of stenosis severity (rs = 0.79, P < 0.01).
  • The SCD group showed significantly higher rates of multiple vessel disease (60.5%), advanced atherosclerotic stage (84.2%), composite lesions (63.2%), severe stenosis (Grade III-IV, 86.8%), old myocardial infarction (36.8%), and cerebral arteriosclerosis (34.2%) compared to the non-SCD group.

Conclusions:

  • Coronary artery atherosclerotic lesions are more severe in patients who experience sudden coronary death.
  • Older age is a significant characteristic of patients with sudden coronary death within this coronary artery disease cohort.
  • These findings underscore the importance of advanced atherosclerosis and patient age as critical factors associated with SCD in CAD.
Abstract

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