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Sudden coronary death.

C A Warnes1

  • 1Department of Cardiovascular Diseases and Internal Medicine, Mayo Clinic, Rochester, Minnesota 55905.

Clinical Cardiology
|December 1, 1989
PubMed
Summary
This summary is machine-generated.

Sudden coronary death victims had extensive atherosclerotic plaque, with 27% of segments severely narrowed. Symptomatic individuals and those with myocardial infarction showed significantly more severe coronary artery narrowing.

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Area of Science:

  • Cardiovascular Pathology
  • Atherosclerosis Research
  • Sudden Cardiac Death Etiology

Background:

  • Atherosclerotic plaque quantification is crucial for understanding sudden coronary death.
  • Previous studies defined plaque by the number of severely narrowed arteries (>75% cross-sectional area).

Purpose of the Study:

  • To precisely quantify the amount and distribution of atherosclerotic plaque in sudden coronary death victims.
  • To compare plaque burden between symptomatic and asymptomatic individuals, and those with and without myocardial infarction.

Main Methods:

  • Histologic analysis of 5-mm segments from the four major epicardial coronary arteries of 70 sudden coronary death victims.
  • Categorization of luminal narrowing into five groups (0-100%).

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Main Results:

  • 27% of 3,484 analyzed segments showed severe narrowing (76-100% cross-sectional area).
  • Symptomatic victims had a higher mean percentage of severely narrowed segments (30%) compared to asymptomatic victims (25%).
  • Victims with healed myocardial infarction had more severe narrowing (33%) than those without myocardial infarction (24%).

Conclusions:

  • Significant atherosclerotic plaque burden is present in sudden coronary death victims.
  • Symptomatic status and history of myocardial infarction correlate with increased severe coronary artery narrowing.