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Microfluidics in Assessing Platelet Function
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Coronary thrombosis and platelet/fibrin microemboli in death associated with acute myocardial infarction

R J Frink1, P A Rooney, J O Trowbridge

  • 1Department of Cardiovascular Research, Mercy Hospital of Sacramento, California.

British Heart Journal
|February 1, 1988
PubMed

Insights

Platelet/fibrin microemboli are common in acute myocardial infarction deaths, often linked to coronary thrombosis and potentially causing fatal arrhythmias or cardiogenic shock.

Area of Science:

  • Cardiovascular Pathology
  • Microcirculation Research

Background:

  • Acute myocardial infarction (AMI) is a leading cause of death.
  • The role of microvascular events in AMI mortality requires further investigation.

Purpose of the Study:

  • To investigate the frequency and clinical significance of platelet/fibrin microemboli in the microcirculation of patients with AMI.
  • To determine the association between microemboli, coronary thrombosis, and cause of death in AMI.

Main Methods:

  • Autopsy examination of 24 patients deceased from AMI.
  • Histopathological analysis of coronary arteries and cardiac microcirculation for thrombi and microemboli.
  • Correlation of findings with clinical data, including cause of death and cardiac conduction system pathology.

Main Results:

  • Acute coronary thrombi were present in all 24 AMI cases.
  • Platelet/fibrin microemboli were found in 79% of AMI hearts, significantly higher than controls (24%).
  • Microemboli were associated with arrhythmias, heart block, conduction system changes, cardiogenic shock, and arrhythmic deaths.

Conclusions:

  • Platelet/fibrin microemboli are frequent in AMI and may originate from epicardial coronary thrombi.
  • These microemboli likely contribute to the pathophysiology of AMI mortality by affecting the cardiac conduction system and microcirculation.

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