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Myocardial damage by resuscitation methods

Yasuo Bunai1, Kayoko Akaza, Masatake Tsujinaka

  • 1Department of Legal Medicine, Gifu University School of Medicine, 40 Tsukasamachi, Gifu 500-8705, Japan. bunaiy@cc.gifu-u.ac.jp

Legal Medicine (Tokyo, Japan)
|August 26, 2003
PubMed

Insights

Autopsy reviews reveal distinct myocardial changes from resuscitation. Cardiopulmonary resuscitation causes focal myofibrillar degeneration, while vasopressors and defibrillation show unique patterns in heart muscle.

Area of Science:

  • Forensic Pathology
  • Cardiovascular Pathology
  • Medical Science

Background:

  • Medico-legal autopsies are crucial for determining cause of death.
  • Understanding iatrogenic myocardial changes is important for accurate forensic interpretation.
  • Resuscitation methods can induce specific histological alterations in the myocardium.

Purpose of the Study:

  • To investigate and classify myocardial changes resulting from resuscitation techniques.
  • To differentiate histological patterns of myofibrillar degeneration (MFD) caused by different resuscitation methods.

Main Methods:

  • Review of medico-legal autopsy cases.
  • Histological examination of myocardial tissue using Luxol fast blue staining.
  • Classification of myofibrillar degeneration (MFD) into contraction band (CB) and diffuse staining (DS) types.

Main Results:

  • Cardiopulmonary resuscitation (CPR) led to focal MFD (CB or DS) in specific heart regions.
  • Vasopressor administration resulted in solitary, predominantly DS-type MFD.
  • Direct current countershocks were associated with characteristic focal MFD in the subepicardial zone.

Conclusions:

  • Distinct patterns of MFD are associated with different resuscitation methods.
  • Histological analysis of MFD can aid in identifying the resuscitation techniques used.
  • These findings contribute to the accurate medico-legal assessment of cardiac events.

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