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[Forensic medicine aspects of fatal coronary insufficiency with normal coronary arteries]
Insights
Sudden cardiac death can occur despite normal coronary arteries, potentially due to coronary artery spasms, muscle bridges, or arrhythmias. Morphological methods cannot identify acute coronary insufficiency from rheological or metabolic causes.
Area of Science:
- Cardiology
- Pathology
- Forensic Medicine
Context:
- Clinical observations reveal diverse anginal symptomatology and sudden cardiac death cases with angiographically normal coronary arteries.
- Understanding the pathogenesis of cardiac events in the absence of obstructive coronary artery disease is crucial.
Purpose:
- To explore potential etiological factors for anginal symptoms and sudden death in patients with normal coronary arteries.
- To investigate the role of coronary artery spasms, muscle bridges, arrhythmias, and histological changes in myocardial ischemia.
Summary:
- Anginal symptoms and sudden cardiac death can occur with normal coronary arteries, attributed to spasms, muscle bridges, or arrhythmias.
- Recurrent myocardial ischemia may show interstitial and endocardial fibrosis histologically.
- Acute coronary insufficiency of rheological or metabolic origin is not detectable by morphological examination.
Impact:
- Highlights the limitations of morphological assessment in diagnosing certain causes of acute coronary insufficiency.
- Provides insights for forensic pathology in cases with competing causes of death.
- Emphasizes the need to consider non-obstructive coronary artery disease mechanisms in clinical and forensic evaluations.
Abstract:
Clinical experiences give examples for the existence of various courses of anginal symptomatology even with cases of sudden heart death demonstrating angiographically normal coronary arteries. Pathogenetically may be considered spasms of regular or little changed coronary arteries, coronary muscle bridges and acute arrhythmias. In cases of recurrent myocardial ischemias an interstitial fibrosis and endocardial fibrosis can be proved histologically in the myocardial supply area. However an acute coronary insufficiency based on rheological and metabolic etiology cannot be found with morphological methods. The results are discussed, considering forensic aspects in cases of competitive causes of death.