Comparison of different techniques for the postmortem diagnosis of myocardial infarction

Area of Science:

• Forensic Pathology
• Cardiovascular Pathology
• Biomarker Analysis

Background:

• Accurate postmortem diagnosis of myocardial infarction is crucial in medicolegal investigations.
• Existing diagnostic techniques vary in reliability and specificity.
• Evaluating and comparing these methods is essential for improving forensic casework.

Purpose of the Study:

• To compare the reliability of four distinct techniques for diagnosing postmortem myocardial infarction.
• To identify the most specific method for confirming myocardial infarction in autopsy cases.
• To assess the utility of haematoxylin-eosin stain, acridine orange method, formazan test, and K/Na ratio.

Main Methods:

• Analysis of 74 medicolegal autopsy cases.
• Application and comparison of four diagnostic techniques: haematoxylin-eosin stain, acridine orange method, formazan test, and K/Na ratio.
• Statistical evaluation of the reliability and specificity of each method.

Main Results:

• The formazan test and K/Na ratio demonstrated good reliability in ruling out myocardial infarction.
• The formazan test exhibited the highest specificity among the evaluated techniques for diagnosing myocardial infarction.
• Haematoxylin-eosin stain and acridine orange method showed varying degrees of reliability.

Conclusions:

• The formazan test is the most specific and reliable method for postmortem diagnosis of myocardial infarction.
• K/Na ratio serves as a valuable supporting tool for ruling out myocardial infarction.
• Further validation of these techniques in larger cohorts is recommended.