Autopsy-Confirmed Acute Myocardial Infarction using immunoreactivity of some cardiac markers: Exploring the Association with Acute Lung Injury as a Contributor to Sudden Death

Background: Sudden and unexplained deaths present challenges for forensic pathologists to determine underlying causes. Many disorders are cardiovascular in nature, although little research has been done on noncardiac involvement, such as lung disease. This study investigates the correlation between acute myocardial infarction (AMI) and acute lunginjury (ALI) in these types of fatalities. Methods: This study examined 80 autopsy cases of unexpected orunexplained deaths that had been in Egypt between 2009 and 2014. Hematoxylin and eosin staining and immunohistochemistry employing cardiac markers such as troponin, myoglobin, and caspase 3 were usedto examine lung and heart tissues. Results: While 65% of individuals had additional lung diseases, about 35% of cases had signs of ALI. About 60% of people had coronary artery disease and 40% had cardiac muscle damage. Cases examinedby HE & E showed no statistically significant relation or association between ALI and AMI cases. Unlike results withconventional staining, immunohistochemistry revealed a substantial correlation between mild indications of AMI and ALI.Conclusion: The findings raise the possibility of myocardial damage associated with ALI which in turn increases the incidence of sudden or unexpected deaths. For ALI patients, routine cardiac enzyme testing is advised to rule out cardiac involvement. Additional investigation into the pathways linking AMI and ALI is necessary.