RESUMO
The authors evaluated the possible significant role of urinary TXB2 as a new predicting marker of Acute Myocardial Infarction [AMI] in high-risk subjects. Eighty persons were submitted to this study and divided into three groups, the control group [n = 20], the high risk group [n = 30] and the AMI group [n =30]. all persons subjected to clinical and laboratory evaluation: Cardiac enzymes, Myoglobin, Lipid profiles, Pyruvate Kinase and urinary TXB2 level. A high significant elevation of Cardiac enzymes, Myoglobin and Pyruvate Kinase was observed in AMI group only. Urinary TXB2 in risk group was highly significant elevated while in AMI group was non significant increased compared to control group the Urinary TXB2 could be used as a good predicting marker for probability of AMI in patients who had one or more of the AMI risk factors