Door to Balloon Time in St-Segment Elevation Myocardial Infarction (STEMI): A Prospective Study

Background: The most acute manifestation of coronary artery disease is ST-segment elevation myocardial infarction (STEMI) and is associated with mortality and morbidity. In the majority of cases, complete thrombotic occlusion develops from an atherosclerotic plaque in an epicardial coronary vessel is the cause of STEMI. Early diagnosis and immediate reperfusion reduce the risk of post-STEMI complications and heart failure and thereby are the most effective ways to limit myocardial ischemia and infarct size. If primary percutaneous coronary intervention (PCI) cannot be performed within 120 minutes of STEMI diagnosis, fibrinolysis therapy should be administered to dissolve the occluding thrombus and PCI has become the preferred reperfusion strategy in patients with STEMI.

Methods: From the emergency section of the hospital in the month of October 2021, 7 adult patients were identified with ST-segment–elevation myocardial infarction undergoing primary percutaneous coronary. We used the framework of regression discontinuity to test for discontinuity at 90 minutes among the included cases. The Door - Balloon as 90 minutes minus the time between hospital arrival and catheterization laboratory arrival -defined as a novel variable. To assess the relationship between remaining Door - Balloon time and access site we have estimated multivariable logistic regression models.

Results: The results of primary PTCA in the month of October 2021 were performed in less than 90 minutes without any mortality in 7 patients.

Conclusions: Our Data on mortality and morbidity benefits of primary angioplasty shows a 100% decrease in mortality of patients undergoing primary PTCA within 90 minutes as compared to international data which shows a 40% decrease.