Jahanzeb Malik1, Adeel Rehman1, Nismat Javed2, Imran Iftikhar1, Hamid Sharif1

1Rawalpindi Institute of Cardoilogy, Rawalpindi, Pakistan, 2Shifa College of Medicine, Islamabad, Pakistan

Background:
Despite restoration of blood flow, subtle microvascular obstruction can occur. This obstruction can be graded using myocardial blush grade. We aimed to investigate the role of myocardial blush grade in ejection

fraction and adverse outcomes, after percutaneous intervention.

Method(s):
A prospective, observational study was conducted at our institute with a calculated sample size. Variables

such as age, gender, and ejection fraction were noted before the intervention. The patients were followed for 3 months to determine the outcomes. The data was analyzed using IBM SPSS software version 26.0. P-value of less than 0.05 was considered significant for the statistical tests.

Result(s):
There were 74 male and 36 female participants in the study. The mean age was 52.20   10.02 years. The most

common adverse outcome was heart failure (18%). There was a significant Pearson’s correlation between myocardial blush grade and improvement in ejection fraction (p < 0.05). Improvement in myocardial blush grade was significantly related to a decrease in adverse outcomes (p < 0.05). Regression analysis proved myocardial blush grade and diabetes status as independent predictors of percentage increase in ejection fraction (p < 0.05).

Conclusion(s):
High myocardial blush grade is one of the independent predictors of better outcomes in ST-elevation myocardial infarction.