Association between ECG Changes in Patients with ST-Elevation Myocardial Infarction with and without Collateral Coronary Vessels

Myocardial infarction (MI) is the leading cause of morbidity and cardiovascular mortality. The presence of collateral coronary vessels is believed to be a good prognostic factor. Accordingly, this study was performed to compare electrocardiographic (ECG) changes in MI patients with and without collaterals. This study was performed as a cross-sectional study among 200 patients admitted for MI in a training hospital in 2011 and 2012. The study population was divided into two categories: patients with collateral coronary vessels and those without them. ECG findings were compared between the two groups. Among the ECG findings, only the QRS pattern in V1 was associated with the presence of collateral vessels. Abnormal QRS axis, pathological Q wave, persistent ST increase/decrease, QRS notch, PR interval, and QRS duration were not related to the presence of collateral vessels (p value > 0.05). According to our results, it may be concluded that ECG changes are not related to the presence of collateral coronary vessels in angiographic assessment. It is recommended that further studies be carried out with evaluation of ECG and after one-month catheterization results of patients to obtain more definite results