Relationship between Chest Pain Quality and Electrocardiography Changes and Coronary Angiographic Findings in Patients Undergoing Coronary Angiography

Noninvasive، cheaper، and more feasible methods have always been of great interest to all investigators and physicians in the diagnosis of coronary artery disease. We aimed to investigate the relationship between chest pain and electrocardiographic findings and the culprit artery diagnosed by coronary angiography. This study was conducted on 200 patients with a diagnosis of coronary artery disease who underwent coronary angiography. Electrocardiogram interpretation was assessed according to the different types of rhythms، ST-T interval changes، and cardiac axis deviations. According to the coronary angiography findings، the culprit vessel was defined. All the included patients who experienced chest pain and its characteristics (quality، location، and duration) were registered on a self-explanatory basis. The correlation between the obtained clinical characteristics and the culprit vessel was analyzed. Although in all the groups divided according to the involved coronary vessels heavy chest feeling was the most frequent، differences were insignificant. Most of the patients with left circumflex artery involvement (p value = 0. 028) and left anterior descending artery disease (p value = 0. 045) experienced epigastric pain. There were no significant differences between the frequency of patients with sinus and non-sinus rhythm in the groups divided according to the involved coronary vessels. Patients with ST-T interval changes were more likely to experience left circumflex artery involvement (p value < 0. 001). Axis deviations were markedly more frequent in patients with right coronary artery (p value < 0. 001)، left circumflex artery (p value = 0. 014)، and left anterior descending artery disease (p value = 0. 040). Electrocardiogram findings may be helpful but certainly not reliable enough to predict the involved coronary vessel. There was no considerable relationship between chest pain type and culprit artery. Epigastric pain may be considered a strong marker for coronary artery disease