Coronary Artery Bypass Graft Effect on Cardiogoniometry Characteristic in Patients with Coronary Heart Disease

Context: 

Cardiogoniometry (CGM) is a noninvasive technique for quantitative three‑dimensional vectorial analysis of myocardial depolarization and repolarization. We describe a method of surface electrophysiological cardiac assessment using CGM performed at rest to detect variables helpful in identifying coronary artery disease (CAD) and interplaying factors in patients who underwent coronary artery bypass graft (CABG).

In this study, all patients with CAD undergoing CABG were enrolled. Echocardiography, CGM, and electrocardiography (ECG) were obtained before surgery and a month later. The ECG and CGM alterations were compared before and after CABG and the accuracy of those two methods was evaluated.

In this study, 50 patients were enrolled, of which 33 (66%) were male versus 17 (44%) female, with a mean age of 39.12 ± 60 years. The mean ejection fraction before and after surgery was 44.3 ± 7.9% (range: 20–55) and 40.9 ± 12.5% (20–50), respectively. Before surgery, all patients had sinus rhythm, five cases had left bundle‑branch block (LBBB), and one case was with right bundle‑branch block (RBBB). Subsequently, after surgery, five cases had LBBB, and two cases were found to have RBBB. The rate of postoperation bleeding was 20%. There was no significant change in echocardiographic characteristics before and after operation (P = 0.81); likewise, no significant change was seen in ECG criteria before and after operation (P = 0.96). A significant correlation was seen regarding CGM characteristics before and after CABG (P = 0.003).

A significant association was seen regarding CGM characteristics before and after undergoing an operation. In addition, the specificity and sensitivity of the CGM and ECG before and after operation improved well.