USEFULNESS OF A NOVEL THREE DIMENTIONAL ELECTROCARDIOGRAPHY SYSTERM IN PATIENTS WITH PRIOR MYOCARDIAL INFARCTION

SHUYING FAN¹, SHAOHUA FAN², WENJING WU¹

¹Department of Cardiology, China-Japan Friendship Hospital, Beijing 100029, China - ²Department of Critical Care Medicine, Jinan Central Affiliated Hospital Affiliated to Shandong University, Jinan 250013, Shandong, China

Introduction: This study aims to understand the usefulness of a novel noninvasive 3-dimensional electrocardiography sys- term (3D-ECG)in the diagnosis of prior myocardial infarction.

Material and methods: 212 patients with more than 1 month history of acute myocardial infarction were selected as prior myocardial infarction group(PMI). 88 patients without myocardial infarction were selected as control group(NPMI). Electrocardiograph and 3D-ECG were applied on all patients in order.

Results: Comparison between 3D-ECG and ECG was accomplished in 212 prior myocardial patients and 88 non myocar- dial patients. 3D-ECG correctly diagnosed prior myocardial infarction in 210 of 212 (99%)PMI and non myocardial infarction in 84 of 88 (95%) NPMI, while ECG diagnosed prior myocardial infarction in 132 of 212 (62%)PMI and non myocardial infarction in 84 of 88 (95%)NPMI. 3D-ECG misdiagnosed prior myocardial infarction in 2 of 212 (0.9%)PMI and non myocardial infarction in 4 of 88 (4.5%) NPMI,while ECG misdiagnosed prior myocardial infarction in 80 of 212 (37.7%)PMI and non myocardial infarction in 84 of 88 (4.5%)NPMI.

Discussion: The study shows a high success rate of 3D-ECG in accurately diagnosing the prior myocardial infarction com- paring with ECG and its application to diagnose prior myocardial infarction is under the way.