Continuous ST-segment monitoring using EASI vector-derived ECG in suspected ACS

The standard 12-lead electrocardiograph (ECG) remains the ‘gold standard’ for documenting and comparing electrical evidence of cardiac ischaemia and acute coronary insufficiency, however the use of continuous ST-segment monitoring is essential if ongoing dynamic changes are to be captured. Information derived from continuous ST-segment monitoring provides for better assessment, prognostic indication of outcome and therefore treatment of these patients. These systems of monitoring often use vector-derived ECGs or vector-cardiography. In this article the use of vector-derived ST-monitoring is subsequently explored and any relative limitations identified. Specifically the EASI ECG, a form of vector-cardiography, is described and its uses discussed.