The Olson method for detection of acute myocardial ischemia in patients with coronary occlusion

Chest‐lead ST‐J amplitudes using arm electrodes as reference instead of the Wilson central terminal in smartphone ECG applications: Influence on ST‐elevation myocardial infarction criteria fulfillment

“…Necessary ethical approvals by the ethical review board were obtained for the studies from which the ECGs were included. Written informed consent was either obtained (Khoshnood et al., ) or waived by the ethical boards (Akil et al., ; Lindow et al., ).…”

“…Confirmation of the clinical diagnosis was performed by reviewing patient records. In addition, 360 patients without ongoing myocardial ischemia (Lindow, Olson, Swenne, Man, & Pahlm, 2017) were included and served as controls. This dataset consisted of 30 ECGs for each gender and each age decade (30-39, 40-49,…, 80-89).…”

Diagnostic Accuracy Of The Electrocardiographic Decision Support – Myocardial Ischaemia (EDS-MI) Algorithm In Detection Of Acute Coronary Occlusion

“…A detailed description of EDS-MI can be found in previous papers. 6,8 EDS-MI is an automatic and graphical electrocardiographic decision support algorithm based on the Selvester model of the left ventricle 17 and the transformation of the ST-J amplitudes into an ST vector in 3D space ( Figure 2). Cardiac electrical forces can be represented, at any time point, by the 12 leads in the ECG, or by a threedimensional vector.…”

“…In EDS-MI, according to the image surface of Frank 18,19 with correction for lead strength, 6 an ST vector is calculated, from which so-called ischaemic wall scores and a suggestion of the location of transmural ischaemia are generated ( Figure 2). 8,20,21 In the previous study of EDS-MI, presence of ischaemia was determined by first identifying the wall with the highest ischaemic wall score (i.e. either the septal, anterior, lateral or inferior wall).…”

“…7 A recent study indicated that EDS-MI has higher sensitivity than STEMI criteria. 8 There are several non-ischaemic conditions that can mimic STEMI, such as acute perimyocarditis, early repolarization syndrome (ERS) and takotsubo cardiomyopathy. [9][10][11] Furthermore, ST deviation can be present in patients with left ventricular hypertrophy (LVH).…”