Analysis of vectorcardiographic dynamic changes in patients with acute myocardial ischemia

19th Argentinean Bioengineering Society Congress

Correa, R.^1 ; Arini, P.^2,3 ; Correa, L.^1 ; Valentinuzzi, M.^3 ; Laciar, E.^1

Gabinete de Tecnología Médica, Facultad de Ingeniería, Universidad Nacional de San Juan, Av. Libertador General San Martín 1109 (O), J5400ARL-San Juan, Argentina^1

Instituto Argentino de Matemática (IAM) Alberto P. Calderón, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina^2

Instituto de Ingeniería Biomédica (IIBM), Facultad de Ingeniería (FI), Universidad de Buenos Aires (UBA), Buenos Aires, Argentina^3

关键词: Dynamic changes;    Healthy population;    Healthy subjects;    Myocardial ischemia;    Percutaneous transluminal coronary angioplasty;    Sensitivity and specificity;    Vector magnitude;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/477/1/012032/pdf
DOI  :  10.1088/1742-6596/477/1/012032

来源: IOP

【 摘 要 】

This work evaluates the vectorcardiographic dynamic changes in ischemic patients before and during Percutaneous Transluminal Coronary Angioplasty (PTCA). Four vectorcardiographic parameters were computed in 51 ischemic and 52 healthy subjects with the objective of assessing the differences between both groups: ST Vector Magnitude Area (STVMa), T Vector Magnitude Area (TVMa), ST Vector Difference (STVD), and T Vector Difference (TVD). The conventional ST-Change Vector Magnitude (STCVM) and Spatial Ventricular Gradient (SVG) were also calculated. Results indicate that the most of them show significant differences between healthy and ischemic subjects. Since, the statistical minute-by-minute PTCA comparison against a healthy population shows that ischemic patients monitoring reached values of Sensitivity 99.5% and Specificity 99.4%, when STVD, TVD and SVG were used in the classification. In conclusion the sensitivity and specificity for acute ischemia monitoring could be increase with the used of only three vectorcardiographic parameters.