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- W2090948825 abstract "In a pilot study, electrocardiographic (ECG) recordings of patients with left and right coronary stenosis taken before and after angioplasty were analyzed using the continuous wavelet transform. Time-frequency distributions were obtained for different leads in order to examine the dynamics of the QRS-spectrum and establish features specific of ischemia in the time-frequency domain. We found relevant changes in the mid-frequency range, reflecting the ECG's response to percutaneous transluminal coronary angioplasty (PTCA). The changes appeared in ECG leads close to ischemic zones of the myocardium. Time-frequency distributions of the ECG during the QRS may thus become another electrocardiographic indicator of ischemia, alternative to ST-level in standard ECG or body surface mapping. The paper demonstrates the ability of the continuous wavelet transform to detect short lasting events of low amplitude superimposed on large signal deflections." @default.
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- W2090948825 date "2000-04-01" @default.
- W2090948825 modified "2023-10-12" @default.
- W2090948825 title "Wavelet analysis and time-frequency distributions of the body surface ECG before and after angioplasty" @default.
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- W2090948825 doi "https://doi.org/10.1016/s0169-2607(00)00060-2" @default.
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