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- W1978008220 abstract "We previously reported that postextrasystolic potentiation (PESP) is a useful predictor of changes in systolic wall function (SWF) following coronary revascularization. In the current study we analyzed ECG changes related to corresponding myocardial segments to determine their correlation with PESP and SWF. We found: (1) The PESP response in a jeopardized segment was a valid predictor of improved SWF even when Q waves, ST-segment changes, or T-wave changes were present. (2) However, when Q waves were present in two or more of the corresponding leads, positive PESP was less likely to be observed. (3) Thus Q waves in two leads predicted the least postrevascularization improvement. (4) Segments with no corresponding Q-wave postrevascularization usually improved SWF. (5) Furthermore, a continuum of responsiveness to PESP was found, ranging from T-wave changes, ST-segment changes to Q-wave changes, indicating dissociation between electrical and mechanical events. In conclusion, the ECG together with PESP provide good predictive information relative to the efficacy of revascularization. PESP is a more valuable predictive indicator. ECG alone may be of value in that the occurrence of Q waves in two or more corresponding leads predicts a low probability of improved SWF. Further studies are indicated to investigate the dissociation between electrical and mechanical events." @default.
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- W1978008220 date "1991-03-01" @default.
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- W1978008220 title "Electrocardiography and postextrasystolic potentiation: Utilization of the two methods to predict postrevascularization segmental myocardial function" @default.
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- W1978008220 doi "https://doi.org/10.1002/clc.4960140313" @default.
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