Temporal evolution of body surface map patterns following acute inferior myocardial infarction

摘要: Summary We studied the evolution of body-surface potential map (BSPM) patterns in 32 patients following first acute inferior myocardial infarction. Initial BSPMs were obtained at a mean 79 hours post-infarction; follow-up BSPMs, eight months post-infarction. Temporal area-of-difference maps, constructed by subtracting initial from group-mean revealed reciprocal changes over superior and torso for both Q-zone ST-segment time-integral distributions. The temporal small but definite: there was relative gain values and, torso, decrease. In contrast, marked spatial quantitative distributions during period. Over particularly anteriorly, values; With distributions, individual maps continued to reflect pattern infarction follow-up. resulted followup that nearly indistinguishable normal maps. relatively depolarization early post-infarction period suggest phase near-irreversible or completed damage. normalization repolarization recovery suggests, however, are also considerable areas myocardium-at-risk process which stabilize with time.