acute myocardial infarction' target="_blank" rel="external"> TEXT-ALIGN: left" align="left">acute myocardial infarction
; percutaneous coronary intervention; T-wave peak to end intervalObjective : To observe the effects of primary percutaneous coronary intervention (pPCI) in patients with acute ST-elevation myocardial infarction on transmural dispersion of repolarization (TDR). Methods: A retrospective analysis on 245 cases with acute STEMI. All of the patients were divided into two groups: 188 cases undergoing pPCI treatment as the intervention [1]group, and 57 cases without pPCI treatment as the control group. Corrected QT interval (QTc) and T-wave peak to end interval before and after correcting heart rate (Tp-Te , Tp-Tec) were measured on admission and on the third day after admission. Results: (1)Intervention group: QTc interval on the third day had no statistical significance compared with that on admission (P=0.277), while the Tp-Te, Tp-Tec intervals were both significantly decreased (P<0.05). Control group: QTc interval was longer on the third day and Tp-Te, Tp-Tec intervals were both significantly decreased (P<0.05), as compared to the intervention group;(2)Comparing with the control group, the intervention group had a lower incidence of malignant arrhythmia (P<0.05). Conclusion: Primary PCI could make Tp-Te, Tp-Tec intervals decrease significantly, thus improving TDR and reducing the incidence of malignant arrhythmia as compared to absolute medicine therapy.
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