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EJCM. 2021; 9(2): 105-112

Early QTc Interval Prolongation after Primary Percutaneous Coronary Intervention may have a Positive İmpact

Murat Çap, Emrah Erdoğan, Önder Bilge, Ferhat Işık, Ali Karagöz, Tuncay Güzel, Taylan Akgün, Çetin Geçmen, Cihangir Kaymaz, Nihal Özdemir.

Objective: QTc interval is prolonged in acute myocardial infarction and begins to shorten after successful reperfusion. Data on the early change of QTc after reperfusion and the prognostic significance of this change are limited. We aimed to evaluate the change of QTc interval in the first hour following successful primary percutaneous coronary intervention (pPCI) in ST-elevation myocardial infarction (STEMI) patients and its relationship to reperfusion parameters such as myocardial blush grade (MBG) and ST-segment Resolution (STR%).
Methods: Patients who presented with the first STEMI episode and underwent successful pPCI were included in the study. After pPCI, MBG and STR% were calculated. QTc measurements were made from the electrocardiography(ECG) recorded at admission (Pre-pPCI QTc), 1 hour after pPCI (Post-pPCI QTc), and the 24th hour.
Results: 105 patients who had successful pPCI with adequate ECG data were enrolled in the study. The mean Pre-pPCI QTc was 409±34 ms, post-pPCI QTc was 427±32 ms. A statistically significant prolongation was observed in the QTc interval after pPCI (QTc-Change) (21 ms (-3, 37 IQR), p

Key words: ST-segment Elevation Myocardial Infarction, QTc interval, Myocardial Blush Grade, ST-segment Resolution

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The articles in Bibliomed are open access articles licensed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License (https://creativecommons.org/licenses/by-nc-sa/4.0/) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.