Changes of Fragmented QRS Wave, Echocardiography and 2D-STI Parameters in Patients with AMI after PCI

doi:10.7517/issn.1674-0475.220809

Abstract

Abstract: This study investigated the relationship between fragmented QRS complex in electrocardiogram, echocardiography, two-dimensional speckle tracking (2D-STI) and left ventricular remodeling in patients with acute myocardial infarction (AMI). A total of 113 patients who were diagnosed with AMI and received percutaneous coronary intervention (PCI) were selected for clinical research. According to whether the patients had left ventricular remodeling within 12 months after PCI, they were divided into a remodeling group of 41 cases and a non-remodeling group of 72 cases. The dynamic electrocardiogram fragmentation QRS complex at admission, echocardiogram and 2D-STI indexes at 6 months after PCI were compared between the two groups, and the relationship between the above indexes and left ventricular remodeling was analyzed by Logistic regression model. The positive rate of fragmented QRS complex in the remodeling group was higher than that in the non-remodeling group (P<0.05). The measured values of left ventricular end-diastolic volume (LVEDV), interventricular septal thickness (IVST) and left ventricular posterior wall thickness (LVPWT) in the remodeling group were significantly higher than those in the non-remodeling group (P<0.05). The measured values of left ventricular ejection fraction (LVEF) and left ventricular end-systolic volume (LVESV) in the remodeling group were lower than those in the non-remodeling group. The measured values of overall circumferential strain (CS), overall radial strain (RS), and longitudinal strain (LS) in the remodeling group were lower than those in the non-remodeling group (P<0.05). Complicated hypertension, coronary artery disease branch number ≥3, increased IVST, increased LVPWT, and positive fragmented QRS complex were positively correlated with left ventricular remodeling in patients with AMI after PCI (P<0.05). The LVEF, CS, RS, LS measured values were negatively correlated with left ventricular remodeling in patients with AMI after PCI (P<0.05). Observation of ECG, echocardiography and 2D-STI after PCI in patients with AMI has certain clinical value in evaluating whether patients have left ventricular remodeling after operation.

Key words: acute myocardial infarction, electrocardiogram, fragmented QRS complex, echocardiogram, two-dimensional speckle tracking, left ventricular remodeling

WEI Wei, LAN Feifei, QIU Yuyu, QIN Honghui. Changes of Fragmented QRS Wave, Echocardiography and 2D-STI Parameters in Patients with AMI after PCI[J]. IMAGING SCIENCE AND PHOTOCHEMISTRY, 2022, 40(6): 1343-1348.

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