The predictive power in QRS-T angle changes before and after PCI for major adverse cardiovascular events in elderly patients with acute coronary syndrome
Objective To explore the predictive power in QRS-T angle changes before and after percutaneous coronary intervention(PCI)for major adverse cardiovascular events(MACE)in elderly patients with acute coronary syndrome(ACS).Methods A total of 208 ACS patients who underwent PCI from Mar 2021 to Mar 2022 in Lishui People's Hospital were selected.According to the occurrence of MACE within follow-up,the patients were divided into an observation group(52 cases)and a control group(156 cases).QRS-T angle and the change values in QRS-T angle before and after PCI,and the preoperative Gensini score were measured and compared between the two groups.Multivariate logistic regression was used to analyze the risk factors for postoperative MACE.ROC curve was used to evaluate the predictive power of the change values in QRS-T angle and Gensini score for MACE in elderly patients with ACS.The correlation between the change value in QRS-T angle and Gensini score was analyzed.Results The change value in QRS-T angle was significantly lower,while Gensini score was significantly higher in the observation group than in the control group(both P＜0.05).Multivariate logistic regression analysis showed that the change value of QRS-T angle and Gensini score were independent factors for MACE(all P＜0.05).In predicting MACE,the AUC of QRS-T angle change value was significantly lower than Gensini score,while the specificity was significantly higher than Gensini score.The change value in QRS-T angle was negatively related to Gensini score(r=-0.367,P＜0.001).Conclusion The change in QRS-T angle before and after PCI in elderly patients with ACS has a better predictive power for MACE.
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