Predictive value of abnormal ECG J waves for arrhythmias in patients with acute ST elevation myocar-dial infarction / 心血管康复医学杂志

ABSTRACT

Objective:To explore the predictive value of abnormal ECG J waves for arrhythmias occurred during short term in patients with acute ST elevation myocardial infarction (ASTEMI ) .Methods :ECG and echocardio‐graphic monitoring recordings of 204 ASTEMI patients who received emergency percutaneous coronary intervention (PCI) in our hospital from Jan 2007 to Dec 2012 were retrospectively analyzed .Univariate and multivariate Logistic regression analyses were performed to analyze the influencing factors of arrhythmias within one week after myocar‐dial infarction .Results:Abnormal J waves detected by ECG were found in 82 cases (40.2% ) among the 204 pa‐tients ,most of which were distributed on inferior leads of ECG .Multivariate Logistic regression analysis indicated that abnormal J waves (OR=14.05 , P=0.01 ,95% CI 1.70~116.40) ,J waves distributed across ≥ two locations (OR=13.38 ,P=0.01 ,95% CI 1.53~38.68) and J wave amplitude≥0.2 mV (OR=4.28 ,P=0.02 ,95% CI 1.82~16.72) were independent predictors for sustained ventricular tachycardia/fibrillation (VT/VF) ,but they cannot be used as predictors for occurrence of all ventricular arrhythmias ,including non‐sustained VT ,sustained VT and VF (P>0.05 all) ,nor the occurrence of atrial arrhythmias , P>0.05 all .Multivariate Logistic regression analysis indicated that diabetes mellitus was an independent predictor for occurrence of ≥30s atrial tachycardia/fibrillation in ASTEMI patients (OR=2.29 ,P=0.047 ,95% CI 1.01~5.18) .Conclusion:Abnormal ECG J wave is an inde‐pendent predictor for occurrence of sustained ventricular tachycardia/fibrillation during short term after ASTEMI .