Predictive value of abnormal ECG J wave for short-term prognosis in patients with acute ST-segment el- evation myocardial infarction / 心血管康复医学杂志

ABSTRACT

Objective:To explore the relationship between abnormal ECG J wave and in‐hospital prognosis in patients with acute ST -segment elevation myocardial infarction (ASTEMI) .Methods:ECG and related clinical data of 204 ASTEMI patients ,who received emergency percutaneous coronary intervention (PCI) in our hospital from Jan 2007 to Dec 2012 ,were retrospectively analyzed .According to the presence of abnormal J wave or not ,patients were di‐vided into abnormal J wave group (n= 82 ,occupied 40.2% ,82/204) and no abnormal J wave group (n= 122 , 59.8% ,122/204) .Single‐and multiple‐factor Logistic regression analysis were used to analyze risk factors of in -hospital death .Results:During hospitalization ,incidence rate of sustained ventricular tachycardia/fibrillation in pa‐tients with abnormal ECG J waves was significantly higher than those without abnormal J waves (9.8% vs .1.6% , P=0.008) , but among the 12 cases (5.9% ) of cardiac deaths ,only six cases had abnormal J waves .Logistic regres‐sion analysis indicated that abnormal ECG J wave cannot predict in‐hospital death of ASTEMI patients (OR=0.99 , 95% CI0.34~ 2.90 , P= 0.987) ,while age can be regarded as an independent predictor factor for in‐hospital prognosis of these patients (OR = 1.08 ,95% CI1.01 ~ 1.15 , P= 0.02) .Conclusion:For ASTEMI patients , though the incidence rate of sustained ventricular tachycardia/fibrillation in abnormal J wave group is significantly higher than those of without abnormal J waves group during hospitalization ,but abnormal ECG J waves cannot pre‐dict short-term prognosis of these patients .