Correlation of electrocardiographic criteria for left bundle branch block with intraventricular synchrony

CONCLUSIONOf the LBBB electrocardiographic criteria analyzed in this study, QRS duration ≥150 ms and left axis deviation were the best predictors of dyssynchrony individually and in association. Table 1: ResultsQRS120/149QRS ≥150QSV1Notch/SLeftAxisQSV1+≥150Notch/S+≥150LeftAxis+≥150Nº Patients2917272625131110Synchronous5(17%)2(16%)3(11%)5(19%)1 (4%)2(15%)1(9%)0Intermediate6(20 %)1(8%)4(15%)2(7%)2(8%)1(8%)1(9%)0Asynchronous18(63%)14(82%)20(74%)19(74%)22(88%)10(77%)9(82%)10(100%)Abstract Figure. synchronous and asynchronous LBBB
Source: Europace - Category: Cardiology Source Type: research