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Electrocardiographic predictors of validated right ventricular outflow tract septal pacing for correct localization of transthoracic echocardiography.


ABSTRACT: BACKGROUND:Electrocardiographic (ECG) characteristics of true right ventricular outflow tract (RVOT) septal pacing have not been clearly demonstrated. HYPOTHESIS:We hypothesized that ECG parameters would help operators differentiate true RVOT septum from non-septal septum. METHODS:We analyzed 151 patients who underwent pacemaker implantation with a ventricular lead in the RVOT. Transthoracic echocardiographic (TTE) determination of pacing sites was applied in all patients after implantation. A 12-lead ECG was recorded during forced ventricular pacing. RESULTS:According to TTE orientation, pacing at the RVOT septum was achieved in 94 patients (62.3%). Compared with nonseptal pacing, septal pacing had significantly shorter QRS duration (139.2?±?18.5?ms vs 155.5?±?14.7?ms; P?

SUBMITTER: Wei H 

PROVIDER: S-EPMC6489801 | biostudies-literature | 2018 Mar

REPOSITORIES: biostudies-literature

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