title: Conjoined Inferior Pulmonary Veins during Pulmonary Vein Isolation: Prevalence and Novel Approach for Pulmonary Vein Isolation with Cryoballoon.
abstract: Cardiac resynchronization therapy is an established treatment modality in heart failure. Though non-response is a serious issue. To address this issue, a good understanding of the electrical activation during left bundle branch block, biventricular, as well as right- and left ventricular pacing is needed. This way by interpreting the 12-lead electrocardiogram, possible reasons for suboptimal treatment can be identified and addressed. This article reviews the literature on QRS morphology in cardiac resynchronization therapy and its meaning in optimization of therapy.
authors.affiliation: Staten Island University Hospital, New York, Division of Electrophysiology.
authors.forename: Jonathan
authors.initials: J
authors.lastname: Spagnola
authors.affiliation: Staten Island University Hospital, New York, Division of Electrophysiology.
authors.forename: Estelle
authors.initials: E
authors.lastname: Torbey
authors.affiliation: Doylestown Hospital, Pennsylvania, Division of Electrophysiology.
authors.forename: Rob
authors.initials: R
authors.lastname: Sangrigoli
authors.affiliation: Doylestown Hospital, Pennsylvania, Division of Electrophysiology.
authors.forename: John
authors.initials: J
authors.lastname: Harding
authors.affiliation: Staten Island University Hospital, New York, Division of Electrophysiology.
authors.forename: Marcin
authors.initials: M
authors.lastname: Kowalski