Why the study?
Does left ventricular dyssynchrony differ between pacing-induced LBBB and intrinsic LBBB?
Does left ventricular dyssynchrony differ between pacing-induced LBBB and intrinsic LBBB?
Imaging techniques that only visualize the basal- or mid-part of the LV may seriously underestimate dyssynchrony in patients with pacing-induced LBBB.
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May underestimate dyssynchrony with basal/mid LV imaging in RV-paced LBBB; leaves open whether protocols should differ from intrinsic cases.
Right ventricular-pacing results in less early basal activation and more often early mid-septal and late lateral wall activation in comparison with intrinsic LBBB. Imaging techniques that only visualize the basal- or mid-part of the LV may result in a serious underestimation of dyssynchrony in patients with pacing-induced LBBB.
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Ghani et al. (2011) studied this question.
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