Why the study?
Does His bundle recording help delineate the site of block in patients with Mobitz type II block and narrow QRS?
Population
5 patients (3 with Mobitz type II block and narrow QRS, 2 with block simulating type II block)
Design
Case_series
Authors
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His bundle recording may identify benign proximal block in narrow-QRS Mobitz II; leaves open whether it alters pacing decisions.
Does His bundle recording help delineate the site of block in patients with Mobitz type II block and narrow QRS?
His bundle recording can identify benign forms of A-V block proximal to the His bundle in patients with narrow QRS, suggesting the site of block is a more important prognostic determinant than the type of block.
Rosen et al. (1971) studied this question.
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