Why the study?
Does a prolonged HV interval predict increased mortality and progression to trifascicular block in patients with chronic bifascicular block?
Population
517 patients with chronic bifascicular block (BFB)
Comparison
Prolonged HV interval (PHV, >55 msec) vs Normal HV interval (NHV)
Design
Cohort
Follow-up
mean 3.4 +/- 0.2 years (range 21 days to 9.8 years)
Authors
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Prolonged HV may aid risk stratification in bifascicular block; hypothesis-generating for interventions, with prospective trials needed.
Does a prolonged HV interval predict increased mortality and progression to trifascicular block in patients with chronic bifascicular block?
In patients with chronic bifascicular block, a prolonged HV interval is associated with a higher incidence of organic heart disease, progression to trifascicular block, and cardiovascular mortality.
Dhingra et al. (1981) studied this question.
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