Key result
Strauss criteria reclassifies LBBB, identifying true block in only 37% of CRT candidates.
Why the study?
There is no agreement on the definition of left bundle branch block (LBBB) for selecting patients undergoing cardiac resynchronization therapy (CRT).
What is the prevalence of true-LBBB according to Strauss criteria compared to traditional criteria in patients undergoing CRT?
Observational (n=414)
What is the prevalence of true-LBBB according to Strauss criteria compared to traditional criteria in patients undergoing CRT?
Absolute Event Rate: 37% vs 55%
Applying the stricter Strauss criteria for LBBB significantly reduces the proportion of CRT patients meeting Class I guideline recommendations compared to traditional criteria.
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May narrow Class I CRT eligibility; leaves open whether Strauss criteria better select responders.
Migliore et al. (2015) conducted an observational in Cardiac resynchronization therapy (n=414). Strauss criteria for true-LBBB vs. Traditional LBBB criteria was evaluated on Prevalence of true-LBBB. Applying stricter Strauss criteria, only 37% of patients undergoing cardiac resynchronization therapy had true left bundle branch block, compared to 55% using traditional criteria.
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