Key result
The use of the LBBB Selvester QRS score criteria overestimates scar size in patients with LBBB following transcatheter aortic valve implantation.
Why the study?
Does the Selvester QRS score accurately estimate myocardial scar size in patients with left bundle branch block following TAVI?
Observational (n=72)
Does the Selvester QRS score accurately estimate myocardial scar size in patients with left bundle branch block following TAVI?
p-value: p==0.386
The Selvester QRS score using LBBB criteria overestimates myocardial scar size in patients developing LBBB after TAVI, suggesting caution in its clinical application.
Supports caution in applying LBBB Selvester QRS score post-TAVI; leaves open need for validation or adjusted criteria in prospective studies.
BACKGROUND: The Selvester QRS score (S-score) estimates myocardial scar using electrocardiographic criteria. We evaluated the S-score for left bundle branch block (LBBB). MATERIAL AND METHODS: Studied were 36 patients who developed persistent LBBB upon transcatheter aortic valve implantation (TAVI, TAVI-LBBB group) and 36 matched patients with persistent narrow QRS (TAVI-nQRS group). Electrocardiograms were recorded before and briefly after TAVI and during ~6months follow-up. S-score was calculated using criteria for hypertrophic (in absence of LBBB) or LBBB hearts. RESULTS: =0.386), indicating reproducibility in more stable conditions. CONCLUSION: This study indicates that the use of the LBBB S-score criteria overestimates scar size and that caution is recommended in the use of the score in patients with LBBB.
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Poels et al. (2017) conducted an observational in Left bundle branch block post-TAVI (n=72). Selvester QRS score (S-score) for LBBB vs. S-score for hypertrophic hearts (narrow QRS) was evaluated on Myocardial scar size estimation (p==0.386). The use of the LBBB Selvester QRS score criteria overestimates scar size in patients with LBBB following transcatheter aortic valve implantation.
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