Key result
TAVR leads to rare alternating LBBB progressing to persistent conduction block post-procedure.
Case Report (n=1)
No
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This is the first reported case of a beat-to-beat alternating left bundle branch block with varying wide QRS morphology occurring as a conduction disturbance following TAVR.
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Abazid et al. (2026) conducted a case report in Severe aortic stenosis and post-TAVR conduction abnormalities (n=1). Transcatheter aortic valve replacement (TAVR) with 26-mm SAPIEN 3 Ultra RESILIA valve was evaluated on Electrocardiographic changes (conduction abnormalities). A 68-year-old man developed a rare beat-to-beat alternating left bundle branch block three months after transcatheter aortic valve replacement, which progressed to persistent LBBB at eight months.
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