Key result
Traditional ECG criteria fail to accurately diagnose LVH in older patients with true LBBB.
Why the study?
The usefulness, diagnostic performance, and clinical applicability of ECG-based LVH criteria in patients with advanced age and LBBB defined by stricter ECG criteria were unknown.
Do ECG-based criteria accurately diagnose left ventricular hypertrophy in older patients with true left bundle branch block compared to echocardiogram?
Observational (n=68)
No
Do ECG-based criteria accurately diagnose left ventricular hypertrophy in older patients with true left bundle branch block compared to echocardiogram?
Effect estimate: AUC 0.67 (95% CI 0.53-0.79)
Traditional ECG criteria for left ventricular hypertrophy lack diagnostic accuracy and clinical utility in older patients with true left bundle branch block, suggesting echocardiography should be used instead.
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Traditional ECG criteria should not yet guide LVH diagnosis in older LBBB patients; retrospective data leaves open validation of alternatives.
Tavares et al. (2021) conducted an observational in Left bundle branch block (n=68). ECG-based LVH criteria vs. Echocardiogram was evaluated on Diagnostic discrimination of LVH by Cornell Voltage Duration Product (AUC) (AUC 0.67, 95% CI 0.53-0.79). Traditional ECG criteria failed to accurately diagnose left ventricular hypertrophy in older patients with true left bundle branch block, yielding poor discrimination with AUCs ranging from 0.53 to 0.67.
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