Key result
Low QRS voltages demonstrate diagnostic and prognostic value in cardiomyopathies supported by advanced imaging.
Why the study?
Recent evidence on myocardial scar detected by cardiac magnetic resonance and its link to sudden cardiac death has renewed interest in the utility of low QRS voltages in cardiomyopathies.
Does the presence of low QRS voltages on ECG provide diagnostic and prognostic value in patients with cardiomyopathies?
Does the presence of low QRS voltages on ECG provide diagnostic and prognostic value in patients with cardiomyopathies?
Low QRS voltages on a standard 12-lead ECG remain a valuable, accessible tool for the diagnostic and prognostic assessment of patients with cardiomyopathies.
Answers are grounded in this paper and cite their sources.
Low QRS voltages remain a valuable accessible tool in cardiomyopathies; extends imaging correlations yet leaves prospective validation open.
The interpretation of 12-lead resting electrocardiogram (ECG) in patients with a definitive diagnosis or with the suspicion of a cardiomyopathy represents a cornerstone for the diagnostic work up and management of patients. Although low electrocardiographic QRS voltages (LQRSV) detected by 12-lead resting ECG have historically been acknowledged by physicians, in view of recent evidence on the demonstration of myocardial scar by cardiac magnetic resonance and its relevance as a cause of sudden cardiac death even in young individuals, a new interest has been raised about the utility of LQRSV in the clinical practice. Beyond their diagnostic value, LQRSV have also demonstrated a prognostic role in different cardiomyopathies. The present review summarizes the diagnostic and prognostic value of LQRSV in cardiomyopathies, reporting the new evidence, primarily based on advanced imaging studies, supporting the clinical utility of this parameter.
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Valentini et al. (2020) conducted a review in Cardiomyopathies. Low electrocardiographic QRS voltages (LQRSV) was evaluated. Low electrocardiographic QRS voltages have demonstrated diagnostic and prognostic value in different cardiomyopathies, supported by new evidence from advanced imaging studies.
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