Key result
In athletes with apparently idiopathic ventricular arrhythmias, premature ventricular beats with multiple morphologies or RBBB configuration predicted late gadolinium-enhancement on CMR (89% vs 26%; P<0.001).
Why the study?
In athletes with ventricular arrhythmias and unremarkable clinical findings, CMR can reveal concealed pathological substrates, but which arrhythmia characteristics predict CMR abnormalities was unclear.
Do specific characteristics of ventricular arrhythmias predict the presence of concealed myocardial abnormalities on CMR in athletes with apparently idiopathic VA?
Population
251 consecutive competitive athletes undergoing CMR for ventricular arrhythmia evaluation
Comparison
Athletes with versus without late gadolinium-enhancement on CMR
Design
Multicenter observational study
Authors
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Multiple-morphology or RBBB PVCs were associated with LGE on CMR; supports selective imaging but leaves open outcome impact.
Observational (n=251)
Yes
Do specific characteristics of ventricular arrhythmias predict the presence of concealed myocardial abnormalities on CMR in athletes with apparently idiopathic VA?
p-value: p=<0.001
In athletes with apparently idiopathic ventricular arrhythmias, specific ECG and exercise testing characteristics can predict the presence of concealed myocardial scar on CMR, aiding in cost-effective CMR prescription.
Crescenzi et al. (2020) conducted an observational in Apparently idiopathic ventricular arrhythmias (n=251). Ventricular arrhythmia characteristics (number, morphology, repetitivity, exercise response) vs. Absence of these characteristics was evaluated on Left-ventricular late gadolinium-enhancement on CMR (p=<0.001). In athletes with apparently idiopathic ventricular arrhythmias, premature ventricular beats with multiple morphologies or RBBB configuration predicted late gadolinium-enhancement on CMR (89% vs 26%; P<0.001).
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