Arrhythmias & electrophysiology
Electrocardiographic characteristics of right-bundle-branch-block premature ventricular complexes predicting absence of left ventricular scar in athletes with apparently structural normal heart
Authors' conclusion
Among athletes with apparently idiopathic PVCs with a RBBB configuration, the presence of a concealed LGE at CMR was documented in 29% of cases, mostly in those with a SA-IntA. In our experience, the contemporary presence of qR pattern in lead aVR and V1 in PVCs with RBBB/SA-IntA morphology or, on the other hand, a relatively narrow QRS in PVCs with an IA, predicted absence of LGE.
Study context
- Population
- Athletes (36 ± 16 years; 48.8% men) with monomorphic premature ventricular complexes (PVCs) with right-bundle-branch-block (RBBB) configuration and normal standard clinical investigations who underwent cardiac magnetic resonance (CMR)
- Participants
- 121 athletes
- Exposure
- ECG features of RBBB-pattern PVCs in athletes with vs without late gadolinium enhancement (LGE) at CMR
- Outcome
- Absence of LGE at CMR
Main finding
As reported in the abstract
P = 0.002
- LGE identified overall
- 35 patients (29%)
Observational data: associations, not effects.
Further findings
Contemporary qR pattern in aVR and V1, SA-IntA PVCs (subgroup), without vs with LGE
P < 0.0001
Ectopic QRS duration, IA PVCs (subgroup), without vs with LGE
P < 0.001
Original publication
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