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To the Editor Right ventricular (RV) enlargement due to increased pulmonary regurgitation has been identified as a significant issue in patients after repair of tetralogy of Fallot. In a recent study, O'Meagher et al 1 reported an interesting observation; exercise capacity and stroke volume are maintained with RV end-diastolic volume index (RVEDVi) above, as opposed to below, a commonly used cut-off (150 mL/m …
Contributors All authors included in the paper fulfil the criteria of authorship. There is no one else who fulfils the criteria but has not been included as an author.
Competing interests None.
Provenance and peer review Not commissioned; internally peer reviewed.
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