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To the Editor, We read with great interest the article by Di Maria et al,1 describing the importance of RV performance, especially RV stroke work (RVSW), in children with pulmonary arterial hypertension (PAH). The authors investigated the relation between echocardiographic measurements of RV function and the ‘gold standard’ of right heart catheterisation in children and …
Contributors JP wrote the letter to the editor. MK supervised and revised it. Both authors read and approved the final version.
Competing interests None.
Provenance and peer review Not commissioned; internally peer reviewed.