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This letter to the editor discusses the potential of using the RS interval on the electrocardiogram to assess right heart electrical conduction and monitor severity in patients with pulmonary arterial hypertension.
To editor The identification of an optimal modality to monitor the severity of pulmonary arterial hypertension (PAH) remains imperative. The authors demonstrated that a prolonged RS interval on the electrocardiogram was associated with adverse clinical outcomes in this cohort, under the hypothesis that right heart electrical conduction is compromised in patients with severe PAH. Nonetheless, several concerns merit consideration. […] How to Assess Impaired Right Heart Electrical Conduction in Patients with Pulmonary Arterial Hypertension?
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Kataoka et al. (2025) studied this question.
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