Original Article

Submaximal Cardiopulmonary Exercise Testing for the Evaluation of Unexplained Dyspnea

Objectives: Gas exchange measurements obtained during submaximal exercise have been shown to provide prognostic and diagnostic information in patients with heart failure (HF) and to differentiate heart versus lung limitations in patients with unexplained dyspnea. The aim of our study was to assess the clinical utility of submaximal cardiopulmonary exercise…