Pulmonary Vascular Dysfunction as a Cause of Persistent Exertional Dyspnea After Coronavirus Disease (COVID-19)

Right ventricular function determined by echocardiography at rest and during exercise (non-invasive estimation of ventilation-perfusion mismatch), systemic endothelial function, left heart function, and plasma levels of vasoactive biomarkers compared with clinical parameters of dyspnea and exercise capacity. Further examinations will be performed in patients with still unclear cause of persistent shortness of breath after 3 months of follow-up (subgroup RHC)

Right ventricular function determined by echocardiography at rest and during exercise (non-invasive estimation of ventilation-perfusion mismatch), systemic endothelial function, and plasma levels of vasoactive biomarkers compared with clinical parameters of dyspnea and exercise capacity.