Lung Hyperinflation and Response to Pulmonary Vasodilator Therapy

The goal of this retrospective observational study is to evaluate if lung distension disorders can be a predictive factor of bad response to vasodilator therapy in patients with pulmonary hypertension (PH) associated with chronic obstructive pulmonary disease (COPD). The study will include all patients from the hospital, followed for PH associated with COPD under vasodilator therapy between 2015 and 2021. It will evaluate patients' lung hyperinflation according to the RV/TLC ratio and their response to treatment.