Contribution of Echocardiography to Prognostic Evaluation of Pulmonary Arterial Hypertension

The purpose of this study is to determine the prognostic value of echocardiographic parameters in comparison with clinical and hemodynamic parameters in pulmonary arterial hypertension (PAH). A secondary purpose of this study is to analyze the disease evolution after 3 to 6 months. In pulmonary fibrosis it has been demonstrated that the variation of clinical and paraclinical parameters between 2 examinations has a prognostic interest. In this study the prognostic value of variation of some echocardiographic parameters between initial examination and echocardiography after 3 or 6 months will be evaluated. Another secondary purpose is to create a common database for Pneumology, Cardiology and Epidemiology departments with prospective registration of new cases of PAH and follow of patients under treatment.