Overview
In this study, the investigators aim to describe the hemodynamic consequences of nasal high-flow measured during right heart catheterization and echocardiography. The research hypothesis is that nasal high-flow would increase cardiac output in patients with pulmonary hypertension. The concomitant echocardiography will allow to describe its sensibility to detect cardiovascular consequences of nasal high-flow.
Eligibility
Inclusion Criteria:
- patient addressed for right heart catheterization for pulmonary hypertension suspicion or follow-up.
Exclusion Criteria:
- necessity of FiO2 >21% during right heart catheterization
- intracardiac shunt
- grade 4 tricuspid insufficiency
- complete arrhythmia due to atrial fibrillation
- Pregnant or breastfeeding women or women of childbearing age without an effective method of contraception
- protected adult patient (tutorship or curatorship)
- patient deprived of liberty by court or administrative decision
- refusal of patient participation or consent
- patient for whom the measurement of pulmonary arterial pressures during right heart catheterization is impossible
- patient for whom, during the etiological assessment of pulmonary hypertension, the diagnosis of precapillary pulmonary hypertension cannot be confirmed and classified in groups 1, 3 or 4.