Saves the questions and what to expect into your notes, next to the visit they belong to.
Keep this study
Lead
University of Zurich
Patients with pulmonary hypertension will perform a constant work-rate exercise test at low altitude (450m) and at high altitude 2500m in a randomized-cross-over sequence protocol. The constant work-rate exercise test time and other measures will be assessed
Age
18–any
Sex
ALL
Healthy volunteers
Not accepted
You may be eligible if
Informed consent as documented by signature
PH class I (PAH) or IV (CTEPH) diagnosed according to guidelines: mean pulmonary artery pressure \>20 mmHg, pulmonary vascular resistance ≥3 wood units, pulmonary arterial wedge pressure ≤15 mmHg during baseline measures at the diagnostic right-heart catheterization
You may not be if
resting partial pressure of oxygen \<8 kilopascal at Zurich at 490 m low altitude
exposure to an altitude \>1000 m for ≥3 nights during the last 2 weeks before the study
