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Keep this study
Lead
University of Zurich
This research in patients with PVD diagnosed with precapillary PH with right heart catheterization and classified to groups 1 and 4 (PAH or CTEPH) who permanently live at HA \>2500 (PVDHA) will have 6-minute walk distance near their living altitude in Quito at 2840m and at sea level in Pedernales the day after the first and the second night after relocation.
Age
18–80
Sex
ALL
Healthy volunteers
Not accepted
You may be eligible if
Adult patients 18-80 years old of both genders,
Residence \> 2500m of altitude
diagnosed with precapillary PH (mean pulmonary artery pressure (mPAP) \>20 mmHg, pulmonary artery wedge pressure (PAWP) ≤15 mmHg and pulmonary vascular resistance (PVR) ≥2 WU (wood units) by right heart catheterization) with PH being classified as PAH or CTEPH according to guidelines
Patients stable on therapy
NYHA (new york heart association) functional class I-III
Provided written informed consent to participate in the study.
You may not be if
Age \<18 years or \>80 years
unstable condition
Patients who cannot follow the study investigations, patient permanently living \< 2500m.
Patients with moderate to severe concomitant lung disease (FEV1\<70% or forced vital capacity \<70%), severe parenchymal lung disease, severe smokers (\>20 igarettes/day)
Severely hypoxemic patients at Quito permanently have persistent SpO2 (oxygen saturation by pulseoximetry) \<80% on ambient air.
Patients with chronic mountain sickness (Hemoglobin \> 19 g/dl in women, \>21 g/dl in men)
Patient with a non-corrected ventricular septum defect
Relevant concomitant other disease of the heart, kidney, liver, blood (anemia hemoglobin\<11 g/dl)
