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Assessment of Lung Function (Lufu) at Sea Level LA vs. High Altitude HA in Patients With Pulmonary Arterial Hypertension PAH

31 sierpnia 2026 zaktualizowane przez: Silvia Ulrich Somaini

Effect of a One-week Descent From 2850m to Sea Level and Re-ascent in Patients With Pulmonary Arterial Hypertension and Healthy Controls Permanently Living > 2600m on Pulmonary Hemodynamics, Exercise Capacity, Blood Oxygenation, Sleep Disordered Breathing and Further Outcomes

To study the effect of a re-ascent to high altitude (Quito Ecuador: 2850m) after a one-week stay at sea level (after prior descent from 2850m) on lung function and pulmonary resistance/reactance in patients with pulmonary arterial disease PAH, who live permanently > 2600m.

Przegląd badań

Status

Jeszcze nie rekrutacja

Warunki

Interwencja / Leczenie

Szczegółowy opis

The aim of this research is to investigate the lung function and pulmonary resistance/reactance before and after re-ascent (sea level for 7 days after prior descent from 2850m vs. re-ascent to 2850m) in patients with diagnosed pulmonary hypertension according to guidelines, who permanently live at high altitude over 2600m.

Typ studiów

Interwencyjne

Zapisy (Szacowany)

20

Faza

  • Nie dotyczy

Kontakty i lokalizacje

Ta sekcja zawiera dane kontaktowe osób prowadzących badanie oraz informacje o tym, gdzie badanie jest przeprowadzane.

Kontakt w sprawie studiów

Kopia zapasowa kontaktu do badania

  • Nazwa: Michael Furian, Prof. Dr. sc. ETH
  • Numer telefonu: +41442552220

Lokalizacje studiów

      • Zurich, Szwajcaria, 8091
        • University Hospital of Zurich

Kryteria uczestnictwa

Badacze szukają osób, które pasują do określonego opisu, zwanego kryteriami kwalifikacyjnymi. Niektóre przykłady tych kryteriów to ogólny stan zdrowia danej osoby lub wcześniejsze leczenie.

Kryteria kwalifikacji

Wiek uprawniający do nauki

  • Dorosły
  • Starszy dorosły

Akceptuje zdrowych ochotników

Nie

Opis

Inclusion Criteria:

  • Adult patients aged 18-80 years and of all genders
  • Permanent residence > 2600 m
  • Diagnosis of pulmonary arterial hypertension PAH (PAHHA-Group) according to guidelines
  • Patients are stable on therapy
  • NYHA (new york heart association) functional class I-III.
  • written informed consent to participate in the study.

Exclusion Criteria:

  • Age <18 years or >80 years
  • unstable condition
  • Patients who cannot follow the study investigations
  • Patient permanently living < 2600m.
  • Patients who traveled and stayed overnight at altitudes <2000 m in the past 4 weeks.
  • Patients with moderate to severe concomitant lung disease (FEV1<70% or forced vital capacity <70%), severe parenchymal lung disease, severe smokers (>20 cigarettes/day)
  • Severely hypoxemic patients at Quito permanently having persistent SpO2 (oxygen saturation by pulseoximetry) <80% on ambient air.
  • Patient with a non-corrected ventricular septum defect
  • Relevant concomitant other disease of the heart, kidney, liver, blood (anemia hemoglobin<11 g/dl)

Plan studiów

Ta sekcja zawiera szczegółowe informacje na temat planu badania, w tym sposób zaprojektowania badania i jego pomiary.

Jak projektuje się badanie?

Szczegóły projektu

  • Główny cel: Leczenie podtrzymujące
  • Przydział: Nie dotyczy
  • Model interwencyjny: Zadanie dla jednej grupy
  • Maskowanie: Brak (otwarta etykieta)

Broń i interwencje

Grupa uczestników / Arm
Interwencja / Leczenie
Eksperymentalny: Lung function at sea level and at 2850m
Assessment of lung function and pulmonary resistance/reactance on day four at sea level (after prior descent from 2850m) and after re-ascent (after totally one week at sea level) back to 2850m by bus (in one day)
Descent from 2850m to sea level with a stay for 7 days and re-ascent/return back to their usual living altitude at 2850m

Co mierzy badanie?

Podstawowe miary wyniku

Miara wyniku
Opis środka
Ramy czasowe
FEV1 after re-ascent to 2850m
Ramy czasowe: From Day 4 at sea level to the day after re-ascent (Day 9: approximately 6 days)
Difference/change in forced expiratory volume in one second FEV1 between sea level (measurement on the 4th day) and day after re-ascent to 2850m in patients with pulmonary arterial hypertension
From Day 4 at sea level to the day after re-ascent (Day 9: approximately 6 days)

Miary wyników drugorzędnych

Miara wyniku
Opis środka
Ramy czasowe
Forced Vital Capacity FVC after re-ascent to 2850m
Ramy czasowe: From Day 4 at sea level to the day after re-ascent (Day 9: approximately 6 days)
Difference/change in forced vital capacity FVC between sea level (measurement on the 4th day) and day after re-ascent to 2850m in patients with pulmonary arterial hypertension
From Day 4 at sea level to the day after re-ascent (Day 9: approximately 6 days)
FEV1/FVC after re-ascent to 2850m
Ramy czasowe: From Day 4 at sea level to the day after re-ascent (Day 9: approximately 6 days)
Difference/change in FEV1/FVC between sea level (measurement on the 4th day) and day after re-ascent to 2850m in patients with pulmonary arterial hypertension
From Day 4 at sea level to the day after re-ascent (Day 9: approximately 6 days)
Respiratory Impedance (forced oscillation technique) after re-ascent to 2850m
Ramy czasowe: From Day 4 at sea level to the day after re-ascent (Day 9: approximately 6 days)
Difference/change in respiratory impedance (forced oscillation technique) between sea level (measurement on the 4th day) and day after re-ascent to 2850m in patients with pulmonary arterial hypertension
From Day 4 at sea level to the day after re-ascent (Day 9: approximately 6 days)
Respiratory resistance (forced oscillation technique) after re-ascent to 2850m
Ramy czasowe: From Day 4 at sea level to the day after re-ascent (Day 9: approximately 6 days)
Difference/change in respiratory resistance (forced oscillation technique) between sea level (measurement on the 4th day) and day after re-ascent to 2850m in patients with pulmonary arterial hypertension
From Day 4 at sea level to the day after re-ascent (Day 9: approximately 6 days)
Respiratory reactance (forced oscillation technique) after re-ascent to 2850m
Ramy czasowe: From Day 4 at sea level to the day after re-ascent (Day 9: approximately 6 days)
Difference/change in respiratory reactance (forced oscillation technique) between sea level (measurement on the 4th day) and day after re-ascent to 2850m in patients with pulmonary arterial hypertension
From Day 4 at sea level to the day after re-ascent (Day 9: approximately 6 days)
FEV1 after 4 days at sea level
Ramy czasowe: From high altitude (Day 0, 2850m) to day 4 at sea level (approximately 5 days)
Difference/change in FEV1 between 2850m (prior to descent) and day 4 at sea level in patients with pulmonary arterial disease
From high altitude (Day 0, 2850m) to day 4 at sea level (approximately 5 days)
Forced Vital Capacity FVC after 4 days at sea level
Ramy czasowe: From high altitude (Day 0, 2850m) to day 4 at sea level (approximately 5 days)
Difference/change in forced vital capacity FVC between 2850m (prior to descent) and day 4 at sea level in patients with pulmonary arterial disease
From high altitude (Day 0, 2850m) to day 4 at sea level (approximately 5 days)
FEV1/FVC after 4 days at sea level
Ramy czasowe: From high altitude (Day 0, 2850m) to day 4 at sea level (approximately 5 days)
Difference/change in FEV1/FVC between 2850m (prior to descent) and day 4 at sea level in patients with pulmonary arterial disease
From high altitude (Day 0, 2850m) to day 4 at sea level (approximately 5 days)
Respiratory Impedance (forced oscillation technique) after 4 days at sea level
Ramy czasowe: From high altitude (Day 0, 2850m) to day 4 at sea level (approximately 5 days)
Difference/change in respiratory impedance (forced oscillation technique) between 2850m (prior to descent) and day 4 at sea level in patients with pulmonary arterial disease
From high altitude (Day 0, 2850m) to day 4 at sea level (approximately 5 days)
Respiratory resistance (forced oscillation technique) after 4 days at sea level
Ramy czasowe: From high altitude (Day 0, 2850m) to day 4 at sea level (approximately 5 days)
Difference/change in respiratory resistance (forced oscillation technique) between 2850m (prior to descent) and day 4 at sea level in patients with pulmonary arterial disease
From high altitude (Day 0, 2850m) to day 4 at sea level (approximately 5 days)
Respiratory reactance (forced oscillation technique) after 4 days at sea level
Ramy czasowe: From high altitude (Day 0, 2850m) to day 4 at sea level (approximately 5 days)
Difference/change in respiratory reactance (forced oscillation technique) between 2850m (prior to descent) and day 4 at sea level in patients with pulmonary arterial disease
From high altitude (Day 0, 2850m) to day 4 at sea level (approximately 5 days)
FEV1 pre-descent and after re-ascent (2850m)
Ramy czasowe: Baseline at 2850m followed by a one-week stay at sea level to the day after re-ascent back to 2850m (time frame approximately 11 days)
Difference/change in FEV1 at 2850m with a one-week stay at sea level in between (day pre-descent vs. day after re-ascent) in patients with pulmonary arterial disease
Baseline at 2850m followed by a one-week stay at sea level to the day after re-ascent back to 2850m (time frame approximately 11 days)
Forced Vital Capacity FVC pre-descent and after re-ascent (2850m)
Ramy czasowe: Baseline at 2850m followed by a one-week stay at sea level to the day after re-ascent back to 2850m (time frame approximately 11 days)
Difference/change in forced vital capacity FVC at 2850m with a one-week stay at sea level in between (day pre-descent vs. day after re-ascent) in patients with pulmonary arterial hypertension
Baseline at 2850m followed by a one-week stay at sea level to the day after re-ascent back to 2850m (time frame approximately 11 days)
FEV1/FVC pre-descent and after re-ascent (2850m)
Ramy czasowe: Baseline at 2850m followed by a one-week stay at sea level to the day after re-ascent back to 2850m (time frame approximately 11 days)
Difference/change in FEV1/FVC at 2850m with a one-week stay at sea level in between (day pre-descent vs. day after re-ascent) in patients with pulmonary arterial hypertension
Baseline at 2850m followed by a one-week stay at sea level to the day after re-ascent back to 2850m (time frame approximately 11 days)
Respiratory Impedance (forced oscillation technique) pre-descent and after re-ascent (2850m)
Ramy czasowe: Baseline at 2850m followed by a one-week stay at sea level to the day after re-ascent back to 2850m (time frame approximately 11 days)
Difference/change in respiratory impedance (forced oscillation technique) at 2850m with a one-week stay at sea level in between (day pre-descent vs. day after re-ascent) in patients with pulmonary arterial hypertension
Baseline at 2850m followed by a one-week stay at sea level to the day after re-ascent back to 2850m (time frame approximately 11 days)
Respiratory resistance (forced oscillation technique) pre-descent and after re-ascent (2850m)
Ramy czasowe: Baseline at 2850m followed by a one-week stay at sea level to the day after re-ascent back to 2850m (time frame approximately 11 days)
Difference/change in respiratory resistance (forced oscillation technique) at 2850m with a one-week stay at sea level in between (day pre-descent vs. day after re-ascent) in patients with pulmonary arterial hypertension
Baseline at 2850m followed by a one-week stay at sea level to the day after re-ascent back to 2850m (time frame approximately 11 days)
Respiratory reactance (forced oscillation technique) pre-descent and after re-ascent (2850m)
Ramy czasowe: Baseline at 2850m followed by a one-week stay at sea level to the day after re-ascent back to 2850m (time frame approximately 11 days)
Difference/change in respiratory reactance (forced oscillation technique) at 2850m with a one-week stay at sea level in between (day pre-descent vs. day after re-ascent) in patients with pulmonary arterial hypertension
Baseline at 2850m followed by a one-week stay at sea level to the day after re-ascent back to 2850m (time frame approximately 11 days)

Współpracownicy i badacze

Tutaj znajdziesz osoby i organizacje zaangażowane w to badanie.

Sponsor

Śledczy

  • Główny śledczy: Silvia Ulrich, University Hospital Zurich, Departement of Pulmonology
  • Główny śledczy: Rodrigo Hoyos, Hospital Carlos Andrade Marin of Quito, Ecuador

Daty zapisu na studia

Daty te śledzą postęp w przesyłaniu rekordów badań i podsumowań wyników do ClinicalTrials.gov. Zapisy badań i zgłoszone wyniki są przeglądane przez National Library of Medicine (NLM), aby upewnić się, że spełniają określone standardy kontroli jakości, zanim zostaną opublikowane na publicznej stronie internetowej.

Główne daty studiów

Rozpoczęcie studiów (Szacowany)

25 września 2026

Zakończenie podstawowe (Szacowany)

4 października 2026

Ukończenie studiów (Szacowany)

31 grudnia 2026

Daty rejestracji na studia

Pierwszy przesłany

17 sierpnia 2026

Pierwszy przesłany, który spełnia kryteria kontroli jakości

31 sierpnia 2026

Pierwszy wysłany (Rzeczywisty)

4 września 2026

Aktualizacje rekordów badań

Ostatnia wysłana aktualizacja (Rzeczywisty)

4 września 2026

Ostatnia przesłana aktualizacja, która spełniała kryteria kontroli jakości

31 sierpnia 2026

Ostatnia weryfikacja

1 sierpnia 2026

Więcej informacji

Terminy związane z tym badaniem

Inne numery identyfikacyjne badania

  • Ec_LAvsHA_Lufu_PAH

Plan dla danych uczestnika indywidualnego (IPD)

Planujesz udostępniać dane poszczególnych uczestników (IPD)?

TAK

Opis planu IPD

Data will be provided upon request and based on a clear intention reviewed by an ethical review board.

Informacje o lekach i urządzeniach, dokumenty badawcze

Bada produkt leczniczy regulowany przez amerykańską FDA

Nie

Bada produkt urządzenia regulowany przez amerykańską FDA

Nie

Te informacje zostały pobrane bezpośrednio ze strony internetowej clinicaltrials.gov bez żadnych zmian. Jeśli chcesz zmienić, usunąć lub zaktualizować dane swojego badania, skontaktuj się z register@clinicaltrials.gov. Gdy tylko zmiana zostanie wprowadzona na stronie clinicaltrials.gov, zostanie ona automatycznie zaktualizowana również na naszej stronie internetowej .