Assessment of Lung Function (Lufu) at Sea Level LA vs. High Altitude HA in Patients With Pulmonary Arterial Hypertension PAH
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
Aperçu de l'étude
Statut
Statut
Les conditions
Les conditions
Intervention / Traitement
Intervention / Traitement
Description détaillée
Type d'étude
Type d'étude
Inscription (Estimé)
Inscription
Phase
Phase
- N'est pas applicable
Contacts et emplacements
Coordonnées de l'étude
Coordonnées de l'étude
- Nom: Silvia Ulrich, Prof. Dr. med.
- Numéro de téléphone: +41442552220
- E-mail: silvia.ulrich@usz.ch
Sauvegarde des contacts de l'étude
- Nom: Michael Furian, Prof. Dr. sc. ETH
- Numéro de téléphone: +41442552220
Lieux d'étude
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Zurich, Suisse, 8091
- University Hospital of Zurich
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-
Critères de participation
Critère d'éligibilité
Critère d'éligibilité
Âges éligibles pour étudier
- Adulte
- Adulte plus âgé
Accepte les volontaires sains
La description
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 d'étude
Comment l'étude est-elle conçue ?
Détails de conception
- Objectif principal: Soins de soutien
- Répartition: N / A
- Modèle interventionnel: Affectation à un seul groupe
- Masquage: Aucun (étiquette ouverte)
Nombre de bras
Armes et Interventions
Groupe de participants / BrasGroupe de participants / Bras |
Intervention / TraitementIntervention / Traitement |
|---|---|
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Expérimental: 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)
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Descent from 2850m to sea level with a stay for 7 days and re-ascent/return back to their usual living altitude at 2850m
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Que mesure l'étude ?
Principaux critères de jugement
Principaux critères de jugement
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
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FEV1 after re-ascent to 2850m
Délai: From Day 4 at sea level to the day after re-ascent (Day 9: approximately 6 days)
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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
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From Day 4 at sea level to the day after re-ascent (Day 9: approximately 6 days)
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Mesures de résultats secondaires
Mesures de résultats secondaires
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
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Forced Vital Capacity FVC after re-ascent to 2850m
Délai: From Day 4 at sea level to the day after re-ascent (Day 9: approximately 6 days)
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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
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From Day 4 at sea level to the day after re-ascent (Day 9: approximately 6 days)
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FEV1/FVC after re-ascent to 2850m
Délai: From Day 4 at sea level to the day after re-ascent (Day 9: approximately 6 days)
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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
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From Day 4 at sea level to the day after re-ascent (Day 9: approximately 6 days)
|
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Respiratory Impedance (forced oscillation technique) after re-ascent to 2850m
Délai: From Day 4 at sea level to the day after re-ascent (Day 9: approximately 6 days)
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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
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From Day 4 at sea level to the day after re-ascent (Day 9: approximately 6 days)
|
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Respiratory resistance (forced oscillation technique) after re-ascent to 2850m
Délai: 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
Délai: 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
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From Day 4 at sea level to the day after re-ascent (Day 9: approximately 6 days)
|
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FEV1 after 4 days at sea level
Délai: From high altitude (Day 0, 2850m) to day 4 at sea level (approximately 5 days)
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Difference/change in FEV1 between 2850m (prior to descent) and day 4 at sea level in patients with pulmonary arterial disease
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From high altitude (Day 0, 2850m) to day 4 at sea level (approximately 5 days)
|
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Forced Vital Capacity FVC after 4 days at sea level
Délai: From high altitude (Day 0, 2850m) to day 4 at sea level (approximately 5 days)
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Difference/change in forced vital capacity FVC between 2850m (prior to descent) and day 4 at sea level in patients with pulmonary arterial disease
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From high altitude (Day 0, 2850m) to day 4 at sea level (approximately 5 days)
|
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FEV1/FVC after 4 days at sea level
Délai: From high altitude (Day 0, 2850m) to day 4 at sea level (approximately 5 days)
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Difference/change in FEV1/FVC between 2850m (prior to descent) and day 4 at sea level in patients with pulmonary arterial disease
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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
Délai: 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
Délai: 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
Délai: 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
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From high altitude (Day 0, 2850m) to day 4 at sea level (approximately 5 days)
|
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FEV1 pre-descent and after re-ascent (2850m)
Délai: 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)
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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
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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)
|
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Forced Vital Capacity FVC pre-descent and after re-ascent (2850m)
Délai: 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)
Délai: 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)
Délai: 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)
Délai: 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)
Délai: 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)
|
Collaborateurs et enquêteurs
Parrainer
Parrainer
Les enquêteurs
Les enquêteurs
- Chercheur principal: Silvia Ulrich, University Hospital Zurich, Departement of Pulmonology
- Chercheur principal: Rodrigo Hoyos, Hospital Carlos Andrade Marin of Quito, Ecuador
Dates d'enregistrement des études
Dates principales de l'étude
Début de l'étude (Estimé)
Début de l'étude
Achèvement primaire (Estimé)
Achèvement primaire
Achèvement de l'étude (Estimé)
Achèvement de l'étude
Dates d'inscription aux études
Première soumission
Première soumission
Première soumission répondant aux critères de contrôle qualité
Première soumission répondant aux critères de contrôle qualité
Première publication (Réel)
Première publication
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Réel)
Dernière mise à jour publiée
Dernière mise à jour soumise répondant aux critères de contrôle qualité
Dernière mise à jour soumise répondant aux critères de contrôle qualité
Dernière vérification
Dernière vérification
Plus d'information
Termes liés à cette étude
Mots clés
Termes MeSH pertinents supplémentaires
Autres numéros d'identification d'étude
Autres numéros d'identification d'étude
- Ec_LAvsHA_Lufu_PAH
Plan pour les données individuelles des participants (IPD)
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Description du régime IPD
Informations sur les médicaments et les dispositifs, documents d'étude
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