- ICH GCP
- US Clinical Trials Registry
- Klinisk utprøving NCT03637114
Acute Exposure of Simulated Hypoxia on Blood and Tissue Oxygenation (aBGA, NIRS)
Acute Exposure to Hypoxia in Precapillary Pulmonary Hypertension: Physiological and Clinical Effects at Rest and During Exercise
Studieoversikt
Status
Forhold
Intervensjon / Behandling
Detaljert beskrivelse
Low altitude baseline measurements will be performed in Zurich (460m asl) including Echocardiography, Right heart catheterization, six-minute walk test (6MWT), pulmonary function test, clinical assessment and blood gas analysis.
Randomly assigned to the order of testing, the participants will be tested under simulated altitude (FiO2: 15.1% with the "AMC altitrainer") and shamed altitude with the same device.
At rest and under exercise data from ABGA and near infrared spectroscopy will be compared under simulated altitude and shamed altitude.
Studietype
Registrering (Faktiske)
Fase
- Ikke aktuelt
Kontakter og plasseringer
Studiesteder
-
-
-
Zurich, Sveits, 8091
- Respiratory Clinic, University Hospital of Zurich
-
-
Deltakelseskriterier
Kvalifikasjonskriterier
Alder som er kvalifisert for studier
Tar imot friske frivillige
Kjønn som er kvalifisert for studier
Beskrivelse
Inclusion Criteria:
- Informed consent
- PH diagnosed according to internation Guidelines: mean pulmonary artery pressure (mPAP) ≥ 25 mmHg along with a pulmonary artery wedge pressure (PAWP) ≤15 mmHg during right heart catheterization at the time of initial diagnosis
- PH class 1 (PAH) or 4 (CTEPH)
- Stable condition, on the same medication for > 4 weeks
- Patient live permanently at an altitude < 1000m asl.
Exclusion Criteria:
- Resting partial Oxygen pressure (PaO2) ≤7.3 kilopascal (kPA) corresponding to the requirement of long-term oxygen therapy > 16hour daily (nocturnal oxygen therapy alone is allowed)
- Severe daytime hypercapnia (pCO2 > 6.5 kPa)
- Susceptibility to high altitude related diseases (AMS, high-altitude pulmonary edema (HAPE), etc.) based on previous experienced discomfort at altitudes.
- Exposure to an altitude >1500m for ≥3 nights during the last 4 weeks before the study participation
- Residence > 1000m above sea level
- Inability to follow the procedures of the study, e.g. due to language problems, psychological disorders, neurological or orthopedic problems with walking disability
- Women who are pregnant or breast feeding
Studieplan
Hvordan er studiet utformet?
Designdetaljer
- Primært formål: Forebygging
- Tildeling: Randomisert
- Intervensjonsmodell: Crossover-oppdrag
- Masking: Enkelt
Våpen og intervensjoner
Deltakergruppe / Arm |
Intervensjon / Behandling |
|---|---|
|
Eksperimentell: Order air-hypoxia
The participants will be exposed to shamed hypoxia (FiO2: 20.9% equivalent to sea level and consecutively to simulated altitude (FiO2: 15.1% equivalent to 2500m above sea level) administered by an altitude Simulator ("Altitrainer, SMTEC"), simulated altitude (FiO2: 15.1%), with a facemask.
|
Innånding av oksygenert luft gjennom en høydesimulator ("Altitrainer"), i ca. 1 time.
gitt av en ansiktsmaske.
Inhalation of unmodified air through an altitude Simulator ("Altitrainer") for approximately 1 hour given by a facemask
|
|
Eksperimentell: Order hypoxia-air
The participant will be exposed to hypoxia (FiO2, 15.1% equivalent to 2500m above sea level), simulated altitude (FiO2: 15.1%), and consecutively to shamed hypoxia (FiO2, 20.9%) administered by an altitude simulator ("Altitrainer, SMTEC") with a facemask.
|
Innånding av oksygenert luft gjennom en høydesimulator ("Altitrainer"), i ca. 1 time.
gitt av en ansiktsmaske.
Inhalation of unmodified air through an altitude Simulator ("Altitrainer") for approximately 1 hour given by a facemask
|
Hva måler studien?
Primære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
|---|---|---|
|
arterial blood oxygenation under simulated altitude at rest (FiO2: 15.1)
Tidsramme: 2 hours
|
Difference in arterial blood oxygenation under simulated altitude (FiO2: 15.1%) and shamed hypoxia (FiO2: 20.9%) at rest.
|
2 hours
|
|
arterial blood oxygenation under simulated altitude at the time of exhaustion (FiO2: 15.1)
Tidsramme: 2 hours
|
Difference in arterial blood oxygenation under simulated altitude (FiO2: 15.1%) and shamed hypoxia (FiO2: 20.9%) at the time of exhaustion
|
2 hours
|
Sekundære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
|---|---|---|
|
Near infrared spectroscopy under simulated altitude at rest (FiO2: 15.1)
Tidsramme: 2 hours
|
Difference in cerebral tissue oxygenation and muscle tissue oxygenation under simulated altitude (FiO2: 15.1%) and shamed hypoxia (FiO2: 20.9%) at rest
|
2 hours
|
|
Near infrared spectroscopy under simulated altitude at rest (FiO2: 15.1)
Tidsramme: 2 hours
|
Difference in cerebral tissue oxygenation and muscle tissue oxygenation under simulated altitude (FiO2: 15.1%) and shamed hypoxia (FiO2: 20.9%)
|
2 hours
|
Samarbeidspartnere og etterforskere
Sponsor
Studierekorddatoer
Studer hoveddatoer
Studiestart (Faktiske)
Primær fullføring (Faktiske)
Studiet fullført (Faktiske)
Datoer for studieregistrering
Først innsendt
Først innsendt som oppfylte QC-kriteriene
Først lagt ut (Faktiske)
Oppdateringer av studieposter
Sist oppdatering lagt ut (Faktiske)
Siste oppdatering sendt inn som oppfylte QC-kriteriene
Sist bekreftet
Mer informasjon
Begreper knyttet til denne studien
Ytterligere relevante MeSH-vilkår
Andre studie-ID-numre
- 2018-00455_A3
Legemiddel- og utstyrsinformasjon, studiedokumenter
Studerer et amerikansk FDA-regulert medikamentprodukt
Studerer et amerikansk FDA-regulert enhetsprodukt
Denne informasjonen ble hentet direkte fra nettstedet clinicaltrials.gov uten noen endringer. Hvis du har noen forespørsler om å endre, fjerne eller oppdatere studiedetaljene dine, vennligst kontakt register@clinicaltrials.gov. Så snart en endring er implementert på clinicaltrials.gov, vil denne også bli oppdatert automatisk på nettstedet vårt. .