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Standard vs målrettet iltterapi Præhospital for kronisk obstruktiv lungesygdom (STOP-COPD)

30. september 2026 opdateret af: Central Denmark Region

The STOP-COPD trial is a randomized, patient-blinded, prehospital clinical trial designed to evaluate the effect of titrated oxygen therapy compared to standard oxygen treatment in patients with suspected acute exacerbation of chronic obstructive pulmonary disease (AECOPD) treated with inhaled bronchodilators. The primary objective is to determine whether a titrated oxygen strategy targeting SpO₂ 88-92% can reduce 30-day mortality compared to the current standard practice using 100% compressed oxygen as a nebulizer driver.

Studieoversigt

Status

Rekruttering

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

Chronic obstructive pulmonary disease (COPD) is a leading cause of morbidity and mortality globally. In the prehospital setting, patients with suspected acute exacerbation of COPD (AECOPD) are frequently treated with inhaled bronchodilators driven by 100% oxygen, despite concerns that high-concentration oxygen therapy may worsen hypercapnia and acidosis, leading to increased mortality.

The STOP-COPD trial is a prospective, randomized, parallel-group, superiority trial conducted in the Prehospital Emergency Medical Services, Central Denmark Region. Patients aged 40 years or older with suspected AECOPD requiring inhaled bronchodilators are randomized 1:1 to receive either:

Titrated oxygen therapy: Inhaled bronchodilators driven by compressed air with supplemental oxygen titrated to maintain SpO₂ 88-92%.

Standard treatment: Inhaled bronchodilators driven by 100% compressed oxygen according to standard protocols.

The primary outcome is 30-day all-cause mortality. Secondary outcomes include 24-hour and 7-day mortality, need for invasive or non-invasive ventilation, development of respiratory acidosis upon hospital arrival, ICU admission rate, length of hospital and ICU stay, patient-experienced dyspnoea, and readmission rates. A total of 1,888 patients will be enrolled.

The study is conducted under emergency research regulations allowing enrolment before informed consent, with consent obtained as soon as feasible after hospital admission. This trial seeks to evaluate whether titrating oxygen delivery in the prehospital phase can improve survival and clinical outcomes for patients with AECOPD.

Undersøgelsestype

Interventionel

Tilmelding (Anslået)

1888

Fase

  • Fase 4

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiekontakt

  • Navn: Martin F Gude, PhD
  • Telefonnummer: 0045 25343621
  • E-mail: martgude@rm.dk

Undersøgelse Kontakt Backup

  • Navn: Arne Sylvester R Jensen
  • Telefonnummer: 22396968
  • E-mail: arjens@rm.dk

Studiesteder

      • Aarhus N, Danmark, 8200
        • Rekruttering
        • Prehospital Emergency Medical Servises, Central Denmark Region

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

40 år og ældre (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Beskrivelse

Inclusion Criteria:

  • Patients over the age of 40
  • EMT or Paramedic suspected AECOPD
  • Confirmed suspicion of COPD

Exclusion Criteria:

  • Bronchospasm due to asthma, allergic reaction or non-COPD conditions
  • Known or suspected pregnancy
  • Prehospital Non-invasive, invasive or assisted bag mask ventilation
  • Allergy to inhaled bronchodilators (Salbutamol)
  • Inter-hospital transfer
  • More than 2 doses (5 mg salbutamol) inhalation drug, acute treatment by EMS (emergency medical service) personnel, before allocated treatment is initiated
  • Suspicion of acute coronary syndrome

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Behandling
  • Tildeling: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Enkelt

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Titrated Oxygen

If the treating EMT or paramedic finds indications for inhaled bronchodilators, this will be done with compressed air 6-8 l/min. as the driver for the nebulizer. The patient will have a Bi-nasal EtCO2 (end-tidal carbon dioxide) meter placed under the nebulizer. This will measure the EtCO2 during the treatment and at the same time oxygen can be titrated through this to a target SpO2 of 88-92%. Repeated treatment will be at the discretion of the treating EMT or paramedic according to SOP (standard operating procedures).

Following scenarios regarding SpO2 can occur during treatment:

SpO2 <88%: Supplemental oxygen via the EtCO2-meter up to 10 l/min, if higher oxygen levels are needed oxygen will be used as driver for the nebulizer. If the SpO2 remains under 88% additional oxygen can be added via the EtCO2-meter.

SpO2 88-92%: No intervention.

SpO2 >92%: No intervention.

If repeated treatment is not indicated the patient receives oxygen to SpO2 88-92% according SOP.

Titrated oxygen strategy - a mix of supplemental oxygen and compressed atmospheric air as driver for inhaled bronchodilators to target SpO2 88-92%

Andre navne:
  • Oxygen-titrering til spo₂ 88-92% og komprimeret atmosfærisk luft som forstøver driver
Aktiv komparator: Standard Oxygen

If the treating EMT or paramedic finds indication for inhaled bronchodilators, this will be done with oxygen 6-8 l/min. as the driver for the nebulizer. The patient will have a Bi-nasal EtCO2 meter placed under the nebulizer. This will measure the EtCO2 during the treatment and at the same time mask the patient for group allocation. Repeated treatment will be at the discretion of the treating EMT or paramedic according to SOP.

Following scenarios regarding SpO2 can occur during treatment:

SpO2 <88%: Supplemental oxygen via the EtCO2 -meter up to 10 l/min.

SpO2 88-92%: No intervention.

SpO2 >92%: No intervention.

If repeated treatment is not indicated the patient receives oxygen to SpO2 88-92% according SOP.

Standard care using compressed oxygen (100%) as driver for inhaled bronchodilators

Andre navne:
  • Ingen spo₂ -målrestriktion og 100% komprimeret ilt som forstøvet driver

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Mortality, 30-day
Tidsramme: Day 30 from randomization

Vital status assessed 30 days after randomization using hospital electronic medical records

Day 30 from randomization

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Mortality, 24-hour
Tidsramme: 24 hours from randomization

Vital status assessed 24 hours after randomization using hospital electronic medical records

24 hours from randomization
Mortality, 7-day
Tidsramme: Day 7 from randomization

Vital status assessed 7 days after randomization using hospital electronic medical records

Day 7 from randomization
Length of hospital stay
Tidsramme: Day 30 from randomization

Number of days from hospital admission to hospital discharge, collected from hospital electronic medical records

Day 30 from randomization
ICU admission rate
Tidsramme: Day 30 from randomization

Proportion of patients admitted to an intensive care unit during the index hospitalization, collected from the electronic hospital medical record

Day 30 from randomization
Length of ICU stay
Tidsramme: Day 30 from randomization

Number of days spent in the intensive care unit during the index hospitalization, collected from the patient's electronic hospital medical record

Day 30 from randomization
In-hospital need for NIV (non-invasive ventilation) within 24 hours
Tidsramme: Day 30 from randomization

Use of non-invasive ventilation recorded within 24 hours of hospital admission, collected from the patient's electronic hospital medical record

Day 30 from randomization
In-hospital need for NIV within 7 days
Tidsramme: Day 30 from randomization

Use of non-invasive ventilation recorded within 7 days of hospital admission, collected from the patient's electronic hospital medical record

Day 30 from randomization
In-hospital need for NIV within 30 days
Tidsramme: Day 30 from randomization

Use of non-invasive ventilation recorded within 30 days of randomization, collected from the patient's electronic hospital medical record

Day 30 from randomization
Time to NIV
Tidsramme: Day 30 from randomization

Time from hospital admission to initiation of non-invasive ventilation, collected from the patient's electronic hospital medical record

Day 30 from randomization
In-hospital need for invasive mechanical ventilation within 24 hours
Tidsramme: Day 30 from randomization

Initiation of invasive mechanical ventilation within 24 hours of hospital admission, collected from the patient's electronic hospital medical record

Day 30 from randomization
In-hospital need for invasive mechanical ventilation within 7 days
Tidsramme: Day 30 from randomization

Initiation of invasive mechanical ventilation within 7 days of hospital admission, collected from the patient's electronic hospital medical record

Day 30 from randomization
In-hospital need for invasive mechanical ventilation within 30 days
Tidsramme: Day 30 from randomization

Initiation of invasive mechanical ventilation within 30 days of randomization, collected from the patient's electronic hospital medical record

Day 30 from randomization
Time to invasive ventilation
Tidsramme: Day 30 from randomization

Time from hospital admission to initiation of invasive mechanical ventilation, collected from the patient's electronic hospital medical record

Day 30 from randomization
Proportion of patients with respiratory acidosis on arrival to hospital
Tidsramme: Day 30 from randomization

Presence of respiratory acidosis (PaCO₂ >6.3 kPa and pH <7.35) assessed via arterial blood gas analysis within 30 minutes after arrival, collected from the patient's electronic hospital medical record

Day 30 from randomization
The degree of acidosis based on the pH (potential of hydrogen) value
Tidsramme: Day 30 from randomization

Lowest pH value measured from arterial blood gas within 30 minutes of hospital arrival, collected from the patient's electronic hospital medical record

Day 30 from randomization
Patient experienced dyspnoea on a verbal rating scale 0-10
Tidsramme: Day 30 from randomization

Patient-reported dyspnoea score at hospital arrival on a scale from 0 (no dyspnoea) to 10 (worst imaginable dyspnoea), collected from the prehospital patient record and hospital medical record

Day 30 from randomization
Readmission rate
Tidsramme: Day 30 after discharge

Proportion of patients readmitted to hospital within 30 days after discharge from index hospitalization, collected from the patient's electronic hospital medical record

Day 30 after discharge
Time to readmission
Tidsramme: Day 30 after discharge

Number of days from hospital discharge to first hospital readmission within 30 days, collected from the patient's electronic hospital medical record

Day 30 after discharge

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Efterforskere

  • Ledende efterforsker: Martin F Gude, PhD, Central Denmark Region

Publikationer og nyttige links

Den person, der er ansvarlig for at indtaste oplysninger om undersøgelsen, leverer frivilligt disse publikationer. Disse kan handle om alt relateret til undersøgelsen.

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

2. juni 2025

Primær færdiggørelse (Anslået)

29. februar 2028

Studieafslutning (Anslået)

31. maj 2028

Datoer for studieregistrering

Først indsendt

10. januar 2023

Først indsendt, der opfyldte QC-kriterier

19. januar 2023

Først opslået (Faktiske)

30. januar 2023

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

2. oktober 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

30. september 2026

Sidst verificeret

1. september 2026

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • 5925
  • 2022-502003-30-00 (Anden identifikator: https://euclinicaltrials.eu)

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

JA

IPD-planbeskrivelse

De-identified individual participant data (IPD) will be made available to researchers whose proposed use of the data has been approved by the local administration. Data will be shared starting 9 months after publication of the primary results and will be accessible until data are no longer stored, according to current ICMJE recommendations and EU data protection regulations.

All trial-related documents (e.g., protocol, statistical analysis plan) will be made publicly available on the trial website. Patient-related data will not be accessible on the website.

IPD-delingstidsramme

9 months after primary results publication; data will remain available until de-identified data are no longer stored according to ICMJE recommendations and EU regulations.

IPD-delingsadgangskriterier

Researchers must submit a methodologically sound proposal for use of the data. Access will be granted following review and approval by the local trial administration. A data-sharing agreement will be required.

IPD-deling Understøttende informationstype

  • STUDY_PROTOCOL
  • SAP
  • ICF
  • ANALYTIC_CODE
  • CSR

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

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Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .