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EINSTÜNDIGE POSITIVDRUCKBEATMUNG NACH EINEM DRUCKUNTERSTÜTZTEN SPONTANATMUNGSVERSUCH: EINE RANDOMISIERTE KLINISCHE STUDIE

18. September 2026 aktualisiert von: Hospital do Coracao

This is a randomized, open, multicenter, pragmatic, adaptive clinical trial with intention-to-treat analysis. The study will compare two weaning strategies from mechanical ventilation in critically ill patients admitted to intensive care units, with more than 72 hours of mechanical ventilation and with a successful spontaneous breathing trial on pressure support. Immediately after a successful spontaneous breathing trial, eligible patients will be randomized into 2 groups that will be treated according to one of the following interventions:1) One-hour positive pressure ventilation: as soon as the success of the spontaneous breathing trial is confirmed, the patient is submitted to mechanical ventilation for 1 hour using the previous ventilatory parameters and, afterwards, extubated.2) Immediate extubation: the patient is extubated immediately after the success of the spontaneous breathing trial.

Studienübersicht

Status

Noch keine Rekrutierung

Bedingungen

Intervention / Behandlung

Detaillierte Beschreibung

Adaptive design for sample size. The study will include up to a maximum of 4.000 patients. First interim analysis will be performed after complete data is available for the first 500 eligible patients. The Bayesian logistic regression model will be adjusted to provide posterior probabilities that will be compared with threshold values to evaluate stopping decisions. Extensive simulations were conducted to develop and understand adaptive design performance, interim analysis timing, and decision criteria. The trial may be stopped early for efficacy or futility. Secondary outcomes will be analyzed with a gatekeeping procedure to preserve overall type I error at 0.05. Thus, the assessment of statistical significance of secondary outcomes will be performed only if the preceding outcome in the hierarchy met the threshold for statistical significance. No adjustment for multiple comparisons will be applied for analyses of tertiary outcomes and subgroups. Thus, these results should be interpreted as exploratory.Secondary outcomes tested in hierarchical order will be: (1) Mechanical ventilation free days within 28 days; (2) Hospital free days within 28 days; (3) Mortality within 28 days.

Studientyp

Interventionell

Einschreibung (Geschätzt)

4000

Phase

  • Unzutreffend

Kontakte und Standorte

Dieser Abschnitt enthält die Kontaktdaten derjenigen, die die Studie durchführen, und Informationen darüber, wo diese Studie durchgeführt wird.

Studienkontakt

Teilnahmekriterien

Forscher suchen nach Personen, die einer bestimmten Beschreibung entsprechen, die als Auswahlkriterien bezeichnet werden. Einige Beispiele für diese Kriterien sind der allgemeine Gesundheitszustand einer Person oder frühere Behandlungen.

Zulassungskriterien

Studienberechtigtes Alter

18 Jahre und älter (Erwachsene, Älterer Erwachsener)

Akzeptiert gesunde Freiwillige

Nein

Studienberechtigte Geschlechter

Alle

Beschreibung

Inclusion Criteria:

  • Patients aged > 18 years.
  • Admitted to the intensive care unit (surgical or medical).
  • With endotracheal intubation.
  • Mechanical ventilation for more than 72 hours.
  • Who underwent successful spontaneous breathing trial (according to the study protocol) and is considered able to be extubated.

Exclusion Criteria:

  • Patients unable to obey commands.
  • With non-planned extubation.
  • Neuromuscular disease and cervical spinal cord injury.
  • Tracheostomy.
  • Contraindication for cardiopulmonary resuscitation or reintubation.
  • Terminal extubation.
  • Lack of informed consent.
  • Previously included in the trial.

Studienplan

Dieser Abschnitt enthält Einzelheiten zum Studienplan, einschließlich des Studiendesigns und der Messung der Studieninhalte.

Wie ist die Studie aufgebaut?

Designdetails

  • Hauptzweck: Verhütung
  • Zuteilung: Zufällig
  • Interventionsmodell: Parallele Zuordnung
  • Maskierung: Keine (Offenes Etikett)

Waffen und Interventionen

Teilnehmergruppe / Arm
Intervention / Behandlung
Experimental: Ein-Stunden-Positive-Druck-Beatmung

As soon as the success of the spontaneous breathing trial is confirmed, the patient will be submitted to one-hour positive pressure ventilation using the previous ventilatory parameters and, afterwards, extubated.

Aktiver Komparator: Unmittelbare Extubation

The patient will be extubated immediately (up to 10 minutes) after the success of the spontaneous breathing trial.

Was misst die Studie?

Primäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Number of Participants With Extubation Failure Within 7 Days
Zeitfenster: 7 days (from randomization through Day 7 after randomization)

Extubation failure is defined as a composite endpoint of reintubation or death within 7 days after randomization

7 days (from randomization through Day 7 after randomization)

Sekundäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Ventilator-Free Days Through Day 28
Zeitfenster: 28 days (from randomization through Day 28 after randomization)

Ventilator-free days are defined as the number of days alive and free from invasive mechanical ventilation from randomization through Day 28 after randomization. If a patient dies before day 28, the ventilator-free days will be counted as zero. If a patient is reintubated and returns to mechanical ventilation and later is extubated again and remains in unassisted breathing until day 28, the ventilator-free days will be counted from the end of the last period of assisted breathing until day 28. An invasive mechanical ventilation period of less than 24 hours for surgical purposes will count as 1 ventilator-free day. Patients discharged from the hospital in unassisted breathing before 28 days will be considered alive and free from mechanical ventilation for the remaining days up to 28 days. Patients transferred to another hospital or healthcare unit will be followed up until day 28 to assess this outcome.

28 days (from randomization through Day 28 after randomization)
Hospital-Free Days Through Day 28
Zeitfenster: 28 days (from randomization through Day 28 after randomization)

Hospital-free days are defined as the number of days alive and out of the hospital from randomization through Day 28 after randomization. If a patient dies before day 28, the hospital-free days will be counted as zero. Patients discharged from the hospital in unassisted breathing before 28 days will be considered alive and free from hospital for the remaining days up to 28 days. Patients transferred to another hospital or healthcare unit will be followed through day 28 to ascertain this outcome.

28 days (from randomization through Day 28 after randomization)
Number of Participants Who Died Within 28 Days
Zeitfenster: 28 days (from randomization through Day 28 after randomization)

All-cause mortality from randomization through day 28

28 days (from randomization through Day 28 after randomization)

Andere Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Ventilatory Support-Free Days Through Day 28
Zeitfenster: 28 days (from randomization through Day 28 after randomization)

Ventilatory support-free days are defined as the number of days alive and free from any ventilatory support (invasive or noninvasive) from randomization through day 28. Any use of invasive mechanical ventilation for any duration during a calendar day will count as 1 day with ventilatory support (i.e., not free). Use of noninvasive ventilatory support (noninvasive ventilation or high-flow nasal cannula) for ≥6 hours in any calendar day will count as 1 day with ventilatory support. Participants who die before day 28 will be assigned 0 ventilatory support-free days. If reintubation occurs and the participant later achieves unassisted spontaneous breathing again, ventilatory support-free days will be counted from the end of the last assisted-breathing period through day 28, provided the participant remains alive and free from ventilatory support.

28 days (from randomization through Day 28 after randomization)
Number of Participants With Extubation Failure Within 2 Days
Zeitfenster: 2 days (from randomization through Day 2 after randomization)

Extubation failure is defined as a composite endpoint of reintubation or death within 2 days after randomization

2 days (from randomization through Day 2 after randomization)
Number of Participants With Death or Reintubation Within 28 Days
Zeitfenster: 28 days (from randomization through Day 28 after randomization)

Composite endpoint of reintubation or death within 28 days after randomization

28 days (from randomization through Day 28 after randomization)
Intensive Care Unit-Free Days Through Day 28
Zeitfenster: 28 days (from randomization through Day 28 after randomization)

ICU-free days are defined as the number of days alive and out of the intensive care unit from randomization through day 28. If a patient dies before day 28, the ICU-free days will be counted as zero. Patients discharged from the hospital in unassisted breathing before 28 days will be considered as alive and free from ICU for the remaining days up to 28 days. Patients transferred to another hospital or healthcare unit will be followed up until day 28 to assess this outcome.

28 days (from randomization through Day 28 after randomization)
Number of Participants Who Died in the Hospital
Zeitfenster: From randomization to hospital discharge, up to 90 days

All-cause mortality occurring from randomization until hospital discharge (death before hospital discharge)

From randomization to hospital discharge, up to 90 days
Number of Participants Who Died in the Intensive Care Unit
Zeitfenster: From randomization to ICU discharge, up to 90 days

All-cause mortality occurring from randomization until ICU discharge (death before ICU discharge)

From randomization to ICU discharge, up to 90 days

Mitarbeiter und Ermittler

Hier finden Sie Personen und Organisationen, die an dieser Studie beteiligt sind.

Sponsor

Studienaufzeichnungsdaten

Diese Daten verfolgen den Fortschritt der Übermittlung von Studienaufzeichnungen und zusammenfassenden Ergebnissen an ClinicalTrials.gov. Studienaufzeichnungen und gemeldete Ergebnisse werden von der National Library of Medicine (NLM) überprüft, um sicherzustellen, dass sie bestimmten Qualitätskontrollstandards entsprechen, bevor sie auf der öffentlichen Website veröffentlicht werden.

Haupttermine studieren

Studienbeginn (Geschätzt)

1. Januar 2027

Primärer Abschluss (Geschätzt)

1. Dezember 2029

Studienabschluss (Geschätzt)

1. Februar 2030

Studienanmeldedaten

Zuerst eingereicht

23. Dezember 2025

Zuerst eingereicht, das die QC-Kriterien erfüllt hat

23. Dezember 2025

Zuerst gepostet (Tatsächlich)

7. Januar 2026

Studienaufzeichnungsaktualisierungen

Letztes Update gepostet (Tatsächlich)

22. September 2026

Letztes eingereichtes Update, das die QC-Kriterien erfüllt

18. September 2026

Zuletzt verifiziert

1. September 2026

Mehr Informationen

Begriffe im Zusammenhang mit dieser Studie

Andere Studien-ID-Nummern

  • GS-Wean: PSV SBT

Arzneimittel- und Geräteinformationen, Studienunterlagen

Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt

Nein

Studiert ein von der US-amerikanischen FDA reguliertes Geräteprodukt

Nein

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