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Nasal HFOV Versus Nasal CPAP to Reduce Post-extubation pCO2

21 juillet 2020 mis à jour par: Christoph Czernik, Charite University, Berlin, Germany

Nasal High Frequency Oscillation Ventilation Versus Nasal Continuous Positive Airway Pressure to Reduce Post-extubation pCO2 in Very Low Birth Weight Infants: a Randomized Controlled Trial

To investigate whether nasal high frequency oscillation ventilation (nHFOV) immediately after extubation reduces the arterial partial pressure of carbon dioxide (paCO2) at 72 hours after extubation in comparison with nasal continuous positive airway pressure (nCPAP) in very low birth weight infants (VLBWs).

Aperçu de l'étude

Statut

Résilié

Les conditions

Intervention / Traitement

Description détaillée

Randomized controlled clinical trial comparing nHFOV vs nCPAP immediately after extubation of VLBW infants.

Intervention and treatment protocol as described for the two study arms.

Definition of treatment failure (infant meets at least one criterion):

  • Sustained pCO2 >80 mmHg and pH <7.20 confirmed by arterial or capillary blood gas analysis in spite of optimized non-invasive respiratory support with maximum settings as defined above.
  • Fraction of inspired oxygen (FiO2) >0.6 to maintain peripheral oxygen saturation as measured by pulse oximetry (SpO2) at 90-94% in spite of optimized non-invasive respiratory support with maximum settings as defined above.
  • Reintubation (study patients may be intubated at any time, due to clinical considerations, with or without reaching another criterion of "treatment failure").

Sample size:

Assuming a variability of the paCO2 as previously reported for difficult-to-wean preterm infants in our unit (Czernik C, J Matern Fetal Neonatal Med 2012) and a treatment failure rate of 22% within 72 hours after extubation, we calculated a sample size of 34 patients in each study arm to detect a difference in the paCO2 of 7 mmHg, using a two-sided significance of 0.05 and a power of 0.8.

Randomization:

Sequence generation by an independent statistician and a study nurse. Block randomization using at least two different block sizes. Allocation concealment using sequentially numbered opaque sealed envelopes.

Data monitoring:

By an independent statistician.

Type d'étude

Interventionnel

Inscription (Réel)

6

Phase

  • N'est pas applicable

Contacts et emplacements

Cette section fournit les coordonnées de ceux qui mènent l'étude et des informations sur le lieu où cette étude est menée.

Lieux d'étude

  • Allemagne
      • Berlin, Allemagne
        • Dpt. of Neonatology, Charité - Universitätsmedizin Berlin

Critères de participation

Les chercheurs recherchent des personnes qui correspondent à une certaine description, appelée critères d'éligibilité. Certains exemples de ces critères sont l'état de santé général d'une personne ou des traitements antérieurs.

Critère d'éligibilité

Âges éligibles pour étudier

5 jours à 4 semaines (Enfant)

Accepte les volontaires sains

Non

Sexes éligibles pour l'étude

Tout

La description

Inclusion Criteria:

  • Gestational age <32+0 weeks
  • Birth weight <1500 g
  • Received mechanical ventilation via an endotracheal tube for ≥120 h
  • Caffeine treatment according to unit guidelines
  • paCO2 <65 mmHg with pH >7.2
  • FiO2 25-40% to maintain SpO2 at 90-94%.
  • Time-cycled, pressure-controlled ventilation: PIP ≤22 cm H2O, PEEP ≤6 cm H2O; Volume guarantee ventilation: Working Ppeak ≤22 cm H2O, PEEP ≤6 cm H2O; High frequency oscillation ventilation: Pmean ≤12 cm H2O, Amplitude ≤30 cm H2O
  • Decision of the attending clinician to extubate

Exclusion Criteria:

  • Major congenital malformation requiring surgery
  • Duct-dependent congenital heart disease
  • Neuromuscular disease
  • Participation in another randomized controlled trial
  • Death before reaching the eligibility criteria
  • Hydrocortisone treatment at the time of enrolment
  • Chronological age >28 days

Plan d'étude

Cette section fournit des détails sur le plan d'étude, y compris la façon dont l'étude est conçue et ce que l'étude mesure.

Comment l'étude est-elle conçue ?

Détails de conception

  • Objectif principal: Traitement
  • Répartition: Randomisé
  • Modèle interventionnel: Affectation parallèle
  • Masquage: Aucun (étiquette ouverte)

Armes et Interventions

Groupe de participants / Bras
Intervention / Traitement
Expérimental: nHFOV

Immediately after extubation, nHFOV is provided via binasal prongs. Ventilator settings: Frequency set at 10 Hz, I:E ratio 33:66, amplitude 20 cm H2O, Pmean 8 cm H2O, flow 7 l/min. Set FiO2 to maintain SpO2 at 90-94%.

The weaning process is left to the discretion of the attending physician. Maximum amplitude 30 cm H2O, minimum frequency 9 Hz, maximum Pmean 8 cm H2O.

For infants in the nHFOV-group who "fail" nHFOV (see definition below), but do not need immediate reintubation, a non-invasive "Rescue-Treatment" may be provided. The decision to attempt "Rescue-Treatment", the mode of respiratory support and the ventilator settings used are at the discretion of the attending clinician.
Dispositif: nHFOV
Extubation to ventilator-derived nHFOV using binasal prongs
Comparateur actif: nCPAP

Immediately after extubation, nCPAP is provided via binasal prongs. Ventilator settings: CPAP level set at 8 cm H2O, flow 7 l/min. Set FiO2 to maintain SpO2 at 90-94%.

The weaning process is left to the discretion of the attending physician. Maximum CPAP level 8 cm H2O, maximum flow 8 l/min.

For infants in the nCPAP-group who "fail" nCPAP (see definition below), but do not need immediate reintubation, "Rescue-nHFOV" via binasal prongs may be provided. The decision to attempt "Rescue-nHFOV" and the ventilator settings used are at the discretion of the attending clinician.
Dispositif: nCPAP
Extubation to ventilator-derived nCPAP using binasal prongs

Que mesure l'étude ?

Principaux critères de jugement

Mesure des résultats
Description de la mesure
Délai
paCO2 at 72 h After Extubation
Délai: 64 h to 80 h
Partial pressure of arterial carbon dioxide assessed between 64 and 80 hours, and on average 72 hours.
64 h to 80 h

Mesures de résultats secondaires

Mesure des résultats
Description de la mesure
Délai
pH at 2 h After Extubation
Délai: within the first 6 h after extubation
within the first 6 h after extubation
paO2 at 2 h After Extubation
Délai: within the first 6 h after extubation
within the first 6 h after extubation
paCO2 at 2 h After Extubation
Délai: within the first 6 h after extubation
within the first 6 h after extubation
Base Excess at 2 h After Extubation
Délai: within the first 6 h after extubation
within the first 6 h after extubation
pH at 72 h After Extubation
Délai: 64-80 h after extubation
64-80 h after extubation
paO2 at 72 h After Extubation
Délai: 64-80 h after extubation
64-80 h after extubation
Base Excess at 72 h After Extubation
Délai: 64-80 h after extubation
64-80 h after extubation
Successful Extubation
Délai: 72 h after extubation
Defined as the number of patients breathing spontaneously in their assigned treatment group for ≥72h without reaching the criterion of "treatment failure"
72 h after extubation
Treatment Failure
Délai: within 7 days after extubation
Defined as the number of patients reaching the criterion of "treatment failure"
within 7 days after extubation
Reintubation
Délai: within 7 days after extubation
Defined as the number of patients being reintubated
within 7 days after extubation
Highly Viscous Secretions
Délai: within 72 hours after extubation
Defined as the documented number of episodes of airway obstruction due to highly viscous secretions per patient
within 72 hours after extubation
Other Adverse Effects
Délai: until discharge
Incidences of the following adverse effects: Intraventricular hemorrhage III°-IV° (Papile), surgical necrotizing enterocolitis, pneumothorax, pulmonary interstitial emphysema, persistent ductus arteriosus requiring surgical closure, retinopathy of prematurity requiring laser treatment and/or injection of bevacizumab, death or moderate to severe bronchopulmonary dysplasia (Jobe) at 36 weeks' gestational age, periventricular leukomalacia
until discharge
Duration of Respiratory Support
Délai: until discharge
Total duration of mechanical ventilation, total duration of supplemental oxygen, number of infants discharged with home oxygen
until discharge

Autres mesures de résultats

Mesure des résultats
Description de la mesure
Délai
pH at 2 h After Switch to "Rescue Treatment"
Délai: within the first 6 h after switch to "rescue treatment"
within the first 6 h after switch to "rescue treatment"
paO2 at 2 h After Switch to "Rescue Treatment"
Délai: within the first 6 h after switch to "rescue treatment"
within the first 6 h after switch to "rescue treatment"
paCO2 at 2 h After Switch to "Rescue Treatment"
Délai: within the first 6 h after switch to "rescue treatment"
within the first 6 h after switch to "rescue treatment"
Base Excess at 2 h After Switch to "Rescue Treatment"
Délai: within the first 6 h after switch to "rescue treatment"
within the first 6 h after switch to "rescue treatment"
Successful Rescue
Délai: 72 h after switch to "rescue" treatment
Defined as spontaneous breathing for ≥72h after starting "rescue" therapy, without reaching the criterion of "treatment failure"
72 h after switch to "rescue" treatment

Collaborateurs et enquêteurs

C'est ici que vous trouverez les personnes et les organisations impliquées dans cette étude.

Parrainer

Charite University, Berlin, Germany

Les enquêteurs

  • Chercheur principal: Christoph Czernik, MD PhD, Charite University, Berlin, Germany

Publications et liens utiles

La personne responsable de la saisie des informations sur l'étude fournit volontairement ces publications. Il peut s'agir de tout ce qui concerne l'étude.

Publications générales

Dates d'enregistrement des études

Ces dates suivent la progression des dossiers d'étude et des soumissions de résultats sommaires à ClinicalTrials.gov. Les dossiers d'étude et les résultats rapportés sont examinés par la Bibliothèque nationale de médecine (NLM) pour s'assurer qu'ils répondent à des normes de contrôle de qualité spécifiques avant d'être publiés sur le site Web public.

Dates principales de l'étude

Début de l'étude (Réel)

1 janvier 2015

Achèvement primaire (Réel)

31 décembre 2017

Achèvement de l'étude (Réel)

31 décembre 2017

Dates d'inscription aux études

Première soumission

10 janvier 2015

Première soumission répondant aux critères de contrôle qualité

13 janvier 2015

Première publication (Estimation)

16 janvier 2015

Mises à jour des dossiers d'étude

Dernière mise à jour publiée (Réel)

5 août 2020

Dernière mise à jour soumise répondant aux critères de contrôle qualité

21 juillet 2020

Dernière vérification

1 juillet 2020

Plus d'information

Termes liés à cette étude

Mots clés

Termes MeSH pertinents supplémentaires

Autres numéros d'identification d'étude

  • EA2/011/12

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