Preterm Birth, Respiratory Distress Syndrome, Surfactant Deficiency Syndrome Neonatal
Conditions
Brief summary
Respiratory distress syndrome is the most common cause of respiratory failure in preterm infants. Treatment consists of respiratory support and exogenous surfactant administration. Commonly, surfactant is administered via an endotracheal tube during mechanical ventilation. However, mechanical ventilation is considered an important risk factor for developing bronchopulmonary dysplasia. Surfactant nebulisation during noninvasive ventilation may offer an alternative method for surfactant administration and has been shown to be promising in terms of physiological as well as clinical changes. In preterm infants with respiratory distress syndrome, the effect of intratracheally administered surfactant on lung function during invasive ventilation has been studied extensively. However, the effect of early postnatal surfactant nebulization remains unclear. Therefore, the investigators plan to conduct a randomized controlled trial in order to investigate the effect of surfactant nebulization immediately after birth on early postnatal lung volume and short-term respiratory stability.
Interventions
DRUGSurfactant nebulisation
200 mg/kg body weight nebulised surfactant (Poractant alfa, Chiesi Farmaceutici SpA, Parma, Italy) via a customised vibrating membrane nebuliser (eFlow neonatal nebuliser system, PARI Pharma, Starnberg).
Sponsors
University of Zurich
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
SINGLE (Subject)
Eligibility
Sex/Gender
ALL
Age
No minimum to 3 Minutes
Healthy volunteers
No
Inclusion criteria
* inborn * gestational age at birth from 26 0/7 to 31 6/7 weeks * written informed consent
Exclusion criteria
* severe congenital malformation adversely affecting surfactant nebulisation or life expectancy * a priori palliative care * genetically defined syndrome
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| EIT: End-expiratory lung impedance (EELI) | Between birth and 30 minutes of life. | Change in EELI using electrical impedance tomography (arbitrary units per kilogram) |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Respiratory: Tidal volume (Vt) | During the first 30 minutes of life. | Continuous recording of Vt in the control group (cmH2O). |
| Clinical: Retinopathy of prematurity (ROP) | At 36 weeks postmenstrual age. | ROP, maximum grade \[number of cases\] |
| Clinical: Necrotizing enterocolitis (NEC) | At 36 weeks postmenstrual age. | NEC, surgically treated \[number of cases\] |
| Clinical: Blood-culture positive sepsis | At 36 weeks postmenstrual age. | Blood-culture positive sepsis \[number of cases\] |
| Physiological: Body temperature | In the delivery room. | Number of events with body temperature \<36.5 or \>37.5°C. |
| EIT: End-expiratory lung impedance (EELI) | At 6, 12, and 24 hours of life and at 36 weeks postmenstrual age | EELI using electrical impedance tomography (arbitrary units per kilogram). |
| EIT: Regional ventilation distribution | At 6, 12, and 24 hours of life and at 36 weeks postmenstrual age. | Regional ventilation distribution using electrical impedance tomography (arbitrary units per kilogram). |
| EIT: Tidal volumes | At 6, 12, and 24 hours of life and at 36 weeks postmenstrual age. | Tidal volumes using electrical impedance tomography (arbitrary units per kilogram). |
| EIT: Association between EELI losses and SpO2/FiO2 ratio. | At 6, 12, and 24 hours of life. | Association between the number of EELI losses \>50% and the SpO2/FiO2 ratio. |
| EIT: Association between EELI losses and need/level of respiratory support. | At 6, 12, and 24 hours of life. | Association between the number of EELI losses \>50% and the need/level of respiratory support. |
| Physiological: Heart rate | For the first 30 minutes after birth, as well as at 6, 12, and 24 hours of life. | Continuous recording of heart rate (beats per minute). |
| Physiological: Oxygen saturation (SpO2) | For the first 30 minutes after birth, and at 6, 12, and 24 hours of life. | Continuous recording of SpO2 (%). |
| Physiological: Fraction of inspired oxygen | For the first 30 minutes after birth, and at 6, 12, and 24 hours of life. | Continuous recording of fraction of inspired oxygen. |
| Physiological: SpO2/FiO2 ratio | At 6, 12, and 24 hours of life. | SpO2/FiO2 ratio. |
| Respiratory: Peak inspiratory pressure (PIP) | During the first 30 minutes of life. | Continuous recording of PIP in the control group (cmH2O). |
| Respiratory: Positive end-expiratory pressure (PEEP) | During the first 30 minutes of life. | Continuous recording of PEEP in the control group (cmH2O). |
| Respiratory: PEEP (positive end-expiratory pressure) | At 6, 12, and 24 hours of life. | PEEP during noninvasive and invasive ventilation \[mbar\] |
| Respiratory: PIP (peak inspiratory pressure) | At 6, 12, and 24 hours of life. | PIP during noninvasive and invasive ventilation \[mbar\] |
| Respiratory: Respiratory rate | At 6, 12, and 24 hours of life. | Respiratory rate during noninvasive and invasive ventilation \[breaths per minute\] |
| Clinical: Length and type of noninvasive respiratory support | During the first 30 minutes of life. | Total length of CPAP/NIPPV support assessed retrospectively using video recordings (min) |
| Clinical: Total time on noninvasive and invasive respiratory support | Until 36 weeks postmenstrual age | Total time on invasive and noninvasive respiratory support (days) |
| Clinical: Frequency and duration of facemask repositioning | During the first 30 minutes after birth. | Frequency and duration of facemask repositioning assessed retrospectively using video recordings. |
| Clinical: Intubation | At 24 and 72 hours of life, at 7 days of life. Until 36 weeks postmenstrual age. | Intubation rate (%) |
| Clinical: Time to first intubation | From birth until 36 weeks postmenstrual age. | Time to first intubation (days, minutes) |
| Clinical: Number of episodes of desaturation and bradycardia | During the first 24 hours of life. | Number of episodes of desaturation (SpO2 \<80%) and bradycardia (\<80 beats per minute) |
| Clinical: Bronchopulmonary dysplasia (BPD) | At 36 weeks postmenstrual age. | BPD, maximum grade \[number of cases\] |
| Clinical: Intraventricular haemorrhage (IVH) | At 36 weeks postmenstrual age. | IVH, maximum grade \[number of cases\] |
Other
| Measure | Time frame | Description |
|---|---|---|
| Safety: Air leak | Until 36 weeks postmenstrual age. | Air leak \[number of cases\] |
| Safety: Death | Until 36 weeks postmenstrual age. | Death \[number of cases\] |
| Safety: Pulmonary haemorrhage | Until 36 weeks postmenstrual age. | Pulmonary haemorrhage \[number of cases\] |
Countries
Switzerland
Outcome results
None listed