Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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NOT_YET_RECRUITING
NA
25 participants
INTERVENTIONAL
2025-12-22
2027-01-31
Brief Summary
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Does ECNP during LISA improve surfactant distribution and oxygenation in preterm infants with RDS?
Does ECNP reduce the occurrence of complications such as desaturation, bradycardia, or apnea during the procedure?
Does ECNP reduce the need for repeated surfactant administration?
Researchers will evaluate ECNP combined with LISA in preterm infants on HFNC or CPAP to see if it improves outcomes compared to standard methods.
Participants will:
Receive LISA with ECNP support via a soft thoracoabdominal cuirass
Be monitored for procedural complications like desaturation, bradycardia, or apnea
Have their oxygenation levels, surfactant distribution, and need for repeated surfactant doses assessed
Primary Outcome:
The procedure will be considered safe if no more than 20% of participants experience serious adverse events, such as apnea requiring positive pressure ventilation or persistent desaturation.
Secondary Outcomes:
Completion of LISA without interruption due to complications
Reduction of FiO₂ to ≤0.25 within 3 hours post-surfactant administration
Avoidance of repeated surfactant doses via the INSURE method
Detailed Description
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LISA using thin catheters is a widely adopted method for surfactant administration in spontaneously breathing neonates receiving CPAP or HFNC. Although effective, the procedure is frequently complicated by transient hypoxemia, bradycardia, apnea, and surfactant reflux, occasionally requiring temporary interruption or conversion to more invasive therapy. These complications may impair surfactant delivery, contribute to uneven lung aeration, and lead to the need for repeated dosing. To date, the integration of continuous negative-pressure support during LISA has not been evaluated in clinical practice.
In this single-arm feasibility study, ECNP will be initiated shortly before and maintained throughout the LISA procedure. The study will assess whether negative-pressure support stabilizes spontaneous ventilation, improves oxygenation, and facilitates more uniform surfactant distribution during administration. Safety will be evaluated based on the occurrence of serious procedure-related events requiring interruption, such as significant desaturation, bradycardia, or apnea requiring positive-pressure ventilation. Effectiveness will be explored through measures of post-procedure oxygenation stability, need for repeat surfactant dosing, and indicators of adequate surfactant distribution (e.g., imaging assessments when clinically indicated).
This exploratory study is designed to inform the potential utility of ECNP as an adjunct during LISA and to determine whether a larger controlled trial is warranted. The protocol focuses on documenting feasibility (ability to complete LISA under ECNP), characterizing physiologic responses, and capturing any adverse events specifically associated with ECNP use in this population
Conditions
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Study Design
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NA
SINGLE_GROUP
TREATMENT
NONE
Study Groups
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ENCP LISA
Infants will remain on CPAP (6-8 cm H₂O) or HFNC (8 L/min) with FiO₂ titrated to maintain SpO₂ ≥92%. LISA catheter will be introduced under direct laryngoscopic vision 1-2 cm below the vocal cords. Two fractional boluses of surfactant (Curosurf, 200 mg/kg) will be administered within 2 minutes during ECNP support using Hayek RTX via a well-fitted thoracoabdominal cuirass. ECNP will be maintained at -10 cmH₂O throughout administration and for 10 minutes after. FiO₂ will not be reduced until SpO₂ stabilizes ≥92% and FiO₂ is ≤0.25.
ENCP
Surfactant will be given in two doses within 2 minutes while continuous negative pressure is applied using the Hayek RTX thoracoabdominal cuirass. Negative pressure will be maintained during and for 10 minutes after administration.
Interventions
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ENCP
Surfactant will be given in two doses within 2 minutes while continuous negative pressure is applied using the Hayek RTX thoracoabdominal cuirass. Negative pressure will be maintained during and for 10 minutes after administration.
Eligibility Criteria
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Inclusion Criteria
* FiO₂ \> 0.30 for more than 30 minutes on CPAP (6 - 8 cm H₂O) or HFNC (8 l/min)
* Increased work of breathing despite FiO₂ \< 0.30
* Birth weight \> 800 g
* X-ray confirmed RDS
* Availability of all required devices and appropriately fitting cuirass
Exclusion Criteria
* Major congenital anomalies (cardiac, pulmonary, chromosomal)
* Known or suspected neuromuscular or metabolic disorders
* Lack or withdrawal of informed parental consent
1 Hour
3 Days
ALL
No
Sponsors
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Charles University, Czech Republic
OTHER
Responsible Party
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Ján Hlivák
Principal investigator
Central Contacts
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References
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Deep A, De Munter C, Desai A. Negative pressure ventilation in pediatric critical care setting. Indian J Pediatr. 2007 May;74(5):483-8. doi: 10.1007/s12098-007-0082-2.
Kribs A, Roll C, Gopel W, Wieg C, Groneck P, Laux R, Teig N, Hoehn T, Bohm W, Welzing L, Vochem M, Hoppenz M, Buhrer C, Mehler K, Stutzer H, Franklin J, Stohr A, Herting E, Roth B; NINSAPP Trial Investigators. Nonintubated Surfactant Application vs Conventional Therapy in Extremely Preterm Infants: A Randomized Clinical Trial. JAMA Pediatr. 2015 Aug;169(8):723-30. doi: 10.1001/jamapediatrics.2015.0504.
Aldana-Aguirre JC, Pinto M, Featherstone RM, Kumar M. Less invasive surfactant administration versus intubation for surfactant delivery in preterm infants with respiratory distress syndrome: a systematic review and meta-analysis. Arch Dis Child Fetal Neonatal Ed. 2017 Jan;102(1):F17-F23. doi: 10.1136/archdischild-2015-310299. Epub 2016 Nov 15.
Dargaville PA, Aiyappan A, Cornelius A, Williams C, De Paoli AG. Preliminary evaluation of a new technique of minimally invasive surfactant therapy. Arch Dis Child Fetal Neonatal Ed. 2011 Jul;96(4):F243-8. doi: 10.1136/adc.2010.192518. Epub 2010 Oct 21.
Roberts CT, Halibullah I, Bhatia R, Green EA, Kamlin COF, Davis PG, Manley BJ. Outcomes after Introduction of Minimally Invasive Surfactant Therapy in Two Australian Tertiary Neonatal Units. J Pediatr. 2021 Feb;229:141-146. doi: 10.1016/j.jpeds.2020.10.025. Epub 2020 Oct 14.
Dargaville PA, Ali SKM, Jackson HD, Williams C, De Paoli AG. Impact of Minimally Invasive Surfactant Therapy in Preterm Infants at 29-32 Weeks Gestation. Neonatology. 2018;113(1):7-14. doi: 10.1159/000480066. Epub 2017 Sep 19.
Kurepa D, Perveen S, Lipener Y, Kakkilaya V. The use of less invasive surfactant administration (LISA) in the United States with review of the literature. J Perinatol. 2019 Mar;39(3):426-432. doi: 10.1038/s41372-018-0302-9. Epub 2019 Jan 11.
Hertzog MA. Considerations in determining sample size for pilot studies. Res Nurs Health. 2008 Apr;31(2):180-91. doi: 10.1002/nur.20247.
Mohammadizadeh M, Ardestani AG, Sadeghnia AR. Early administration of surfactant via a thin intratracheal catheter in preterm infants with respiratory distress syndrome: Feasibility and outcome. J Res Pharm Pract. 2015 Jan-Mar;4(1):31-6. doi: 10.4103/2279-042X.150053.
Teare MD, Dimairo M, Shephard N, Hayman A, Whitehead A, Walters SJ. Sample size requirements to estimate key design parameters from external pilot randomised controlled trials: a simulation study. Trials. 2014 Jul 3;15:264. doi: 10.1186/1745-6215-15-264.
Whitehead AL, Julious SA, Cooper CL, Campbell MJ. Estimating the sample size for a pilot randomised trial to minimise the overall trial sample size for the external pilot and main trial for a continuous outcome variable. Stat Methods Med Res. 2016 Jun;25(3):1057-73. doi: 10.1177/0962280215588241. Epub 2015 Jun 19.
Other Identifiers
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117/25 S-IV AP
Identifier Type: -
Identifier Source: org_study_id