Optimising Ventilation in Preterms With Closed-loop Oxygen Control

NCT ID: NCT05030337

Last Updated: 2024-10-23

Study Results

Results pending

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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Recruitment Status

RECRUITING

Clinical Phase

NA

Total Enrollment

70 participants

Study Classification

INTERVENTIONAL

Study Start Date

2021-09-05

Study Completion Date

2025-03-31

Brief Summary

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Many premature infants require respiratory support in the newborn period. Mechanical ventilation although life-saving is linked to complications for the lungs and other organs and its duration should be kept to a minimum. The use of supplemental oxygen may also increase the risk of comorbidities such as retinopathy of prematurity. Therefore, oxygen saturation levels and the amount of inspired oxygen concentration provided should be continuously monitored.

Oxygen control can be performed manually or with the use of a computer software incorporated into the ventilator that is called 'closed loop automated oxygen control'(CLAC). The software uses an algorithm that automatically adjusts the amount of inspired oxygen to maintain oxygen saturation levels in a target range. Evidence suggests that CLAC increases the time spent in the desired oxygen target range but there are no data to determine the effect on important clinical outcomes. A previous study has also demonstrated that CLAC reduces the inspired oxygen concentration more rapidly when compared to manual control. That could help infants come off the ventilator sooner.

With this study we want to compare the time preterm infants spend on the ventilator when we use the software to automatically monitor their oxygen levels with those infants whose oxygen is adjusted manually by the clinical team. That could help us understand if the use of automated oxygen control reduces the duration of mechanical ventilation and subsequently the complications related to it.

Detailed Description

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This will be a randomised controlled trial. The investigators aim to recruit a minimum of seventy premature ventilated infants born at less than 31 weeks gestation. Participants will be randomised to either closed-loop automated oxygen control or manually controlled oxygen from recruitment to successful extubation. The investigators will also record basic epidemiologic parameters and associated comorbidities that may impact on the duration of mechanical ventilation. Infants with known congenital anomalies will be excluded from the study.

Informed written consent will be requested from the parents or legal guardians of the infants and the attending Neonatal Consultant will be requested to assent to the study.

Eligible infants whose parents consent to the study will be enrolled within 48 hours of initiation of mechanical ventilation.

Randomisation will be performed using an online randomisation generator. Patients will be ventilated using SLE6000 ventilators. Ventilation settings will be manually adjusted by the clinical team as per unit's protocol. The intervention group, in addition to standard care will be also connected to the OxyGenie closed-loop oxygen saturation monitoring software (SLE). This software uses oxygen saturations from the SpO2 probe attached to the neonate, fed into an algorithm, to automatically adjust the percentage of inspired oxygen to maintain oxygen saturations within the target range. Manual adjustments including the percentage of FiO2 will be allowed at any point during the study if deemed appropriate by the clinical team.

The nurse-to-patient ratio will be according to the unit's protocol that is determined on the patient's acuity.

Patients will be studied from enrolment until successful extubation. If an infant fails extubation and requires reintubation within 48 hours, he will be studied in his initial arm if less than 28 days old. Therefore, for those infants randomised at the intervention group CLAC will resume. Preterm infants that remain ventilated beyond day 28 of life will continue at their study arm (closed-loop automated oxygen control or manual oxygen control) till their first extubation attempt.

Conditions

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Infant, Premature, Diseases Airway Morbidity Mechanical Ventilation Complication

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Participating infants will be randomised either to manual oxygen control or closed-loop automated oxygen control, adjusted by clinical staff as necessary.
Primary Study Purpose

OTHER

Blinding Strategy

NONE

Study Groups

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Manual oxygen control

Standard ventilation with inspired oxygen concentration adjusted manually as per unit's protocol.

Group Type NO_INTERVENTION

No interventions assigned to this group

Closed-loop automated oxygen control

Ventilation with Oxygenie software (closed-loop automated oxygen control system), adjusted by clinical staff as necessary

Group Type OTHER

Closed-loop automated oxygen control (Oxygenie, SLE 6000)

Intervention Type DEVICE

The OxyGenie closed-loop oxygen saturation monitoring software (SLE) uses oxygen saturations from the SpO2 probe attached to the neonate, fed into an algorithm, to automatically adjust the percentage of inspired oxygen to maintain oxygen saturations within the target range. Manual adjustments including the percentage of FiO2 will be allowed at any point during the study if deemed appropriate by the clinical team.

Interventions

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Closed-loop automated oxygen control (Oxygenie, SLE 6000)

The OxyGenie closed-loop oxygen saturation monitoring software (SLE) uses oxygen saturations from the SpO2 probe attached to the neonate, fed into an algorithm, to automatically adjust the percentage of inspired oxygen to maintain oxygen saturations within the target range. Manual adjustments including the percentage of FiO2 will be allowed at any point during the study if deemed appropriate by the clinical team.

Intervention Type DEVICE

Eligibility Criteria

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Inclusion Criteria

* Preterm infants less than 31 weeks completed gestation at birth requiring mechanical ventilation and admitted to King's NICU in the first 48 hours after birth

Exclusion Criteria

* Preterm infants above 31 weeks completed gestation or term born infants
* Infants with major congenital abnormalities
Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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King's College London

OTHER

Sponsor Role collaborator

King's College Hospital NHS Trust

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Anne Greenough, Professor

Role: PRINCIPAL_INVESTIGATOR

King's College Hospital/ King's College London

Locations

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King's College Hospital NHS Foundation Trust

London, , United Kingdom

Site Status RECRUITING

Countries

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United Kingdom

Central Contacts

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Ourania Kaltsogianni, MSc

Role: CONTACT

(+44)02032999000 ext. 38495

Theodore Dassios, Consultant Neonatologist

Role: CONTACT

Facility Contacts

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Ourania Kaltsogianni

Role: primary

References

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Greenough A. Long-term respiratory consequences of premature birth at less than 32 weeks of gestation. Early Hum Dev. 2013 Oct;89 Suppl 2:S25-7. doi: 10.1016/j.earlhumdev.2013.07.004. Epub 2013 Jul 30.

Reference Type BACKGROUND
PMID: 23910576 (View on PubMed)

Di Fiore JM, Bloom JN, Orge F, Schutt A, Schluchter M, Cheruvu VK, Walsh M, Finer N, Martin RJ. A higher incidence of intermittent hypoxemic episodes is associated with severe retinopathy of prematurity. J Pediatr. 2010 Jul;157(1):69-73. doi: 10.1016/j.jpeds.2010.01.046. Epub 2010 Mar 20.

Reference Type BACKGROUND
PMID: 20304417 (View on PubMed)

Hagadorn JI, Furey AM, Nghiem TH, Schmid CH, Phelps DL, Pillers DA, Cole CH; AVIOx Study Group. Achieved versus intended pulse oximeter saturation in infants born less than 28 weeks' gestation: the AVIOx study. Pediatrics. 2006 Oct;118(4):1574-82. doi: 10.1542/peds.2005-0413.

Reference Type BACKGROUND
PMID: 17015549 (View on PubMed)

Ford SP, Leick-Rude MK, Meinert KA, Anderson B, Sheehan MB, Haney BM, Leeks SR, Simon SD, Jackson JK. Overcoming barriers to oxygen saturation targeting. Pediatrics. 2006 Nov;118 Suppl 2:S177-86. doi: 10.1542/peds.2006-0913P.

Reference Type BACKGROUND
PMID: 17079621 (View on PubMed)

Sink DW, Hope SA, Hagadorn JI. Nurse:patient ratio and achievement of oxygen saturation goals in premature infants. Arch Dis Child Fetal Neonatal Ed. 2011 Mar;96(2):F93-8. doi: 10.1136/adc.2009.178616. Epub 2010 Oct 30.

Reference Type BACKGROUND
PMID: 21037284 (View on PubMed)

Sturrock S, Ambulkar H, Williams EE, Sweeney S, Bednarczuk NF, Dassios T, Greenough A. A randomised crossover trial of closed loop automated oxygen control in preterm, ventilated infants. Acta Paediatr. 2021 Mar;110(3):833-837. doi: 10.1111/apa.15585. Epub 2020 Oct 6.

Reference Type BACKGROUND
PMID: 32969040 (View on PubMed)

Sturrock S, Williams E, Dassios T, Greenough A. Closed loop automated oxygen control in neonates-A review. Acta Paediatr. 2020 May;109(5):914-922. doi: 10.1111/apa.15089. Epub 2019 Nov 27.

Reference Type BACKGROUND
PMID: 31715041 (View on PubMed)

Dani C. Automated control of inspired oxygen (FiO2 ) in preterm infants: Literature review. Pediatr Pulmonol. 2019 Mar;54(3):358-363. doi: 10.1002/ppul.24238. Epub 2019 Jan 10.

Reference Type BACKGROUND
PMID: 30632296 (View on PubMed)

Hunt KA, Dassios T, Ali K, Greenough A. Prediction of bronchopulmonary dysplasia development. Arch Dis Child Fetal Neonatal Ed. 2018 Nov;103(6):F598-F599. doi: 10.1136/archdischild-2018-315343. Epub 2018 Jun 12. No abstract available.

Reference Type BACKGROUND
PMID: 29895571 (View on PubMed)

Dimitriou G, Greenough A, Endo A, Cherian S, Rafferty GF. Prediction of extubation failure in preterm infants. Arch Dis Child Fetal Neonatal Ed. 2002 Jan;86(1):F32-5. doi: 10.1136/fn.86.1.f32.

Reference Type BACKGROUND
PMID: 11815545 (View on PubMed)

Vliegenthart RJS, van Kaam AH, Aarnoudse-Moens CSH, van Wassenaer AG, Onland W. Duration of mechanical ventilation and neurodevelopment in preterm infants. Arch Dis Child Fetal Neonatal Ed. 2019 Nov;104(6):F631-F635. doi: 10.1136/archdischild-2018-315993. Epub 2019 Mar 20.

Reference Type BACKGROUND
PMID: 30894396 (View on PubMed)

Kaltsogianni O, Dassios T, Greenough A. Does closed-loop automated oxygen control reduce the duration of mechanical ventilation? A randomised controlled trial in ventilated preterm infants. Trials. 2022 Apr 8;23(1):276. doi: 10.1186/s13063-022-06222-y.

Reference Type DERIVED
PMID: 35395952 (View on PubMed)

Other Identifiers

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KCH21-111

Identifier Type: OTHER

Identifier Source: secondary_id

297749

Identifier Type: -

Identifier Source: org_study_id

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