Effect of Changing Levels of Neurally Adjusted Ventilatory Assist (NAVA) in Newborns

NCT03780842 | Completed

• 1 other identifier: Pilot breakpoint NAVA
• Study Type: interventional
• Target: 21
• Locations: 1 country
• Sites: 1

Brief Summary

To examine the effect of changing levels of support during NAVA-ventilation ("NAVA-level") on electrical diaphragm activity of the newborn on invasive or non-invasive NAVA ventilation. The aim is to explore whether a so-called 'breakpoint', as defined in previous studies on NAVA ventilation in adults and children(1, 9), can be determined in newborn infants. Knowledge of this breakpoint will be used to optimise the settings of NAVA level at initiation of invasive or non-invasive NAVA ventilation. This is an explorative study conducted in preparation of a randomized controlled trial that is planned in the near future to compare the effects of non-invasive NAVA with nasal continuous positive airway pressure (CPAP) in newborn infants.

Conditions

Newborn Morbidity

Outcome Measures

Primary Outcomes (1)

• Optimal NAVA level to unload the diaphragm

  The aim is to explore whether a so-called 'breakpoint', as defined in previous studies on NAVA ventilation in adults and children(1, 9), can be determined in newborn infants. Knowledge of this breakpoint will be used to optimise the settings of NAVA level at initiation of invasive or non-invasive NAVA ventilation.

  24 minutes

Study Arms (2)

Invasive NAVA ventilation

EXPERIMENTAL

A titration protocol will be used for changing NAVA levels in intubated newborns

Device: NAVA level

Non-invasive NAVA ventilation

EXPERIMENTAL

A titration protocol will be used for changing NAVA levels in newborns with non-invasive NAVA ventilation (= with a nasal interface).

Device: NAVA level

Interventions

NAVA level DEVICE

A titration protocol will be used for changing NAVA levels. The NAVA level will be reduced to 0,5 cmH2O/µV for 3 minutes as a starting point. Limit peak pressure will be set to 35cmH2O (i.e. according to the standard manufacturer's settings) the maximum pressure that can be delivered to the patient is cut off at 30cmH2O). Other ventilator settings will be left unchanged and are as clinically indicated. Ventilator settings will be according to our standard of care and as following: PEEP between 4 and 7 mmHg, apnea time 2-5 sec, back-up ventilation with a pressure above PEEP between 5 and 15 mmHg and a frequency between 30 and 50 per minute. Starting from a NAVA level of 0,5 cmH20/µV the level will be increased by 0,5 cmH2O/µV every 3 minutes until reaching a maximum NAVA level of 4,0 cmH2O/µV.

Invasive NAVA ventilation; Non-invasive NAVA ventilation

Eligibility Criteria

• Age: Up to 20 Weeks
• Sex: all
• Healthy Volunteers: No
• Age Groups: Child (0-17)

You may qualify if:

• Newborns admitted to the NICU in need for respiratory support and put on invasive or non-invasive NAVA by the attending physician. Patients will be included when they are clinically stable and within 24h after starting NAVA or nivNAVA.

You may not qualify if:

• \- Congenital malformations of the diaphragm or respiratory system, including congenital diaphragmatic hernia.
• Patients with abnormalities of the upper airway (e.g. vocal cord paralysis, post-extubation laryngeal edema, Pierre-Robin sequence…).
• More than 20% of time spent in back-up ventilationWhen a patient on NAVA ventilation is apneic for a certain period of time (apnea time), the ventilator switches tot backup-ventilation. Backup-ventilation is pressure controlled, the apnea time can variate between 2 and 10 seconds.
• Clinically unstable patients:
• hemodynamic instability as defined by need of inotropic support or
• rapid respiratory deterioration on NAVA ventilation.
• No informed consent.

Sponsors & Collaborators

• Julie Lefevere: lead

Study Sites (1)

UZ Brussel

Jette, 1090, Belgium

Location

Related Publications (1)

• Lefevere J, Van Delft B, Vervoort M, Cools W, Cools F. Non-invasive neurally adjusted ventilatory assist in preterm infants with RDS: effect of changing NAVA levels. Eur J Pediatr. 2022 Feb;181(2):701-707. doi: 10.1007/s00431-021-04244-3. Epub 2021 Sep 17.

  PMID: 34533644 DERIVED

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: NON RANDOMIZED
• Masking: NONE
• Purpose: SUPPORTIVE CARE
• Intervention Model: SINGLE GROUP
• Sponsor Type: OTHER
• Responsible Party: SPONSOR INVESTIGATOR
• PI Title: Resident

Model Details: Prospective, interventional, exploratory study in a convenience sample

Study Record Dates

• First Submitted: December 12, 2018
• First Posted: December 19, 2018
• Study Start: December 10, 2018
• Primary Completion: November 30, 2021
• Study Completion: February 28, 2022
• Last Updated: September 13, 2023

Record last verified: 2023-09

Locations

BE (1)