Estimating neonatal oral endotracheal tube depth of insertion using weight or suprasternal palpation of the tip

ISRCTN ISRCTN13570106
DOI https://doi.org/10.1186/ISRCTN13570106
Secondary identifying numbers NEDI31
Submission date
15/11/2016
Registration date
01/12/2016
Last edited
09/06/2020
Recruitment status
No longer recruiting
Overall study status
Completed
Condition category
Neonatal Diseases
Prospectively registered
Protocol
Statistical analysis plan
Results
Individual participant data

Plain English Summary

Background and study aims
Many newborn babies have breathing difficulties after birth and need help. Some infants require a plastic tube (called an endotracheal tube) to be inserted into their windpipe (trachea) that is then connected to a breathing machine (ventilator). Endotracheal tubes are inserted through the baby’s mouth into their windpipe. It is important that the tip of the tube is in the correct position so that both lungs are ventilated equally. When doctors are inserting the tube, they usually estimate how far the tube needs to be inserted by using the birth weight of the baby. After the tube is inserted, it is secured and a chest x-ray is done to show the tube position. When the distance to which the tube is inserted is estimated using the baby’s weight it is in the correct position about 50% of the time. The aim of this study is to find out whether using a different technique to judge the depth of insertion, by gently pressing on the V-shaped notch above the breastbone and feeling the tube as it passes under one’s finger, would lead to more tubes being better placed.

Who can participate?
Newborn babies who are intubated in the neonatal intensive care unit (NICU)

What does the study involve?
Babies are randomly allocated to have the depth to which the endotracheal tube is inserted estimated either by feeling the tip of the tube or by using their birth weight. All babies have the endotracheal tube position checked with a chest X-ray. Babies do not undergo any extra tests for this study.

What are the possible benefits and risks of participating?
One method of estimating the insertion depth may be better, but this will not be known until the study has finished and the results have been analysed. There are no known extra risks of taking part in the study.

Where is the study run from?
National Maternity Hospital (Ireland)

When is the study starting and how long is it expected to run for?
December 2016 to June 2019

Who is funding the study?
National Maternity Hospital (Ireland)

Who is the main contact?
1. Prof. Colm O'Donnell
2. Dr Madeleine Murphy

Contact information

Prof Colm O'Donnell
Scientific

Neonatal Unit
National Maternity Hospital
Holles Street
Dublin
D02 YH21
Ireland

Study information

Study designSingle-centre unmasked randomised controlled trial
Primary study designInterventional
Secondary study designRandomised controlled trial
Study setting(s)Hospital
Study typeTreatment
Participant information sheet Not available in web format, please use contact details to request a participant information sheet
Scientific titleEstimating neonatal oral endotracheal tube depth of insertion using weight or suprasternal palpation of the tip: a randomised controlled trial
Study acronymNEDI 3
Study hypothesisEstimating the appropriate depth of insertion of oral endotracheal tubes in newborns using palpation of the tip of the endotracheal tube in the suprasternal notch is more accurate than using a weight based formula.
Ethics approval(s)Research Ethics Committee, National Maternity Hospital, 14/11/2016, ref: EC 34.2016
ConditionEndotracheal intubation of the newborn infant
InterventionInfants who are intubated in the neonatal intensive care unit (NICU) will be randomised using sequentially numbered sealed opaque envelopes to have the depth of insertion estimated using:
1. Intervention: suprasternal palpation of the endotracheal tube (ETT) tip
2. Control: weight-based formula [insertion depth (cm) = weight (kg) + 6]

All babies will have the ETT position checked with a chest X-ray.
Intervention typeProcedure/Surgery
Primary outcome measureETT tip in correct position (between upper border of T1 and lower border of T2) on chest X-ray (CXR) taken to confirm position immediately after intubation
Secondary outcome measures1. ETT tip above T1 on CXR taken to confirm position immediately after intubation
2. ETT tip below T2 on CXR taken to confirm position immediately after intubation
3. Number of extubations before CXR
4. Repositioning of ETT following CXR
5. Air leaks (pneumothorax, pneumomediastinum, pulmonary interstitial emphysema) occurring before hospital discharge (will vary for participants, usually depending on gestational age at birth)
6. Duration of ventilation, assessed before hospital discharge
7. Oxygen therapy at 28 days of life
8. Oxygen therapy at 36 weeks corrected gestational age
9. Death before discharge from hospital
Overall study start date01/12/2016
Overall study end date30/06/2019

Eligibility

Participant type(s)Patient
Age groupNeonate
SexBoth
Target number of participants116
Total final enrolment118
Participant inclusion criteriaNewborn infants of any gestational age and either gender intubated in NICU
Participant exclusion criteriaInfants with upper airway anomalies (e.g. Pierre-Robin sequence) or lung abnormalities (e.g. congenital diaphragmatic hernia) that may distort the upper airway anatomy and alter the position of the ETT tip on CXR
Recruitment start date02/12/2016
Recruitment end date31/12/2018

Locations

Countries of recruitment

  • Ireland

Study participating centre

National Maternity Hospital
Holles Street
Dublin
D02 YH21
Ireland

Sponsor information

National Maternity Hospital
Hospital/treatment centre

Neonatal Unit
Holles Street
Dublin
D02 YH21
Ireland

ROR logo "ROR" https://ror.org/03jcxa214

Funders

Funder type

Hospital/treatment centre

National Maternity Hospital

No information available

Results and Publications

Intention to publish date30/06/2020
Individual participant data (IPD) Intention to shareYes
IPD sharing plan summaryAvailable on request
Publication and dissemination planFindings will be presented at international scientific conferences (e.g. European Society for Paediatric Research, Pediatric Academic Societies) before submitting them in a manuscript for publication at a peer-reviewed scientific journal.
IPD sharing planThe datasets generated during and/or analysed during the current study will be available upon request from Prof. Colm O'Donnell.

Study outputs

Output type Details Date created Date added Peer reviewed? Patient-facing?
Results article results 01/03/2020 09/06/2020 Yes No

Editorial Notes

09/06/2020: The following changes were made to the trial record:
1. Publication reference added.
2. The total final enrolment was added.