Randomised trial estimating length of endotracheal tube insertion using gestational age or nasal-tragus length in newborns: a study protocol

Author:

Razak AbdulORCID,Faden Maheer,Alghamdi Jameel,Binmanee Abdulaziz,Alonazi Abdullah Hawash,Hamdoun Anas,Almugaiteeb Saud,Patel Waseemoddin,Katar Hamdi,Lora Fabian,Alismail AbdullahORCID,Lavery Adrian,Hamama Ibrahim,Alsaleem Noura,Alshaikh Manal,Alrasheed Lama,Aldibasi Omar

Abstract

IntroductionEndotracheal tube (ETT) insertion depth estimation is important for optimal placement of ETT tip and balanced ventilation of the lungs. Various methods are available to determine the ETT insertion depth. The Neonatal Resuscitation Programme recommends the gestational age and nasal-tragus length (NTL) methods for estimating ETT insertion depth during cardiopulmonary resuscitation. However, the prospective data comparing these two methods is lacking.Methods and analysisThis is an open-label multi-centre randomised controlled trial, where gestational age and NTL methods will be used to determine the initial ETT insertion depth in term and preterm infants that are less than 28 days old, requiring oral intubation in the delivery room or neonatal intensive care unit (NICU).Sites and sample sizeThe trial is aimed to recruit 454 infants over 3 years across tertiary level NICUs.OutcomesThe primary outcome includes an optimally positioned ETT, defined as an ETT tip between the upper border of the first thoracic vertebra and the lower border of the second thoracic vertebra. The outcome is assessed by a paediatric radiologist, who will be masked to the group assignment. Secondary outcomes are malpositioned ETT tips, pneumothorax, ETT repositioning, chronic lung disease, invasive ventilation days, and death.AnalysisData will be analysed using the intention-to-treat principle. The primary and categorical secondary outcomes will be compared using the χ2 test. Adjusted risk ratios of outcomes will be calculated along with 95% CIs through multivariable logistic regression analysis, including covariates deemed biologically to influence the outcomes.Ethics and disseminationThe study has been approved by the PNU Research Ethics Board (20-0148) and the respective ethical review boards of the participating centres. The results will be disseminated through conference meetings, social media platforms, and publications in scientific journals.Trial registration numberNCT04393337.

Funder

Princess Nora Bint Abdulrahman University

Publisher

BMJ

Subject

General Medicine

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