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It was good to read Gill et al’s1 report on a carefully conducted randomised trial examining methods to estimate endotracheal tube (ETT) length. Together with their group’s previous trial,2 neither use of the vocal cord guide nor a gestation-based formula showed superiority over the traditional 7-8-9 rule (Tochen’s formula).
In this recent study, under half the infants had their ETT tip in the target radiographic position, despite being intubated in the neonatal unit, rather than immediately after birth. This success rate might reflect the methods used and also indicate that ETT intubation is a complex system requiring many elements to modify practice.
They noted that staff often secured the ETT lower than recommended. The tendency to push the tube in by an extra …
Contributors AKS and STK provided the idea of the topic. AKS designed pro forma of audit and data collection sheet. AG collected the data and reviewed all the X-rays. STK and AKS performed statistical analysis. STK produced the initial draft of the manuscript in conjunction with AKS. All authors read, provided feedback and approved the final manuscript.
Funding This research received no specific grant from any funding agency in the public, commercial or not-for-profit sectors.
Competing interests None declared.
Provenance and peer review Not commissioned; internally peer reviewed.
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