This meta-analysis of 25 studies covering 5,987 patients asked what happens when head and neck cancer reconstruction is managed without an elective tracheostomy, and what elective tracheostomy costs when it is done.
Adverse airway events occurred in 10.3% of patients managed without one. The predictors were consistent and clinically recognisable: floor-of-mouth tumours carried odds of 5.96 against other oral cavity subsites, oropharyngeal tumours 2.60, bilateral neck dissection 6.36, and each step of ASA class 1.51.
The other half is what makes this a decision rather than a rule. Elective tracheostomy was associated with more flap complications, odds ratio 2.15, more unplanned returns to theatre at 1.73, and 5.86 days longer to oral feeding. Those are not minor costs in a patient whose reconstruction and swallowing are the point of the operation.
So neither a routine tracheostomy policy nor a routine avoidance policy is supported. What the data support is stratification: a floor-of-mouth tumour with bilateral neck dissection in a high-ASA patient sits at one end and should probably have an airway secured, while a lower-risk reconstruction should probably not, and the conversation should happen preoperatively with named criteria rather than in recovery.
- Decide tracheostomy preoperatively against named risk factors, not intraoperatively by impression.
- Floor-of-mouth site and bilateral neck dissection carried the highest odds — around six-fold each.
- Set against that: tracheostomy doubled flap complications and delayed oral feeding by nearly six days.
- A 10.3% adverse airway event rate without tracheostomy is the baseline to counsel against.
- Build the criteria as a unit protocol so the decision does not vary by who is operating.
The statistics, in plain English
Odds ratios overstate risk when an outcome is common, and at a 10.3% baseline these are still reasonable approximations of relative risk — but read 5.96 for floor-of-mouth as roughly a six-fold increase in odds, not a statement that 60% of those patients will have an airway event. The absolute figure is the one to counsel with: about one in ten overall. These are pooled observational studies, so the comparison between tracheostomy and no tracheostomy is confounded by indication in the obvious direction — surgeons place tracheostomies in the patients they judge riskiest, which will make tracheostomy look worse than it is on flap and feeding outcomes. That confounding does not explain away the airway predictors, which is the part of this to act on.
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