Management of the airway in maxillofacial surgery: part 2

Development and validation of a model to predict the need for emergency front-of-neck airway procedures in trauma patients

The present study aimed to develop and validate a model for predicting the need for emergency front-of neck airway (eFONA) procedures among trauma patients. This was a multicentre retrospective cohort study using data from the Japan Trauma Data Bank between January 2004 and December 2017. Only adult trauma patients were included. The cohort was divided into development and validation cohorts. A simple scoring system was developed to predict the necessity for emergency front-of neck airway procedures in the development cohort using a logistic regression model. The external validity and diagnostic ability of the scoring system was assessed in the validation cohort. In total, 198,182 out of 294,274 patients were included; emergency front-of-neck airway occurred in 467 patients (0.24%) they were divided into development (n = 100,120 with 0.22% undergoing emergency front-of neck airway) and validation (n = 98,062 with 0.25% undergoing emergency front-of neck airway) cohorts. The 'eFONA' prediction scoring system was developed in the development cohort, with a score of +1 for each of the following: Eye opening (no eye opening in response to any stimuli); Fall from height or motor bike; Oral-maxillofacial injury; Neck tracheal injury; and Airway management by paramedics. In the validation cohort, the C-statistic of the scoring system was 0.820. Setting the cut-off value at one for rule-out, the sensitivity and negative likelihood ratios were 0.86 and 0.22, respectively. Setting the cut-off value at two for rule-in, the specificity and positive likelihood ratios were 0.91 and 6.6, respectively. The present scoring system may assist in predicting the need for emergency front-of neck airway procedures among the general trauma population.

Different Solutions for Damaged Nasotracheal Tube during Maxillofacial Surgery: A Case Series

Difficult airway management and intraoperative tube damage are important problems during maxillofacial surgery. Damage occurs frequently during the surgery, and the anesthesiologist must be ready to find a quick and safe solution. Replacing the damaged endotracheal tube involves additional difficulties, and various factors must be evaluated. We present two cases of nasotracheal tube (NTT) damage suffered during maxillofacial surgery. The different intraoperative conditions led us to decide for the replacement of NTT in one case and for conservative action in the other. The purpose of this article is to highlight the difficulties that the anesthesiologist may have in deciding quickly what is the best approach in case the endotracheal tube is damaged during maxillofacial surgery and possibly try to provide a rapid and safe solution for the situation.