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Prospective validation of a new airway management algorithm and predictive features of intubation difficulty.

Abstract：

BACKGROUND:Some patients have features that indicate possible difficulty with direct laryngoscopy for tracheal intubation. Prediction of the likely outcome and selection of patients for an enhanced management algorithm would reduce the possible harm from failed intubation attempts. METHODS:Adult elective patients were assessed for seven features associated with difficult direct laryngoscopy, ranked in difficulty from 0 to 3. For a patient with at least one Class 3 feature, or two or more features of class 1 or higher, the enhanced management used a channelled videolaryngoscope Airtraq™ instead of a Macintosh laryngoscope. A long flexible angulated stylet and a flexible fibrescope would be used as the second and third steps. For patients with lesser difficulty scores, a Macintosh laryngoscope was used. Outcomes of enhanced management were analysed. Logistic regression and Random Forest algorithm, using the ranks of the predictive features, were used to predict difficulty during enhanced management. RESULTS:We prospectively studied 16 695 patients. We selected 1501 (9%) for enhanced management, and tracheal intubation was successful in all of them. Of these, 73% were intubated in less than 30 s, and only 4.5% required more than 4 min for intubation. Progression to the second and third steps of enhanced management was predicted by restriction of mouth opening and reduced cervical spine mobility. CONCLUSIONS:An enhanced management algorithm allowed successful tracheal intubation of all patients with anticipated difficult laryngoscopy. The need to combine the use of a stylet and a fibrescope with the Airtraq™ could be predicted with a high degree of certainty.

journal_name

Br J Anaesth

journal_title

British journal of anaesthesia

authors

Cook F,Lobo D,Martin M,Imbert N,Grati H,Daami N,Cherait C,Saïdi NE,Abbay K,Jaubert J,Younsi K,Bensaid S,Ait-Mamar B,Slavov V,Mounier R,Goater P,Bloc S,Catineau J,Abdelhafidh K,Haouache H,Dhonneur G

doi

10.1016/j.bja.2018.09.021

subject

Has Abstract

pub_date

2019-02-01 00:00:00

pages

245-254

issue

eissn

0007-0912

issn

1471-6771

pii

S0007-0912(18)30766-9

journal_volume

122

pub_type

杂志文章

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Prospective validation of a new airway management algorithm and predictive features of intubation difficulty.