Implementation of a combo videolaryngoscope for intubation in critically ill patients: a before-after comparative study

Airway management in intensive care unit (ICU) patients is challenging. The main objective of this study was to compare the incidence of difficult laryngoscopy and/or difficult intubation between a combo videolaryngoscope and the standard Macintosh laryngoscope in critically ill patients. In the context of the implementation of a quality-improvement process for airway management, we performed a prospective interventional monocenter before-after study which evaluated a new combo videolaryngoscope. The primary outcome was the incidence of difficult laryngoscopy (defined by Cormack grade 3-4) and/or difficult intubation (more than two attempts). The secondary outcomes were the severe life-threatening complications related to intubation in ICU and the rate of difficult intubation in cases of predicted difficult intubation evaluated by a specific score (MACOCHA score a parts per thousand yen3). Two hundred and ten non-selected consecutive intubation procedures were included, 140 in the standard laryngoscope group and 70 in the combo videolaryngoscope group. The incidence of difficult laryngoscopy and/or difficult intubation was 16 % in the laryngoscope group vs. 4 % in the combo videolaryngoscope group (p = 0.01). The severe life-threatening complications related to intubation did not differ between groups (16 vs. 14 %, p = 0.79). Among the 32 patients with a MACOCHA score a parts per thousand yen3, there were significantly more patients with difficult intubation in the standard laryngoscope group in comparison to the combo videolaryngoscope group [12/23 (57 %) vs. 0/9 (0 %), p < 0.01]. The systematic use of a combo videolaryngoscope in ICU was associated with a decreased incidence of difficult laryngoscopy and/or difficult intubation.