“…The introduction of new tools in clinical practice for intubation is necessary in order to overcome the difficulties that may appear during an intubation of patients with difficult airways (VAD) (Ciccozzi et al, 2013, Kilicaslan et al, 2014, Cunha Andrade et al, 2018. Among the situations that require more caution from the professional and that can characterize a difficult intubation, are the removal distance (<12.5cm), hyoid distance (<6cm), Mallampati classification (3 or 4), reduced mandibular protrusion, neck circumference (> 40cm) , obstructive sleep apnea syndrome, macroglossia, mandibular or dental abnormalities, history of snoring, restricted mouth opening (interincisive distance), among others (Erdivanli et al, 2018, Cunha Andrade et al, 2018, Selvi et al, 2020, Apfelbaum et al, 2013, Detsky et al, 2019, Nausheen et al, 2019.…”