Comparison Using a VLS Using GlideRite Stylet Versus TCI Articulating Introducer in Predictive Difficult Intubation

Inclusion criteria

• ✓. History of difficult intubation
• ✓. History of head/neck radiation and prior oral cavity, pharyngeal, or laryngeal surgery
• ✓. Thyromental distance \<6 cm (Defined as distance measured from the thyroid notch to the tip of the jaw with the head extended and the mouth closed)
• ✓. Sternomental distance \< 12 cm (Defined as distance measured as the straight line between the upper border of the manubrium sterni and the bony point of the mentum with the head in full extension and the mouth closed
• ✓. Oropharyngeal view: modified Mallampati scale of 3 or 4
• ✓. Mouth opening \< 4 cm
• ✓. Protruding upper teeth (severe overbite)
• ✓. History of radiation to the neck