Intubation Complication Clinical Trial
Official title:
Forces Exerted on Upper and Lower Teeth During Intubation: a Randomized, Cross-over Trial Comparing Indirect Videolaryngoscopy to Direct Videolaryngoscopy.
In this randomized crossover trial the investigators test whether three different brands of videolaryngoscopes (VLS) exhibit reduced forces on both upper and lower teeth, and compare them with a classic Macintosh laryngoscope blade.
During endotracheal intubation the anesthesiologist uses a laryngoscope blade to distract
the tongue to achieve the best view of the glottis opening, thereby avoiding using the
maxillary incisors as a fulcrum to lever the soft tissues upwards. Using the maxillary
incisors as a fulcrum may otherwise result in dental trauma. It is obvious that contact with
teeth and - even worse - the incidence of accidental dental trauma, is directly related to
the difficulty of the intubation.
Indirect videolaryngoscopy has proven advantageous over direct laryngoscopy using a classic
Macintosh blade, for improved viewing of the glottis, with subsequent more successful
intubations, and a shorter effective airway time both in patients with normal and difficult
airways. Previously, it has been demonstrated that the forces exerted by the
anesthesiologist on the patient's maxillary incisors are reduced when using a VLS, compared
with a classic Macintosh laryngoscope. However, only one type of VLS (V-MAC®, Karl Storz,
Tuttlingen, Germany) was used or only forces applied to upper teeth were being registered.
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Allocation: Randomized, Endpoint Classification: Safety Study, Intervention Model: Crossover Assignment, Masking: Open Label, Primary Purpose: Prevention
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