NCT01599312

Forces on Teeth During Videolaryngoscopy

Forces Exerted on Upper and Lower Teeth During Intubation: a Randomized, Cross-over Trial Comparing Indirect Videolaryngoscopy to Direct Videolaryngoscopy.

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 100 (actual)
• Sponsor: Catharina Ziekenhuis Eindhoven · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

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.

Detailed description

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.

Conditions

• Tooth Injuries
• Intubation Complication

Interventions

Type	Name	Description
DEVICE	Forces exerted on teeth during intubation	Anesthesia will be induced in the conventional matter. The classic Macintosh laryngoscope will be placed in the patient's mouth and a tube will be brought into position in front of the glottis. Hereafter, one of the three videolaryngoscopes will be placed in the patient's mouth and the endotracheal tube will be actually passed through the vocal cords. The measurement of forces applied to the teeth will be performed using Flexiforce® sensors.

Timeline

• Start date: 2012-05-01
• Primary completion: 2012-09-01
• Completion: 2012-09-01
• First posted: 2012-05-16
• Last updated: 2015-02-10

Locations

1 site across 1 country: Netherlands