King Vision® and GlideScope® in Difficult Airways

The University of Texas Health Science Center, Houston225 enrolled

Overview

There are several advantages of video laryngoscopy; especially their ability to provide superior glottis visualization, as compared to traditional laryngoscopy.1-3 The purpose of this three arm study was to compare the safety and efficacy of the King Vision® Video Intubation Systems (AMBU-King Systems, Denmark) to the Cobalt GlideScope® (Verathon Medical Inc., USA) in patients with anticipated difficult airways.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

DOUBLE

Enrollment

225

Conditions

Airway Management

Interventions

Video laryngoscopesDEVICE

Patients were randomized into one of the three groups through a computer generated randomization schedule. Patients in group A (N= 75) will be intubated using the GlideScope® AVL, patients in group B (N= 75) will be intubated using the King Vision Channeled VL; patients in group C (N=75) will be intubated using the King Vision Video Laryngoscope with Standard (non-channeled) Blade. Patients will only be tested with one device. All patients will be intubated using a conventional ETT.

Eligibility

Sex: ALLMin age: 18 YearsHealthy volunteers:

Medical Language ↔ Plain English

Inclusion Criteria: * Over 18 years of age * Mallampati III-IV * Neck circumference \> 43cm * Reduced mouth opening (\< 4cm) or 3 Finger breath's (patient's own) * Thyromental distance \< 6cm Exclusion Criteria: * Mallampati I-II * Neck circumference \< 43cm * Documented 'easy' intubation * Previous history of failed intubation and failed bag-mask ventilation * Under 18 years of age * ASA IV * Known unstable cervical spine injury * Presentation for an emergency surgical procedure

Outcomes

Primary Outcomes

Overall Successful Tracheal Intubation for All 3 Video Laryngoscopes - GSAVL, KVChVL and KVNChVL

The overall intubation success rates for all 3 video laryngoscopes - GSAVL, KVChVL and KVNChVL

Time frame: During laryngoscopy and endotracheal tube placement

Secondary Outcomes

First-attempt Successful Intubation for All 3 Video Laryngoscopes - GSAVL, KVChVL and KVNChVL

The overall first-attempt success rates for all 3 video laryngoscopes - GSAVL, KVChVL and KVNChVL

Time frame: During laryngoscopy and endotracheal tube placement

Data from ClinicalTrials.gov

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