CMAC® Versus Airtraq® and Macintosh Laryngoscope in Difficult Tracheal Intubation.

U

University College Hospital Galway

Status

Terminated

Conditions

Difficult Intubation
Airway
Airway Device

Treatments

Device: Airtraq device
Device: macintosh laryngoscope
Device: C-MAC laryngoscope

Study type

Interventional

Funder types

Other

Identifiers

NCT01031940
CMAC-1

Details and patient eligibility

About

It is essential that anaesthetists successfully perform orotracheal intubation in scenarios in which intubation is potentially more difficult, such as where anatomical characteristics predictive of difficult intubation are present. The CMAC® Laryngoscope is a new intubating device. It is designed to provide a view of the glottis without alignment of the oral, pharyngeal and tracheal axes. The CMAC may be especially effective in situations where intubation of the trachea is potentially difficult. The efficacy of this device in comparison to the traditional Macintosh laryngoscope and other novel laryngoscopes is not known. We aim to compare its performance to that of the Macintosh laryngoscope, the gold standard device, in patients with one or more anatomical characteristics predictive of difficult intubation. The investigators further aim to compare it to the Airtraq® device a device which has been shown to be superior to the Macintosh laryngoscope in previous trials. The investigators primary hypothesis is that, in the hands of experienced anaesthetists, time to intubation would be shorter using the CMAC than using the Macintosh laryngoscope in patients with two or more anatomical characteristics predictive of difficult intubation. The investigators further hypothesize that the Airtraq® will be superior the CMAC® with one or more anatomical characteristics predictive of difficult intubation.

Enrollment

15 patients

Sex

All

Ages

18+ years old

Volunteers

No Healthy Volunteers

Inclusion criteria

  • ASA 1-3 patients undergoing surgical procedures requiring orotracheal intubation.
  • Written informed Consent
  • No relevant drug allergies

Patients with 2 or more of the following predictors of difficult intubation:

  • Mallampatti II - IV
  • Thyromental distance < 6cm
  • Mouth opening < 3.5 cm
  • Cervical spine disease
  • Anteriorly protruding incisors
  • Presence of Caps or Crowns

Exclusion criteria

  • Patients with history of or risk factors for gastric regurgitation
  • Patients unable to consent for the trial

Trial design

Primary purpose

Treatment

Allocation

Randomized

Interventional model

Parallel Assignment

Masking

None (Open label)

15 participants in 3 patient groups

macintosh
Active Comparator group
Treatment:
Device: macintosh laryngoscope
C-MAC
Active Comparator group
Treatment:
Device: C-MAC laryngoscope
Airtraq
Active Comparator group
Treatment:
Device: Airtraq device

Trial contacts and locations

1

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Data sourced from clinicaltrials.gov

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