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Completed

NCT Number: NCT01516164

A Comparison of the Ease of Tracheal Intubation Using a McGrath MAC Laryngoscope and a Standard MacIntosh Laryngoscope

Videolaryngoscopes offer the potential to make tracheal intubation easier for the anaesthetist and less traumatic for the patient. This study aims to compare the intubation difficulty scores (a validated scoring system for ease of intubation) using the McGrath MAC as a videolaryngoscope, the McGrath MAC only as a direct laryngoscope (without video screen) and the MacIntosh laryngoscopes.

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Key information

Conditions

Tracheal Intubation

Age range

16 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

NHS Tayside

Tayside, United Kingdom

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Elective procedure requiring oral tracheal tube intubation
  • Over 16 years of age
  • Airway assessment suggests to the anaesthetist that a standard MacIntosh laryngoscope approach to intubation would be appropriate.

Exclusion criteria

  • Emergency procedure
  • Less than 16 years of age
  • Unable to consent
  • Requiring Rapid Sequence Induction (a specialised anaesthetic induction technique)
  • Predicted difficult intubation
  • Not suitable for the standardised induction technique

Treatment and study plan

Laryngoscopy

Device

After establishing full monitoring, inducing general anaesthesia and ensuring paralysis laryngoscopy is performed and the patient's trachea intubated.

Primary outcomes

  1. Intubation Difficulty Score

    Time frame: 5 minutes

    The Intubation Difficulty Scale (IDS) is a numerical score based on seven parameters. The scoring of each parameter represents a divergence from an 'ideal' condition and the total score represents a sum divergence from a zero difficulty ideal intubation. The seven parameters are number of supplementary attempts, number of supplementary operators, number and type of alternative techniques used, laryngoscopic grade, subjective lifting force, the use of external laryngeal manipulation and mobility or position of the vocal cords.

Secondary outcomes

  1. Time to intubation

    Time frame: 5 minutes

  2. Number and types of alternative techniques used

    Time frame: 5 minutes

  3. Perception of force used

    Time frame: 5 minutes

  4. Complications

    Time frame: 5 minutes

  5. Ease of intubation

    Time frame: 5 minutes

  6. Failure to intubate

    Time frame: 5 minutes

Sponsors and collaborators

Lead sponsor

NHS Tayside

Other Gov

Registry information

Important dates

Study start
2012
Primary completion
2014
Study completion
2014
First posted
Jan 24, 2012
Registry last updated
Oct 6, 2014

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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