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Comparison of the McGRATHTM Video Laryngoscope and Macintosh Laryngoscope for Orotracheal Intubation in a Simulated

Jong-Yeop Kim1, Seonghyeok Park2, Minho Oh2

  • 1Department of Anesthesiology and Pain Medicine, School of Medicine, Ajou University School of Medicine, Suwon 16499, Republic of Korea.

Medicina (Kaunas, Lithuania)
|February 25, 2023
PubMed

Insights

The McGRATH video laryngoscope did not improve intubation success rates or speed compared to the Macintosh laryngoscope in simulated difficult airways. However, it offered a better glottic view during the procedure.

Area of Science:

  • Anesthesiology
  • Airway Management
  • Medical Devices

Background:

  • Difficult intubation poses significant risks to patient morbidity and mortality during anesthesia.
  • Video laryngoscopes, like the McGRATH, are known to enhance laryngeal visualization.
  • Conventional Macintosh laryngoscopes are standard for orotracheal intubation.

Purpose of the Study:

  • To compare the efficacy of the McGRATH video laryngoscope versus the Macintosh laryngoscope for orotracheal intubation.
  • To evaluate device performance in simulated difficult airway scenarios.

Main Methods:

  • A randomized controlled trial involving patients undergoing general anesthesia.
  • Patients were assigned to either the Macintosh laryngoscope (n=50) or McGRATH video laryngoscope (n=45) group.
  • Simulated difficult airway conditions were created using manual in-line stabilization and a soft cervical collar.

Main Results:

  • No significant difference in intubation success rate within 30 seconds between groups (88.0% vs. 80.0%).
  • The McGRATH group demonstrated a significantly better glottic grade (p=0.029).
  • No significant differences in intubation time, oral bleeding, or tooth injury rates were observed.

Conclusions:

  • The McGRATH video laryngoscope did not enhance intubation success rates or reduce intubation time in simulated difficult airways.
  • The McGRATH provided superior glottic visualization compared to the Macintosh laryngoscope.
  • Further research may explore specific patient populations or techniques to leverage improved visualization.
Keywords:
airway managementanesthesiageneralintubationlaryngoscopes

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