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Related Experiment Video

Updated: Feb 1, 2026

Author Spotlight: Advancing Awake Nasotracheal Intubation with Flexible Video Rhino-Laryngoscopes
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Haemodynamic Response to Four Different Laryngoscopes.

Demet Altun1, Achmet Ali1, Emre Çamcı1

  • 1Department of Anaesthesiology and Reanimation, İstanbul University İstanbul School of Medicine, İstanbul, Turkey.

Turkish Journal of Anaesthesiology and Reanimation
|December 4, 2018
PubMed
Summary

The McGrath video-laryngoscope (MG) resulted in less hemodynamic stimulation and a shorter intubation time compared to other laryngoscopes. This suggests the MG laryngoscope is beneficial for reducing cardiovascular stress and sore throat incidence during tracheal intubation.

Keywords:
Haemodynamic responselaryngoscopetracheal intubation

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Area of Science:

  • Anesthesiology
  • Critical Care Medicine
  • Airway Management

Background:

  • Tracheal intubation is a common procedure with potential hemodynamic consequences.
  • Various laryngoscopes exist, each with potential differences in patient outcomes.
  • Evaluating laryngoscope impact on hemodynamic stability is crucial for patient safety.

Purpose of the Study:

  • To compare the hemodynamic responses to tracheal intubation using four different laryngoscopes: the classic laryngoscope (CL), McCoy (MC), C-Mac video-laryngoscope (CM), and McGrath video-laryngoscope (MG).
  • To assess secondary outcomes including intubation time, attempts, complications, and patient-reported sore throat.

Main Methods:

  • A prospective randomized study involving 160 patients with normal airways.
  • Hemodynamic measurements (heart rate and systolic blood pressure) were recorded immediately post-intubation and for 5 minutes.
  • Secondary outcomes such as intubation time, glottic view, and traumatic complications were documented.

Main Results:

  • The McGrath video-laryngoscope (MG) group showed significantly less fluctuation in heart rate and systolic blood pressure.
  • Intubation time was significantly shorter with the MG compared to other laryngoscopes.
  • Fewer instances of moderate to severe sore throat were reported in the MG and C-Mac video-laryngoscope (CM) groups.

Conclusions:

  • The McGrath video-laryngoscope (MG) provides less hemodynamic stimulation compared to the classic laryngoscope (CL), McCoy (MC), and C-Mac video-laryngoscope (CM).
  • Tracheal intubation with the MG laryngoscope is advantageous for preventing cardiovascular stress responses.
  • The MG laryngoscope offers benefits of short intubation time and reduced incidence of sore throat.