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Effect of jaw thrust and cricoid pressure maneuvers on glottic visualization during GlideScope videolaryngoscopy

Journal of Anesthesia volume 26, pages 362–368 (2012)Cite this article

Abstract

Purpose

During performance of direct laryngoscopy in the difficult-to-visualize airway, several maneuvers have the potential to impact glottic visualization, including jaw thrust and cricoid pressure. The effect of these maneuvers on glottic visualization during videolaryngoscopy has not been studied. We evaluated the effect of jaw thrust and cricoid pressure maneuvers on both visualization of the glottis and the area of glottic opening visible during GlideScope-aided videolaryngoscopy.

Methods

One hundred patients were enrolled in this study. After induction of general anesthesia, videolaryngoscopy was followed by jaw thrust and cricoid pressure maneuvers performed in random order. Laryngeal anatomy was recorded continuously and was saved as digital images following the initial laryngoscopy and after each maneuver. Glottis grade [modified Cormack and Lehane (C&L)] was recorded, as was the total glottic area.

Results

There was improvement in glottis grade when utilizing jaw thrust maneuver in comparison to GlideScope videolaryngoscopy alone (31% improved, 4% worsened; P < 0.001). There was no difference in glottis grade when using the cricoid pressure maneuver in comparison with videolaryngoscopy alone (39% improved, 20% worsened; P = 0.19). Glottic opening area, however, was greater when utilizing the jaw thrust maneuver in comparison with videolaryngoscopy alone (P < 0.001), but smaller when utilizing the cricoid pressure maneuver in comparison with videolaryngoscopy alone (P < 0.001).

Conclusions

The jaw thrust maneuver was superior to videolaryngoscopy alone in improving the modified C&L grade and the visualized glottic area; however, no significant improvement was noted with cricoid pressure. We therefore recommend the use of jaw thrust as a first-line maneuver to aid in glottic visualization and tracheal intubation during GlideScope videolaryngoscopy.

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Conflict of interest

All authors have no conflict of interest.

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Authors and Affiliations

  1. Mayo Clinic College of Medicine, Jacksonville, FL, USA

    David M. Corda, Michael G. Heckman & Sorin J. Brull

  2. South Denver Anesthesiologists, P.C., Englewood, CO, USA

    Kevin T. Riutort

  3. University of Florida College of Medicine, Gainesville, FL, USA

    Alex J. Leone

  4. Mayo Clinic Florida Clinical Research Internship Study Program, Jacksonville, USA

    Mueez K. Qureshi

  5. Mayo Clinic Florida, 4500 San Pablo Road, Jacksonville, FL, 32224, USA

    Sorin J. Brull

Authors
  1. David M. Corda
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  2. Kevin T. Riutort
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  3. Alex J. Leone
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  4. Mueez K. Qureshi
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  5. Michael G. Heckman
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  6. Sorin J. Brull
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Correspondence to Sorin J. Brull.

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Corda, D.M., Riutort, K.T., Leone, A.J. et al. Effect of jaw thrust and cricoid pressure maneuvers on glottic visualization during GlideScope videolaryngoscopy. J Anesth 26, 362–368 (2012). https://doi.org/10.1007/s00540-012-1339-0

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  • DOI: https://doi.org/10.1007/s00540-012-1339-0

Keywords

  • Airway management
  • Cricoid pressure maneuver
  • Jaw thrust maneuver
  • GlideScope videolaryngoscopy