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The Flexible Rhino-Laryngoscope for Awake Nasotracheal Intubation

The Flexible Rhino-Laryngoscope for Awake Nasotracheal Intubation

Published on: August 2, 2024

Head and neck position for direct laryngoscopy.

Mohammad El-Orbany¹, Harvey Woehlck, M Ramez Salem

¹Department of Anesthesiology, Medical College of Wisconsin, 9200 West Wisconsin Ave., Milwaukee, WI 53226, USA. elorbany@mcw.ed

Anesthesia and Analgesia

|May 21, 2011

Summary

This summary is machine-generated.

The sniffing position (SP) remains the optimal head position for direct laryngoscopy (DL), offering the best chance for adequate visualization. Proper patient positioning and adjustments are crucial for successful outcomes.

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Area of Science:

Anesthesiology
Airway Management

Background:

The sniffing position (SP) is traditionally considered optimal for direct laryngoscopy (DL).
Recent evidence has questioned its universal superiority, necessitating a review of existing literature.

Purpose of the Study:

To examine the evidence supporting or refuting the routine use of the SP for DL.
To clarify the definition and application of the SP in various patient populations.

Main Methods:

Systematic review of scarce literature on head positioning for DL.
Analysis of anatomical theories, including the three axes alignment theory.
Evaluation of positioning markers like the external auditory meatus-sternum alignment.

Main Results:

Literature analysis supports the use of the SP as the initial head position for DL.
The "ramped" position is recommended for obese patients to achieve proper SP.
Head elevation requirements vary based on patient anatomy; infants may not need it.

Conclusions:

The SP provides the best initial opportunity for adequate glottic visualization during DL.
Standardized definitions and attention to positioning details are essential for optimal outcomes.
DL is a dynamic procedure requiring adjustments if visualization is inadequate in the SP.