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Chapter 12. Nonvisual Intubation Techniques

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Which of the following conditions does not affect the effectiveness of light-guided intubation using a lightwand?

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A. morbid obesity

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B. foreign body in the upper airway

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C. retropharyngeal abscess

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D. blood and secretion in the oropharynx

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E. large goiter in the anterior neck

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(D) With the exception of blood and secretion, all will affect light-guided intubation using the principle of transillumination.

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Which of the following modifications has not been shown to improve the success rate of the retrograde intubation?

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A. The use of a subcricoid puncture.

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B. The use a guide wire passing through the working channel of a flexible bronchoscope.

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C. The use of a flexible lightwand.

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D. The use of a guide-wire instead of an epidural catheter.

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E. The insertion of the guide wire through the “Murphy's” eye of the endotracheal tube during intubation

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(D) The use of a subcricoid puncture, insertion of the guide wire through the “Murphy's” eye, passing through the working channel of a flexible bronchoscope, and use of a flexible lightwand have all been shown to improve the success rate of the retrograde intubation.

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Which of the following is NOT a characteristic feature of the Eschmann Tracheal Tube Introducer (“gum-elastic bougie”)

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A. The Eschmann Introducer is 60 cm long.

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B. The Eschmann Introducer has a J (coudé) tip (a 35-degree angle bend) at the distal end.

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C. The Eschmann Introducer has a hollow lumen with two side ports.

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D. The Eschmann Introducer is a reusable device.

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E. The Eschmann Introducer consists of a core of tube woven from polyester threads covered with a resin layer.

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(C) While the airway exchange catheter has a hollow lumen with two side ports, the Eschmann Introducer does not.

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