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Chapter 12. Nonvisual Intubation Techniques

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

A. morbid obesity

B. foreign body in the upper airway

C. retropharyngeal abscess

D. blood and secretion in the oropharynx

E. large goiter in the anterior neck

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

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

A. The use of a subcricoid puncture.

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

C. The use of a flexible lightwand.

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

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

(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.

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

A. The Eschmann Introducer is 60 cm long.

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

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

D. The Eschmann Introducer is a reusable device.

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

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

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