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Nasotracheal Intubation Using the Airtraq Versus Macintosh Laryngoscope: A Manikin Study
Yoshihiro HirabayashiMD and
Norimasa SeoMD
Article Category: Research Article
Volume/Issue: Volume 55: Issue 3
Online Publication Date: Jan 01, 2008
DOI: 10.2344/0003-3006-55.3.78
Page Range: 78 – 81

. Miyazawa , M. Kobayashi , T. Yorozu , Y. Toyoda , and H. Morisaki . Nasal intubation with Bullard laryngoscope: a useful approach for difficult airways. Anesth Analg 1994 . 79 : 132 – 135 . 7 Xue , F. , G. Zhang , J. Liu , et al . A clinical assessment of the Glidescope videolaryngoscope in nasotracheal intubation with general anesthesia. J Clin Anesth 2006 . 8 : 611 – 615 . 8 Hirabayashi , Y

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Figure 1; Lateral view of the Airtraq laryngoscope. A close proximity view of the vocal cords is transmitted to a viewfinder at the top of the scope through a conventional optical system. The device includes a battery-powered light source and an anti-fogging system.
Yoshihiro Hirabayashi and
Norimasa Seo
Figure 1
Figure 1

Lateral view of the Airtraq laryngoscope. A close proximity view of the vocal cords is transmitted to a viewfinder at the top of the scope through a conventional optical system. The device includes a battery-powered light source and an anti-fogging system.


Yoshihiro Hirabayashi and
Norimasa Seo
Figure 2
Figure 2

The image of the glottis in the AirSim manikin. The device is passed into the mouth over the tongue, and the tip of the scope is placed in the vallecula.


Yoshihiro Hirabayashi and
Norimasa Seo
Figure 3
Figure 3

Lateral radiographs of the manikin taken during nasotracheal intubation. ETT indicates tip of an endotracheal tube; M, tip of the Macintosh blade; A, tip of the Airtraq; and *, vocal cords. (a) The endotracheal tube was nasally advanced in the pharynx before laryngoscopy. (b) Intubation with the Macintosh laryngoscope. The Macintosh laryngoscope significantly elevates the glottis; consequently, the nasally introduced tube slides upward and then downward in sequence. To align the tube tip with the glottic inlet, the Magill forceps is often used. (c) Intubation with the Airtraq. The Airtraq laryngoscope preserves the configuration of the airway in its original position. Pushing the nasally introduced tube allows it to advance smoothly into the glottic inlet.


Shiori SasakiDDS,
Hiroshi HoshijimaDDS, PhD,
Makoto YasudaDDS, PhD, and
Kentaro MizutaDDS, PhD
Article Category: Case Report
Volume/Issue: Volume 70: Issue 1
Online Publication Date: Mar 28, 2023
Page Range: 17 – 19

.  Enomoto Y, Asai T, Arai T, Kamishima K, Okuda Y. Pentax-AWS, a new videolaryngoscope, is more effective than the Macintosh laryngoscope for tracheal intubation in patients with restricted neck movements: a randomized comparative study . Br J Anaesth . 2008 ; 100

Tomoka MatsumuraDDS, PhD,
Chihiro SuzukiDDS,
Kazumasa KubotaDDS, PhD,
Shunsuke MinakuchiDDS, PhD, and
Haruhisa FukayamaDDS, PhD
Article Category: Case Report
Volume/Issue: Volume 65: Issue 4
Online Publication Date: Jan 01, 2018
Page Range: 251 – 254

. Are videolaryngoscopes useful for nasotracheal intubation? J Anesth . 2014 ; 28 : 647 – 649 . 7 Abrons RO, Vansickle RA, Ouanes JP. Seldinger technique for nasal intubation: a case series . J Clin Anesth . 2016 ; 34 : 609 – 611 . 8

Hiroko KanemaruDDS, PhD,
Tatsuru TsurumakiDDS, PhD,
Shigenobu KurataDDS, PhD,
Yutaka TanakaDDS, PhD,
Hiroyuki YoshikawaDDS, PhD,
Yumiko SatoDDS, PhD,
Yuki KodamaDDS,
Akiko SudaDDS, PhD,
Yurie YamadaDDS, PhD, and
Kenji SeoDDS, PhD
Article Category: Brief Report
Volume/Issue: Volume 66: Issue 1
Online Publication Date: Jan 01, 2019
Page Range: 42 – 43

. 2012 ; 22 : 752 – 758 . 3 Sethi D. Airway management in a child with Treacher Collins syndrome using C-MAC videolaryngoscope . Anaesth Crit Care Pain Med . 2016 ; 35 : 67 – 68 . 4 Serocki G, Neumann T, Scharf E

Mark A. SaxenDDS, PhD
Article Category: Research Article
Volume/Issue: Volume 66: Issue 4
Online Publication Date: Jan 01, 2019
Page Range: 235 – 237

achieving full neuromuscular recovery while realizing the risk of impaired regulation of breathing and response to hypoxia may still be present during recovery despite complete neuromuscular blockade reversal. Kim EM, Chung MH, Lee MH, Choi EM, Jun I-J, Y, Yun TH, Ko YK, Kim JH, Jun JH. Is Tube Thermosoftening Helpful for Videolaryngoscope-Guided Nasotracheal Intubation? Anesth Analg . 2019;129:812–818. Thermosoftening of the cuffed endotracheal tube (ETT) and telescoping the ETT into a rubber catheter has been suggested as a method for

Mark A. SaxenDDS, PhD
Article Category: Research Article
Volume/Issue: Volume 65: Issue 3
Online Publication Date: Jan 01, 2018
Page Range: 214 – 216

become an increasingly integral part of office-based anesthesia and surgery soon. Hoshijima H, Mihara T, Maruyama K, et al. McGrath videolaryngoscope versus Macintosh laryngoscope for tracheal intubation: a systematic review and meta-analysis with trial sequential analysis. J Clin Anesth . 2018;46:25–32. The McGrath laryngoscope is a self-contained videolaryngoscope that includes a single-use blade, camera, and light source, negating the need for separate cables, screens, and power units. Several randomized controlled trials have compared

Tsuyoshi HoshiDDS,
Takashi SuzukiMD, PhD,
Masayuki SomeiMD, PhD,
Takehiko IijimaDDS, PhD, and
Yuka KuriharaDDS
Article Category: Case Report
Volume/Issue: Volume 65: Issue 4
Online Publication Date: Jan 01, 2018
Page Range: 259 – 260

under catheter guidance. Finally, the TT was successfully advanced into the glottis using McGill forceps under indirect visualization using a McGrath MAC ® videolaryngoscope. The subsequent surgery and postoperative course were uneventful. DISCUSSION In the presented case, a healthy young man developed unexpected and remarkable sinus tachycardia following a second application of topical epinephrine, but not after the first application, during nasotracheal intubation. Our most likely explanation is that the initial intubation attempt