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BMC Anesthesiology
Published in: BMC Anesthesiology 1/2017

Open Access 01-12-2017 | Research article

The usefulness of the McGrath MAC laryngoscope in comparison with Airwayscope and Macintosh laryngoscope during routine nasotracheal intubation: a randomaized controlled trial

Authors: Aiji Sato (Boku), Kazuya Sobue, Eisuke Kako, Naoko Tachi, Yoko Okumura, Mayuko Kanazawa, Mayumi Hashimoto, Jun Harada

Published in: BMC Anesthesiology | Issue 1/2017

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Abstract

Background

McGrath MAC video laryngoscope offers excellent laryngosopic views and increases the success rate of orotracheal intubation in some cases. The aim of this study was to determine the usefulness of McGrath MAC for routine nasotracheal intubation by comparing McGrath MAC with Airway scope and Macintosh laryngoscope.

Methods

A total of 60 adult patients with ASA physical status class 1 or 2, aged 20–70 years were enrolled in this study. Patients were scheduled for elective oral surgery under general anesthesia with nasotracheal intubation. Exclusion criteria included lack of consent and expected difficult airway. Patients were randomly allocated to three groups: McGrath MAC (n = 20), Airway scope (n = 20), and Macintosh laryngoscope (n = 20). After induction, nasotracheal intubation was performed by six expert anesthesiologists with more than 6 years of experience.

Results

There were no significant differences in preoperative airway assessment among the three groups. Successful tracheal intubation time was 26.8 ± 5.7 (mean ± standard deviation) s for McGrath MAC, 36.4 ± 11.0 s for Airway scope, and 36.5 ± 8.9 s for Macintosh laryngoscope groups. The time for successful tracheal intubation for McGrath MAC group was significantly shorter than that for Airway scope and Macintosh laryngoscope (p < 0.01). McGrath MAC significantly improved the Cormack Lehane grade for nasotracheal intubation compared with Macintosh laryngoscope (p < 0.05).

Conclusion

McGrath MAC significantly facilitates routine nasotracheal intubation compared with Airwayscope and Macintosh laryngoscope by shortening the tracheal intubation time and improving the Cormack Lehane grade.

Trial registration

UMINCTR Registration number UMIN000023506. Registered 5 Aug 2016.
Literature
1.
Arai T, Suzuki H, Ogawa K, Tomoyuki S, Hashimoto Y, Shimazaki Y, Asai T, Okuda Y. Video-laryngoscope (McGRATH MAC): a clinical assessment of its performance in consecutive 100 patients. Masui. 2014;63:468–71.PubMed
2.
Shippey B, Ray D, McKeown D. Case series. The McGrath videolaryngoscope – An initial clinical evaluation. Can J Anaesth. 2007;54:307–13.CrossRefPubMed
3.
Shippey B, Ray D, McKeown D. Use of the McGrath videolaryngoscope in the management of difficult and failed tracheal intubation. Br J Anaesth. 2008;100:116–9.CrossRefPubMed
4.
Ng l, Hill AL, Williams DL, Lee K, Segal R. Randomaized controlled trial comparing the McGrath videolaryngoscope with the C-MAC videolaryngoscope in intubating adult patients with potential difficault airways. Br J Anaesth. 2012;109:439–43.CrossRefPubMed
5.
Asai T. Pentax-AWS Airway scope: The current status and future–is the Macintosh laryngoscope no longer necessary ? Rinsho Masui. 2010;30:611–8.
6.
Hirooka N, Kumaki F, Izumi T, Takeshima S. Is the airway scope valuable tool for airway management? Jpn J Fam Pract. 2010;15:70–7.
7.
Ono K, Goto T, Nakai D, Ueki S, Takenaka S, Moriya T. Incidence and predictors of difficult nasotracheal intubation with airway scope. J Anesth. 2014;28:650–4.CrossRefPubMedPubMedCentral
8.
Hirabayashi Y, Hoshijima H, Kuratani N, Masaki E. Efficacy of videolaryngoscopes for nasotracheal intubation: a meta-analysis of randomized controlled trials. Masui. 2013;62:1375–9.PubMed
9.
Moon EJ, Kim MK, Kim KS. Pentax- AWS videolaryngoscope for nasotracheal intubation in patients with difficult airways. Korean J Anesthesiol. 2013;64:87–8.CrossRefPubMedPubMedCentral
10.
Suzuki A, Onodera Y, Mitamura SM, Mamiya K, Kunisawa T, Takahata O, Henderson JJ, Iwasaki H. Comparison of the Pentax-AWS scope with the Macintosh laryngoscope for nasotracheal intubation: a randomized, prospective study. J Clin Anesth. 2012;24:561–5.CrossRefPubMed
11.
Kwak HJ, Lee SY, Lee SY, Cho SH, Kim HS, Kim JY. McGrath video laryngoscopy facilitates routine nasotracheal intubation in patients undergoing oral and maxillofacial surgery: a comparison with Macintosh laryngoscopy. J Oral Maxillofac Surg. 2016;74:256–61.CrossRefPubMed
12.
Boku A, Hanamoto H, Hirose Y, Kudo C, Morimoto Y, Sugimura M, Niwa H. Which nostril should be used for nasotracheal intubation: the right or left? A randomized clinical trial. J Clin Anesth. 2014;26:390–4.CrossRefPubMed
13.
Sugiura T, Oouchida E, Hirate H, Arima H, Sasano H, Sobue K. Evaluation of nasotracheal intubation with the airway scope in airway traning manikin. Rinsho Masui. 2014;34:95–100.
14.
Malik MA, Maharaj CH, Harte BH, Laffey JG. Comparison of Macintosh, Truview EVO2, Glidescope, and Airwayscope laryngoscope use in patients with cervical spine immobilization. Br J Anaesth. 2008;101:723–30.CrossRefPubMed
15.
Kim W, Lee Y, Kim C, Lim TH, Oh J, Kang H, Lee S. Comparison of the Pentax Airwayscope, Glidescope video laryngoscope, and Macintosh laryngoscope during chest compression according to bed height. Medicine (Baltimore). 2016;95:e2631.CrossRef
16.
Malik MA, O'Donoghue C, Carney J, Maharaj CH, Harte BH, Laffey JG. Comparison of the Glidescope, the Pentax AWS, and the Truview EVO2 with the Macintosh laryngoscope in experienced anaesthetists: a manikin study. Br J Anaesth. 2009;102:128–34.CrossRefPubMed
17.
Benumof JL, Dagg R, Benumof R. Critical hemoglobin desaturation will occur before return to an unparalyzed state following 1mg/kg intravenous succinylcholine. Anesthesiology. 1997;87:979–82.CrossRefPubMed
Metadata
Title
The usefulness of the McGrath MAC laryngoscope in comparison with Airwayscope and Macintosh laryngoscope during routine nasotracheal intubation: a randomaized controlled trial
Authors
Aiji Sato (Boku)
Kazuya Sobue
Eisuke Kako
Naoko Tachi
Yoko Okumura
Mayuko Kanazawa
Mayumi Hashimoto
Jun Harada
Publication date
01-12-2017
Publisher
BioMed Central
Published in
BMC Anesthesiology / Issue 1/2017
Electronic ISSN: 1471-2253
DOI
https://doi.org/10.1186/s12871-017-0451-y

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Erratum

Erratum to: Lipid emulsion mitigates impaired pulmonary function induced by limb I/R in rats through attenuation of local cellular injury and the subsequent systemic inflammatory response/inflammation