RESEARCH REPORT
Comparison of intubation conditions with CMAC Miller
videolaryngoscope and conventional Miller laryngoscope in
lateral position in infants: A prospective randomized trial
Divya Jain
1
| Swati Mehta
1
| Komal Gandhi
1
| Suman Arora
1
| Badal Parikh
1
|
Muneer Abas
2
1
Department of Anesthesia and Intensive
Care, Post Graduate Institute of Medical
Education and Research, Chandigarh, India
2
Department of Pediatric Surgery, Post
Graduate Institute of Medical Education
and Research, Chandigarh, India
Correspondence
Divya Jain, Department of Anesthesia and
Intensive Care, Post Graduate Institute of
Medical Education and Research,
Chandigarh, India.
Email: jaindivya77@rediffmail.com
Section Editor: Britta von Ungern-Sternberg
Summary
Background: Endotracheal intubation in lateral position in infants is a challenge.
This difficulty may be surmounted to some extent by using videolaryngoscopes but
the routine use of these devices as a tool to secure the airway in lateral position
remains unevaluated. Therefore, we conducted a prospective, randomized controlled
trial to compare the intubation conditions achieved with the CMAC videolaryngo-
scope and the Miller Laryngoscope in lateral position in infants. We hypothesized
that CMAC videolaryngoscope would provide a better laryngoscopic view and
reduce the time to intubation compared to the Miller blade.
Methods: Sixty-four children aged <1 year, belonging to American Society of Anes-
thesiologists physical status I-III requiring endotracheal intubation were randomized to
undergo tracheal intubation with either the Miller laryngoscope (n = 32) or the CMAC
videolaryngoscope (n = 32) in left lateral position. Anesthesia was induced with
sevoflurane or thiopentone 5-8 mg/kg IV and atracurium 0.5 mg/kg IV. Total time
taken to intubate was assessed as the primary outcome. Laryngoscopic view, intuba-
tion difficulty score, success rate of tracheal intubation, number of attempts, maneu-
vers used, and any airway complications were recorded as secondary outcomes.
Results: The difference in the mean time to intubate (95% confidence interval)
between the Miller and CMAC group was 6.1 (1.7-10.4) seconds. Furthermore, the
CMAC videolaryngoscope provided a better laryngoscopic view compared to the
conventional Miller blade. In addition, the Intubation Difficulty Scale score was less
in the CMAC videolaryngoscope group.
Conclusion: The CMAC videolaryngoscope decreases the time taken to intubate
and reduces the intubation difficulty when compared to the Miller laryngoscope.
Therefore, the CMAC videolaryngoscope may be more useful device when intubat-
ing the trachea of infants in the lateral position.
KEYWORDS
airway device, infants, lateral position
The trial was registered with Clinical trial registry of India, CTRI/2016/10/007407. The recruitment commenced on 1 November 2016.
Preliminary data for this study would be presented at the 9th National Conference on Pediatric Anesthesia, 17-19 February 2017, Lucknow, India.
Accepted: 6 December 2017
DOI: 10.1111/pan.13316
Pediatric Anesthesia. 2018;1–5. wileyonlinelibrary.com/journal/pan © 2018 John Wiley & Sons Ltd
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