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. 2012 Feb;62(2):119-24.
doi: 10.4097/kjae.2012.62.2.119. Epub 2012 Feb 20.

Macintosh laryngoscope vs. Pentax-AWS video laryngoscope: comparison of efficacy and cardiovascular responses to tracheal intubation in major burn patients

Chul-Ho Woo  1 , Sung Hoon Kim, Jae-Young Park, Ji Young Bae, In-Suk Kwak, Sung Ha Mun, Kwang-Min Kim
Affiliations

Macintosh laryngoscope vs. Pentax-AWS video laryngoscope: comparison of efficacy and cardiovascular responses to tracheal intubation in major burn patients

Chul-Ho Woo et al. Korean J Anesthesiol. 2012 Feb.

Abstract

Background: Patients with major burns accompanied with airway edema need more attention for airway management. Although the Pentax-AWS has an advantage in managing endotracheal intubation more easily, its usefulness cannot be assured if it does not maintain hemodynamic stability in burn patients. The aim of this study was to compare cardiovascular responses and general efficacy of the Pentax-AWS and Macintosh laryngoscopes in burn patients.

Methods: American Society of Anesthesiologists physical status 2 or 3 adult patients with major burn injury were randomly assigned to group P (AWS, n = 50) or group M (Macintosh, n = 50). Fifty-nine patients assigned to the Macintosh group and no patient to AWS group were excluded because of failure to first intubation. Hemodynamic data at baseline, just before and after intubation as well as 3, 5 and 10 minutes after intubation and grade of sore throat were recorded in two groups. Intubation time, success rate of intubation, number of intubation attempts and the percentage of glottic opening (POGO) scores were also observed and analyzed in all patients.

Results: A statistically significant increase in heart rate just after laryngoscopy was seen in group M. The success rate of the first attempt in group P (100%) was greater than with the group M (46%). POGO scores were higher in group P (97 ± 4%) than in group M (48 ± 29%)

Conclusions: The use of Pentax-AWS offers a reduced degree of heart rate elevation compared with the Macintosh laryngoscope and better intubation environments in major burn patients.

Keywords: Burns; Hemodynamics; Intratracheal; Intubation; Laryngoscopes.

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Figures

Fig. 1
Fig. 1
Changes in systolic blood pressure (SBP) (means ± standard deviation). Group P: Pentax-AWS, Group M: Macintosh laryngoscope. Base: before induction value. After: just after intubation value. 3, 5, 10 min: value at 3, 5, 10 minutes after intubation. There were no significant differences between groups. *P < 0.05 compared to baseline.
Fig. 2
Fig. 2
The changes of diastolic blood pressure (DBP) (means ± standard deviation). Group P: Pentax-AWS, Group M: Macintosh laryngoscope. Base: before induction value. After: just after intubation value. 3, 5, 10 min: value at 3, 5, 10 minutes after intubation. There were no significant differences between groups. *P < 0.05 compared to base.
Fig. 3
Fig. 3
Changes in heart rate (HR) (means ± standard deviation). Group P: Pentax-AWS, Group M: Macintosh laryngoscope. Base: before induction value. After: just after intubation value. 3, 5, 10 min: value at 3, 5, 10 minutes after intubation. A statistically significant difference in heart rate between groups was seen just after intubation. *P < 0.05 compared to base. †P < 0.05 compared to group P.
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References

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