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Comparison of hemodynamic response to tracheal intubation with Macintosh and McCoy laryngoscopes.

Haidry MA, Khan FA - J Anaesthesiol Clin Pharmacol (2013)

Bottom Line: This difference between groups was significant (P < 0.0001).The change lasted for a lesser duration in the McCoy group.Hemodynamic changes with use of McCoy laryngoscope were lesser in magnitude and of shorter duration.

View Article: PubMed Central - PubMed

Affiliation: Department of Anesthesia, Aga Khan University, Karachi, Pakistan.

ABSTRACT

Background: Use of McCoy blade laryngoscope avoids the lifting force in the vallecula and theoretically should lead to a lower hemodynamic response related to laryngoscopy and tracheal intubation. The available literature on the topic is conflicting.

Materials and methods: We studied the hemodynamic response to laryngoscopy and tracheal intubation in 60 ASA 1 AND 2 adult patients using either Macintosh or McCoy laryngoscopes. The change in systolic, diastolic, mean arterial pressure, and heart rate (HR) was observed for 10 min post intubation. Arrhythmias and ST changes were also observed.

Results: The maximum change in HR was 18.7% in the Macintosh and 7.7% in the McCoy group, and in systolic arterial pressure was 22.9% in the Macintosh and 10.3% in the McCoy group. This difference between groups was significant (P < 0.0001). The change lasted for a lesser duration in the McCoy group. No arrhythmias or ST changes were observed in either group.

Conclusion: Hemodynamic changes with use of McCoy laryngoscope were lesser in magnitude and of shorter duration.

No MeSH data available.


Related in: MedlinePlus

Comparison of mean systolic blood pressure between Macintosh blade (●…●) and McCoy blade (▲___▲) †indicates significant difference between groups
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Figure 2: Comparison of mean systolic blood pressure between Macintosh blade (●…●) and McCoy blade (▲___▲) †indicates significant difference between groups

Mentions: Both groups showed a significant rise in systolic BP [SAP], compared to baseline immediately after laryngoscopy and at 1 and 2 min following laryngoscopy in the Macintosh group. A significant drop was observed in the Macintosh group at 5 and 10 min after intubation compared to 3, 4, 5, and 10 min in the McCoy group. On intergroup comparison, significantly lower values were seen immediately after and at 1, 2, and 3 min following tracheal intubation in the McCoy group. The maximum change observed in SAP in the Macintosh group was 22.9% compared to 10.3% in the McCoy group (P = 0.0001) [Figure 2].


Comparison of hemodynamic response to tracheal intubation with Macintosh and McCoy laryngoscopes.

Haidry MA, Khan FA - J Anaesthesiol Clin Pharmacol (2013)

Comparison of mean systolic blood pressure between Macintosh blade (●…●) and McCoy blade (▲___▲) †indicates significant difference between groups
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3713667&req=5

Figure 2: Comparison of mean systolic blood pressure between Macintosh blade (●…●) and McCoy blade (▲___▲) †indicates significant difference between groups
Mentions: Both groups showed a significant rise in systolic BP [SAP], compared to baseline immediately after laryngoscopy and at 1 and 2 min following laryngoscopy in the Macintosh group. A significant drop was observed in the Macintosh group at 5 and 10 min after intubation compared to 3, 4, 5, and 10 min in the McCoy group. On intergroup comparison, significantly lower values were seen immediately after and at 1, 2, and 3 min following tracheal intubation in the McCoy group. The maximum change observed in SAP in the Macintosh group was 22.9% compared to 10.3% in the McCoy group (P = 0.0001) [Figure 2].

Bottom Line: This difference between groups was significant (P < 0.0001).The change lasted for a lesser duration in the McCoy group.Hemodynamic changes with use of McCoy laryngoscope were lesser in magnitude and of shorter duration.

View Article: PubMed Central - PubMed

Affiliation: Department of Anesthesia, Aga Khan University, Karachi, Pakistan.

ABSTRACT

Background: Use of McCoy blade laryngoscope avoids the lifting force in the vallecula and theoretically should lead to a lower hemodynamic response related to laryngoscopy and tracheal intubation. The available literature on the topic is conflicting.

Materials and methods: We studied the hemodynamic response to laryngoscopy and tracheal intubation in 60 ASA 1 AND 2 adult patients using either Macintosh or McCoy laryngoscopes. The change in systolic, diastolic, mean arterial pressure, and heart rate (HR) was observed for 10 min post intubation. Arrhythmias and ST changes were also observed.

Results: The maximum change in HR was 18.7% in the Macintosh and 7.7% in the McCoy group, and in systolic arterial pressure was 22.9% in the Macintosh and 10.3% in the McCoy group. This difference between groups was significant (P < 0.0001). The change lasted for a lesser duration in the McCoy group. No arrhythmias or ST changes were observed in either group.

Conclusion: Hemodynamic changes with use of McCoy laryngoscope were lesser in magnitude and of shorter duration.

No MeSH data available.


Related in: MedlinePlus