Comparison of Hemodynamic Changes after Intubation with Macintosh and McCoy Laryngoscopes–A Randomised Controlled Trial

  • Muhammad Awais Qarni Combined Military Hospital, Jhelum /National University of Medical Sciences (NUMS) Pakistan
  • Salma Nisar Combined Military Hospital, Kharian /National University of Medical Sciences (NUMS) Pakistan
  • Fawad Alam Combined Military Hospital, Jhelum /National University of Medical Sciences (NUMS) Pakistan
  • Tariq Mehmood 123 Medical Battalion, Gilgit Baltistan, Pakistan
  • Mashooque Ali Army Medical College/National University of Medical Sciences (NUMS) Rawalpindi Pakistan
  • Sarah Nisar Combined Military Hospital, Rawalakot/National University of Medical Sciences (NUMS) Pakistan
Keywords: Endotracheal intubation, Hemodynamics, Laryngoscopes

Abstract

Objective: To compare hemodynamic changes (systolic blood pressure and pulse) after intubation with Macintosh and McCoy laryngoscopes.

Study Design: Randomised control trial (Clinicaltrials.gov: NCT05133375)

Place and Duration of Study: Combined Military Hospital, Jhelum Pakistan, from Apr to Oct 2021.

Methodology: A group of 272 patients reporting to the operation theatre were selected and divided into Group-A and B using the lottery method. All patients had ASA class I and II score and Mallampati score of I and II with no comorbid conditions. Macintosh laryngoscope was used in Group-A, and McCoy laryngoscope was used in Group-B. Before intubation, systolic blood pressure and pulse were measured, as well as 30 seconds, 2 minutes, and 3 minutes following intubation. In addition, a comparison of both groups regarding systolic blood pressure and pulse was made.

Results: The patients in the study had a mean age of 34.93±9.66 years. The increase (20%) in heart rate was significantly higher in the Macintosh-Group 23(16.9%), than in the McCoy-Group 8(4.4%), (p=0.001), and the 20% increase in systolic pressure was also found to be significantly higher in the Macintosh-Group as compared to the McCoy-Group, 26(19.1%) versus 8(6.6%), (p=0.002).

Conclusion: According to our research, using the McCoy blade is a safer mode of intubation in terms of the hemodynamic response.

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Published
2023-04-18
How to Cite
Qarni, M., Nisar, S., Alam, F., Mehmood, T., Ali, M., & Nisar, S. (2023). Comparison of Hemodynamic Changes after Intubation with Macintosh and McCoy Laryngoscopes–A Randomised Controlled Trial. Pakistan Armed Forces Medical Journal, 73(2), 460-63. https://doi.org/10.51253/pafmj.v73i2.7749
Section
Original Articles