PROSPECTIVE RANDOMIZED STUDY TO COMPARE HEMODYNAMIC CHANGES DURING McCOY VERSUS MACINTOSH LARYNGOSCOPY

Paayal Chandrashekar; Sampathila Padmanabha

Volume : VI, Issue : X, October - 2016

PROSPECTIVE RANDOMIZED STUDY TO COMPARE HEMODYNAMIC CHANGES DURING McCOY VERSUS MACINTOSH LARYNGOSCOPY

Paayal Chandrashekar, Sampathila Padmanabha

Abstract :

Background: McCoy laryngoscope incorporates a modification of the standard Macintosh blade for better viewing of larynx requiring less force and thus decreasing the pressor response associated with laryngoscopy. The available literature on the subject is limited and controversial. Materials and Methods: We studied the hemodynamic response to laryngoscopy and tracheal intubation in 80 ASA I and II patients aged between 20–50 years using either McCoy (Group A; n=40) or Macintosh (Group B; n= 40) laryngoscopes. Heart rate, systolic and diastolic blood pressure and mean arterial pressure was observed before induction, after induction, during intubation (0 minute) and every minute for the first five minutes and at 10 minutes post intubation. Any episode of arrhythmia or desaturation (SpO2 < 90%) were noted. Results: Following laryngoscopy there was statistically significant rise in HR, SBP, DBP and MAP in both the groups. Increase in hemodynamic variables was more with Macintosh laryngoscope as compared to McCoy which was statistically significant (P <0.001). Arrhythmias or desaturation was not observed in either group. Conclusion: Hemodynamic changes with use of McCoy laryngoscope was lesser as compared to Macintosh laryngoscope.