The effect of tracheal intubation with the Levitan FPS scope or Macintosh larynogoscope on the arterial pressure and heart rate

ABSTRACT

BACKGROUND: The hemodynamic changes associated with orotracheal intubation may result from direct laryngoscopy and the endotracheal intubation. This study was designed to compare the hemodynamic changes after the endotracheal intubation with either the Levitan FPS scope or Macintosh laryngoscope. METHODS: Sixty patients, aged 20 to 60 years, were randomly allocated into two groups, the Levitan FPS scope group (LF group, n = 30) and the Macintosh group (M group, n = 30). The endotracheal intubation with the Levitan FPS scope or Macintosh blade was performed after inducing anesthesia. The heart rate and arterial pressure were measured before induction, just before intubation and at 1, 3 and 5 min after intubation. RESULTS: There were no significant differences in the arterial pressure and heart rate responses to tracheal intubation with the Levitan FPS scope and the Macintosh laryngoscope. In both groups, the arterial pressures at 1 and 3 and 5 min after intubation were increased significantly compared with the preintubation values, and the heart rates at 1 and 3 min after intubation were increased significantly compared with the preintubation values. CONCLUSIONS: The Levitan FPS scopic intubation does not attenuate the hemodynamic responses associated with endotracheal intubation compared with the Macintosh laryngoscopy.