Hemodynamic responses to orotracheal intubation with a video laryngoscope in infants: a comparison study

Background: differences in airway anatomy make the potential for technical airway difficulties greater in infants than inteenagers or adults. endotracheal intubation by direct vision using a laryngoscope is frequently associated with an increasein arterial blood pressure and heart rate. in different studies, the time to intubation with a video laryngoscope waslonger than with direct laryngoscopy using macintosh, and this longer duration may be accompanied by more hemodynamicresponses.methods: sixty-four infants who were scheduled for elective surgery requiring general anesthesia with orotrachealintubation were randomly assigned to intubation by direct laryngoscopy using a macintosh size 1 blade or to intubationusing a video laryngoscope. systolic and diastolic blood pressures, heart rate and oxygen saturation were recorded at thefollowing time points: (1) before induction, (2) after induction and before intubation, and (3) i minute and (4) 5 minutesafter intubation.results: no significant differences were found either between the two groups or among the different study periods.the duration for laryngoscopy and intubation with a video laryngoscope was 20.87 (plus-minus) 7.95 seconds (mean (plus-minus) standarddeviation) and that with macintosh was 15.41 (plus-minus) 4.1 seconds (p (less than) 0.01).conclusions: similar hemodynamic responses in both groups suggest that laryngoscopy and intubation with a videolaryngoscope, although with longer duration and therefore resulting in more stimulation, has no significant effect onhemodynamic status and oxygen saturation in infants.