The comparison of the effect of GlideScope video laryngoscope and direct laryngoscope in hemodynamics and exposure of glottis in obese patients during orotracheal intubation

Objective To observe and compare the clinical application of GlideScope video laryngoscope and direct laryngoscope in obese patients orotracheal intubation.Methods Sixty obese patients,ASA physical status from Ⅰ to Ⅱ,scheduled for elected operation under general anesthesia requiring orotracheal intubation,were randomly divided into observation group(GlideScope videolaryngoscope,n = 30)and control group(direct laryngoscope,n = 30).After a standard intravenous anesthesia induction,operated,noninvasive blood pressures(NBP) and heart rate(HR) were recorded and analyzed before and after anesthetic induction,at glottic exposure,at intubation and 1min after intubation,respectively.Cormark-Lehane grade,orotracheal intubation time,onetime success rate and intubation complications such as pharyngodynia and hoarse voice were also recorded.Results The rise of NBP and HR in control group were significantly higher than those in observation group at glottic exposure.The observation group(above Ⅲ 1 person) achieved better glottic exposure view than contrastive group(above Ⅲ 8 persons)(P0.05).The success rate of orotracheal intubation on the first attempt was 100% in observation group and 93.3% in control group.There were 2 patients had lips injury,3 patients had pharyngodynia in control group,while nobody in observation group.Conclusion Compared with direct laryngoscope,the GlideScope video laryngoscope can not reduce the hemodynamic responses,but improve glottic exposure view,decrease the difficulty of intubation and less complications obviously,during the orotracheal intubation.