RESUMO
Objective:To compare the cardiovascular responses to orotracheal intubation with GlideScope videolaryngoscope and with normol laryngoscope in hypertensive patients. Methods:84 hypertensive patients aged 50~70 years,blood pressure controlled,ASA physical status Ⅰ~Ⅱ,scheduled for selected non-heart surgery under general anesthesia reguiring orotracheal intubation were randomly allocated to either GlideScope videolaryngoscope (G,n=42)or normol laryngoscope (N,n=42)group. The following data were recorded and analyzed:glottic exposure time,tracheal intubation time,blood pressure(BP)and heart rate(HR)before and after anesthetic induction,at intubation and thereafter at 1 minute interval for 5 minuts. The rate pressure produc(tRPP)at each measuring time point was calculated. Results:There was no significant difference in the glottic exposure time between the two groups,but the intubation time in G group were significantly longer than that in N group.Compared with base value preinduction,BP,HR,and RPP were significantly decreased in both groups. Glottic exposure and tracheal intubation caused significant increases in BP,HR,and RPP as compared with postinduction values. The index at glottic exposure in group N were higher than that in group G. There was no significant difference in BP,HR,and RPP at other time points between two groups. Conclusion:There was no significant difference in cardiovascular responses to orotracheal intubation between GlideScope videolaryngoscope and normol laryngoscope groups. Under clinical depth of anesthesia,myocardial ischemia did not occur during orotracheal intubation with either laryngoscope in hypertensive patients.