Hemodynamic response to laryngoscopy in ischemic heart disease: Macintosh blade versus GlideScope videolaryngoscope

Objective To determine the hemodynamic response to laryngoscopy/tracheal intubation using GlideScope® videolaryngoscope in patients with ischemic heart diseases. Methods In a randomized clinical trial, 80 adult patient, candidate for coronary artery bypass graft surgery were allocated in two groups for laryngoscopy (MC=Macintosh blade or GS=GlideScope). The hemodynamic response, laryngoscopy time, success rate and complication rate were compared. Results Two patients were excluded because of long postoperative intubation period. Demographic data and airway characteristics were comparable. There was no failed intubation. Laryngoscopy time in MC group was shorter than GS group (14.50±8.30 versus 48.80±47.82 respectively, p=0.001). Stylet was used commonly and more attempts to intubation were done in GS group. Hemodynamic response to orotracheal intubation in 1, 5 and 15 min following intubation was not different between two groups. Conclusions GlideScope® technique did not have any benefit and increased laryngoscopy time, need to use stylet and required more attempts. (Rawal Med J 2009;34: ).