Comparison of the effect of optical Air Traq vs. Macintosh Laryngoscope on intra ocular pressure in ophthalmic surgery

Based on the importance of intraocular pressure (IOP) in anesthesia and management of ophthalmic surgery specially in patients with ocular trauma, this research was designed to compare optical air Traq (OAT) with Macintosh (MAC) laryngoscope and their impacts on IOP.
In a randomized clinical trial, 100 patients of ASA class I and II were scheduled for ophthalmic surgery, these patients didn’t have any history of glaucoma and they were divided into two groups of 50 cases. After standard induction of anesthesia with BIS 35-40 the researcher A measured HR, BP and IOP, then the patients were intubated randomly with one of the two devices and after making sure of correct tube site researcher B that was not informed of intubating device measured the same parameters. Data were analyzed with SPSS-16 software and Pvalue < 0.05 was defined as significant. In this study 100 patients were divided into two groups, each comprising of 50 cases, Air Traq group (OAT) M/F = 33/17 and Macintosh group (MAC) M/F = 30 / 20. There was no statistically significant difference in past medical history; ASA Class, age, gender, primary, BP, HR and IOP. Mean IOP in OAT group before intubation was 15.3±6.8 and after that was 16.5±6.5, in MAC group it was 12.9±5.4 before intubation and 18.1±5.7 after intubation. This difference was statistically significant. (p<0.001). Also increases in HR and BP in OAT group were less than MAC group and this difference was statistically significant (P<0.003 sys BP) (P<0.002 DIAS BP) (P<0.002 HR). In the Laryngoscopy with OAT, increases in IOP and hemodynamic changes were less than MAC, and it was found to be useful in ocular trauma