Comparison of the effects of direct laryngoscopic and fiberoptic oral endotracheal intubation on the intraocular pressures of non-ophthalmic patients: A prospective, randomised, clinical trial

Abstract

Aim: In this prospective, randomised, clinical study; we aimed to compare the effects of endotracheal intubation (ETI) via direct laryngoscope (DLS) and fiberoptic bronchoscope (FOB) on intraocular pressure (IOP) and haemodynamic data of non-ophthalmic patients. Methods: Fifty four adult patients undergoing non-opthalmic surgeries performed in the supin position under general anesthesia requiring orotracheal intubation were included into the study. The patients were randomly and prospectively divided into 2 groups; Group DLS (n=27) and Group FOB (n=27). Mean arterial pressure (MAP), Heart rate (HR), IOP were measured at before induction (basal), post-induction and 1st, 2nd, 3rd and 5th minutes of intubation. Results: There was no statistically significant difference in distirubiton of patient characteristics. Duration of intubation was significantly longer in Group FOB (p<0.001). There was no statistically significant difference in MAP and HR when groups compared each other. Statistically significant increase was found in IOP at 1st minute of intubation in Group DLS when compared with Group FOB (p<0.001). No significant difference was found in terms of IOP in other time periods. Conclusions: We thought that endotracheal intubation by FOB could be more useful with respect to endotracheal intubation by DLS in patients with high IOP due to significantly less rise caused in IOP when performed by experienced anesthesiologists.