International Journal of Medical and Pharmaceutical Research
2023, Volume-4, Issue-3 doi: 10.5281/zenodo.8007292
Original Article
Intraocular Pressure Changes Following Laryngoscopy and Tracheal Inubation with Macintosh Laryngoscope and Videolaryngoscope (King Vision) In Non-Ophthalmic Surgeries: A Randomized Study
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Published
June 5, 2023
Abstract
Background and Aims: Laryngoscopy for tracheal intubation produces a hemodynamic stress response like changes in heart rate and blood pressure, intracranial pressure, intra ocular pressure (IOP). Many pharmacological and non-pharmacological methods have been employed to limit these pressor responses. We hypothesize that as lower lifting forces are required to visualize the glottis while using videolaryngoscopes, hence they should have a beneficial influence on hemodynamics and in turn IOP. Methods: After taking written and informed consent, the patients were allocated by computer generated randomization in 2 groups of 40 patients each. Grp VL- patients were intubated using Kings Vision videolaryngoscope Grp DL – patients were intubated using Macintosh laryngoscope. Heart rate, blood pressure and IOP were recorded just before laryngoscopy,(either by Macintosh or Kings Vision videolaryngoscope) and 1 , 3 and 5 minutes after intubation, by independent anaesthesiologists Results: There was a significant difference in IOP, both in left and right eye from the baseline in direct laryngoscopy group at 1 3 and 5 minutes. No significant difference in IOP from baseline levels was noted in videolaryngoscopy (VL) group .In fact a decrease in IOP was noted at 5 min in VL group in the left eye and no significant change happened in IOP of right eye anytime that we measured (1,3 and 5 min) post intubation. Conclusion: With the use of KVVL, lesser hemodynamic changes and lesser variations in IOP were noted, so the above can be better than DL for use in surgeries where sudden increase in IOP can be deleterious.
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