Comparative study of Hemodynamic and Intraocular Pressure changes following insertion of Laryngeal Mask Airway and Endotracheal Tube Insertion at a Tertiary Hospital.

Background: Laryngoscopy and endotracheal intubation is the commonest method of securing a definitive airway for administering anaesthesia. However, it is associated with tachycardia and hypertension and an increase in intraocular pressure. Various pharmacologic and non-pharmacologic methods have been tried to limit the pressure responses and intraocular pressure changes following the insertion of endotracheal tube. One such attempt is the use of laryngeal mask airway, which has been shown to be an effective means of securing a clear airway in fasting patients for elective surgery. Its insertion requires neither the visualization of cords nor the penetration of larynx, making the placement less stimulating than tracheal tube insertion and it may provoke less sympathetic response and catecholamine release Methodology: Sixty patients, of 18-60 years of age, of either sex undergoing elective surgical procedures at Kidwai Memorial Institute of Oncology, Bangalore requiring general anaesthesia were selected randomly. The study was conducted in our institute from December 2019 to February 2021. Patients were randomly divided into 2 groups. In Group 1, appropriate size of LMA was inserted blindly without laryngoscopy using standard technique whereas in Group 2, appropriate size of endotracheal tube was used to intubate trachea under direct laryngoscopy using macintosh laryngoscope. Results: There were no statistical significant changes in hemodynamic parameters and IOP following LMA insertion. Conclusion: There were no statistical significant changes in hemodynamic parameters and IOP following LMA insertion. There was statistically significant rise in hemodynamic parameters and IOP following laryngoscopy and intubation. [ABSTRACT FROM AUTHOR]