Comparative Study of Cardiovascular Responses Due To Endotracheal Tube Extubation Versus Lma Removal, In Normotensive Patients

Comparative Study of Cardiovascular Responses Due To Endotracheal Tube Extubation Versus Lma Removal

Abstract

Background and Objectives: Laryngeal, tracheal and bronchial receptors are stimulated during laryngoscopy, intubation and extubation. The reflex increases in sympathoadrenergic activity caused by these manipulations leads to increase in heart rate and blood pressure. The aim of the present study was to evaluate and compare the hemodynamic changes during removal of LMA versus Endotracheal tube extubation. Methods: The study was conducted in 60 patients of both gender, aged 20-60 years, of ASA grade I and II physical status, undergoing elective surgery under general anaesthesia. The patients were randomly divided into two groups by sealed envelope method containing 30 patients each. Group 1 - for LMA insertion and Group 2 - for Endotrachel tube insertion. Pre-induction values of heart rate and blood pressure was recorded as baseline values. Subsequent measurement were recorded immediately before extubation or removal of LMA and at 1,2,3,5,10 and 15 minutes after extubation or removal of LMA. Results: Intergroup comparison showed more increase of heart rate,systolic and diastolic blood pressure in group 2 than in group 1. Conclusion: The conclusion drawn from this study is that the hemodynamic responses produced by LMA removal are lesser and short lived as compared to Endotracheal tube extubation.