Comparison Of Haemodynamic Changes With Laryngoscopy And Orotracheal Intubation, Using Fibreoptic Laryngoscope With On Screen Monitoring And Direct Laryngoscope –A Clinical Trial

Abstract

Back ground and objectives: Orotarcheal intubation, following direct laryngoscopy is associated with transient increase in blood pressure and heart rate. Various methods have been tried to attenuate these responses as they may precipitate serious complications in those with underlying cardiac diseases. In our study we aim to evaluate haemodynamic responses to direct laryngoscopy and fibreoptic bronchoscopy. Methods: Seventy two patients with ASA grade 1 and 2 and Mallampati Grade 1 and 2 undergoing general anaesthesia requiring tracheal intubation from December 2014 to June 2016 were included for this study. Patients were randomly divided into two groups with 36 in each group either selected for direct laryngoscopy or fibreoptic intubation. Result: Our study showed that there is no significant difference between fibreoptic bronchoscopy and direct laryngoscopy in attenuating haemodynamic responses. However, laryngscopy and orotracheal intubation in both groups caused a significant increase in heart rate, blood pressure and mean arterial pressure. The mean duration of time taken for intubation was much higher in fibreoptic group than in direct laryngoscopy group. Conclusion: This study shows that fibreoptic intubation does not have any special role in attenuating haemodynamic responses in comparison to direct laryngoscopy.