A Comparative Study On The Effect Of Positive End Expiratory Pressure (Peep) On Pre-Oxygenation In Supine Position And Propped Up Position In Patients Undergoing Ceaserian Section Under General Anaesthesia

Abstract

Introduction:

To increase the amount of oxygen in the lung functional residual capacity, pre-oxygenation is preformed prior to Anaesthesia induction. The application of PEEP during the time of induction helps in preventing atelectasis formation and increase O2. This study was aim to compare the effect of PEEP on pre-oxygenation in supine position and propped up position in patients undergoing caesarean section under general anaesthesia.

Methods

In this prospective randomized controlled double blinded study 60 patients were grouped randomly into 3 groups of each (n=20).Group A (n=20) patients preoxygenated in supine position without PEEP 5 cm H2O and Group B (n=20) patients in supine position with PEEP of 5 cm H2O, Group C (n=20) patients pre-oxygenated in 25˚ headup position with PEEP 5 cm H2O.

Result: In this study, 60 patients were scheduled for elective/emergency caesarean section under general anaesthesia. The demographic variables like age group, BMI range and Type of surgery were found comparable in all study groups. The time required to achieve ETO2 90% was 370.21±47.5, 291.52±45.7 and 188.81±40.2 for Group A, B and C respectively. Haemodynamic changes like ETO2, SpO2, and blood pressure with positions of patient during pre-oxygenation were found comparable in all group. There were no side effects found during the period of study in any patient.

Conclusion:

We concluded that age, BMI range and Type of surgery were found comparable among the 3 study groups and there was no significance difference was reported between these groups and position of patient during pre-oxygenation.