Comparison Between Tidal Volume and Vital Capacity Breathing Techniques of Preoxygenation in Patients with Ineffective Facemask Seal

Abstract

Objective: The purpose of this research was to compare the mean hemoglobin oxygen de-saturation time by using tidal volume breathing technique for three minutes and eight vital capacity breathing technique for pre- oxygenation in patients with ineffective face mask seal.
Methods: This study included 60 patients with beard, moustache, large nasal bridge, facial anomalies, nasogastric tube and edentulous patients. They were randomized into 2 groups after achieving documented informed consent. Group-A was preoxygenated with TV breathing technique for three minutes at an oxygen flow of 10 litres per minute. Whereas, Group-B was preoxygenated with eight VC breaths for one minute at an oxygen flow of 10 litres per minute.