Study of the Effect of High Fresh Gas Flows and Pattern of Breathing on Rapid Preoxygenation

Author(s)	Dr. Sasmita Sidu, Dr. Manali Mohan
Country	India
Abstract	Pre-oxygenation is a critical procedure performed before the induction of anaesthesia to increase the body’s oxygen reserves, thereby extending the duration of safe apnoea and reducing the risk of hypoxemia during the induction process[1]. Traditionally, pre-oxygenation involves the administration of 100% oxygen through a tightly fitted mask, usually for a duration of 3 to 5 minutes, or eight vital capacity breaths[2]. However, rapid sequence induction (RSI) necessitates more efficient and faster methods of pre-oxygenation to minimize the risk of aspiration while still achieving adequate oxygenation. Studies have explored various methods to optimize pre-oxygenation. For instance, pre-oxygenation with a facemask combined with nasal prongs has been shown to achieve a faster rise in end-tidal oxygen concentration compared to a facemask alone, although the time to oxygen desaturation remains comparable between the two methods.
Field	Medical / Pharmacy
Published In	Volume 7, Issue 2, March-April 2026
Published On	2026-03-19

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