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Understanding Anesthesiology - The Global Regional Anesthesia ...

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Pre-oxygenation<br />

<strong>The</strong> purpose of pre-oxygenation is to lessen the risk of hypoxia occurring during the apneic<br />

period after induction. Proper and thorough pre-oxygenation is particularly important in patients<br />

who have a decreased functional residual capacity, such as the obese patient, the pediatric<br />

patient and the obstetric patient.<br />

Pre-oxygenation works through denitrogenation of the functional residual capacity, creating<br />

a “reserve tank” of oxygen that will allow for gas exchange during apnea.<br />

Pre-oxygenation is also key when a difficult intubation and/or difficult bag mask ventilation<br />

is encountered. In these situations, pre-oxygenation ensures maintenance of oxygenation for<br />

a longer period of time while the attempts at securing the airway are made.<br />

Related Glossary Terms<br />

Difficult airway, Functional residual capacity, Hypoxemia, Induction, Oxyhemoglobin dissociation<br />

curve<br />

Index<br />

Find Term<br />

Chapter 3 - General <strong>Anesthesia</strong><br />

Chapter 3 - General <strong>Anesthesia</strong><br />

Chapter 5 - Obstetrical <strong>Anesthesia</strong><br />

Chapter 5 - Pediatric <strong>Anesthesia</strong>

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