![]() This is particularly the case during a rapid sequence induction, when positive pressure ventilation is avoided prior to intubation of the trachea. The purpose of pre-oxygenation is to increase physiological stores of oxygen in order to prolong the time to desaturation during a period of apnoea, such as frequently happens upon induction of anaesthesia. 15 L/min O2 via a non-rebreathing mask for 7 minutes 3 minutes of tidal breathing of 100% O2 with the patient holding the face-maskĮ. 12 tidal breaths over one minute of 100% O2 via a tightly fitting face-maskĭ. 8 vital capacity breaths over one minute of 100% O2 via a tightly fitting face-maskĬ. 10 L/min O2 via Hudson mask for 5 minutesī. Single Best Answer: choose the single most appropriate option as the answer. Pre-oxygenation is best achieved by the following method:Ī.Alveolar partial pressure of oxygen (PAO2) is directly influenced by:.The following reduce the functional residual capacity:.Multiple Choice Questions: for each option, choose true or false. The answers can be found at the end of the article, together with an explanation. ![]() Before continuing, try to answer the following questions.
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