Cold weather incoming! This is just a quick review of carbon monoxide poisoning treatment options, as well as what differentiates cold water immersion from regular drowning.
CPAP may be helpful in creating a tighter seal and therefore increasing the FiO2. A nonrebreather entrains a lot of room air as the patient breathes and provides far from 100% FiO2 as is sometimes taught. The improved alveolar recruitment with CPAP also helps with gas exchange if there is any atelectasis. But CPAP itself does not increase the pressure of oxygen felt at the cellular level.
