If we add nasal cannula to nonrebreather face mask or BVM with air leak, we will improve pre-oxygenation phase. This study that just published in Annals of EM enrolled 6o Healthy volunteers ,30 nonrebreather face mask and 30 bag-valve-mask. There will be an argument that Healthy lungs will be different from patients with restrictive or … Continue reading Nasal Cannula and Pre-oxygenation