The most frequently used method of artificial ventilations in the prehospital setting, providing about 15 L/min of almost 100% oxygen and reducing biohazard risk, is which device?

• A. Continuous Positive Airway Pressure
• B. Bag Valve Mask
• C. Nasal Cannula
• D. Noninvasive Positive Pressure Ventilation

Answer: (B)

Bag-valve-mask ventilation is the go-to method for manual ventilation in the field. It combines a self-inflating bag, a one-way valve, and a mask, usually with an oxygen reservoir. When attached to an oxygen source delivering about 15 L/min, it can provide nearly 100% oxygen with each breath, which is why it’s so effective for rapidly ventilating an ill or apneic patient. The setup also reduces biohazard exposure because it creates a largely closed system with one-way valves, protecting you from direct contact with the patient’s secretions.

This device is portable, easy to deploy, and does not require patient cooperation, making it the most frequently used option for artificial ventilation in prehospital care. By contrast, nasal cannulas deliver low oxygen flow and do not ventilate; noninvasive ventilation and CPAP provide positive pressure support to patients who are breathing on their own and are not as universally applicable in the prehospital setting.