North Carolina EMT State Practice Exam

What is the most preferred method of artificial ventilation?

1. 1-person BVM

2. Flow restricted device

3. Mouth to mask with oxygen

4. Oxygen powered ventilation device

The correct answer is: Mouth to mask with oxygen

The method of artificial ventilation considered most preferred is mouth to mask with oxygen. This technique effectively provides a clear airway and delivers supplemental oxygen directly to the patient, enhancing the efficiency of ventilation. Using a mask paired with a one-way valve allows the rescuer to create a seal around the patient's mouth while minimizing the risk of expiratory gases escaping, thereby improving the overall effectiveness of ventilations. Mouth to mask ventilation is particularly advantageous in situations where respiratory support is needed quickly but may not warrant more complex equipment. It can be used by a single rescuer, making it a practical choice during emergencies when time is of the essence. Moreover, the provision of supplemental oxygen during this process can significantly improve oxygenation, which is critical in respiratory distress or failure. The other options, while viable ventilatory methods, do not offer the same balance of simplicity and effectiveness. For example, the one-person BVM can be challenging to use properly without assistance, which may hinder its effectiveness in a time-sensitive scenario. Flow-restricted devices typically require more training and can be cumbersome in certain settings. Oxygen powered ventilation devices are useful but can also pose risks if not used correctly, particularly in terms of potential barotrauma to the lungs. Thus, the preference for mouth to