What is a technique that can be used for ventilation?

Mouth-to-mask ventilations are an effective technique used for delivering breaths to a patient who is not breathing adequately or at all. This method involves placing a barrier device, known as a mask, over the patient's mouth and nose while providing positive pressure ventilation through the mask. It creates a seal that allows the rescuer to deliver oxygen directly into the patient's lungs while minimizing the risk of disease transmission.

This technique is particularly favored in emergency situations as it allows one rescuer to ventilate the patient effectively while maintaining a clear airway. Additionally, it reduces the possibility of the rescuer coming into direct contact with the patient's bodily fluids. Proper performance of mouth-to-mask ventilations is essential for ensuring adequate oxygenation, especially when working alongside chest compressions in cardiopulmonary resuscitation (CPR).

The other options listed do not serve as effective techniques for ventilation. Auditory breathing techniques and vocal breathing instructions do not provide the necessary physical means to deliver breath assistance. Physical chest compressions focus solely on maintaining circulation rather than ventilation. In emergency care, ensuring proper ventilation is critical, making mouth-to-mask ventilations an essential skill for healthcare providers.