What is the first step in performing mouth-to-nose artificial respiration?

The first step in performing mouth-to-nose artificial respiration is to clear the mouth with your finger. This action is crucial because it ensures that the victim's airway is unobstructed, allowing for effective ventilation. If there are any obstructions, such as food or other debris, attempting to give breaths through the nose without first clearing the mouth could result in ineffective breathing efforts or further complications.

After clearing the mouth, the responder can ensure that air flows properly into the lungs through the nose. This step sets the foundation for the subsequent actions needed to provide effective rescue breaths. Proper handling of the airway is fundamental in emergency situations to maximize the chances of reviving the victim.