What is the best way to maintain a seal when you are a single rescuer?

When maintaining a seal as a single rescuer, there are a few key steps to keep in mind in order to ensure a successful rescue:

1. Positioning: Make sure to properly position yourself behind the victim so you can maintain direct contact with their face and maintain a tight seal. Ensure that their head is tilted back slightly and their chin is lifted to open their airway.

2. Hand placement: Use one hand to lift the victim's chin and tilt their head back, and use the other hand to pinch their nose closed. This will help to ensure that air is not escaping from the victim's nose during rescue breaths.

3. Seal: Make sure to create a tight seal over the victim's mouth with your own, ensuring that no air escapes during rescue breaths. This will help to ensure that the victim receives the full benefit of the breaths you are providing.

4. Breath delivery: Deliver rescue breaths using a steady, consistent breath flow to ensure that the victim's lungs are properly inflated. Watch for chest rise and fall to ensure that the victim is receiving adequate ventilation.

By following these steps and practicing regularly, you can maintain a tight seal and provide effective rescue breaths as a single rescuer. Remember to remain calm and focused during the rescue and seek additional help if needed.