When you give CPR if the air does not go in what should do before giving second breath?

If air does not go in during CPR, before giving the second breath, the following should be done:

1. Reposition the Head: Gently tilt the person's head back slightly more to ensure the airway is open and unobstructed.

2. Check for Obstruction: Inspect the person's mouth to see if there is any foreign object blocking the airway. If you see something, try to remove it carefully with your finger.

3. Give a Jaw Thrust: Performing a jaw thrust can help open the airway further and improve airflow. To do this place your thumbs on the person's cheekbones and your fingers near the corner of their mouth, then gently thrust their jaw forward.

4. Re-attempt the Breath: After repositioning the head, checking for obstructions, and performing the jaw thrust, once again attempt to give a rescue breath. If you are still unable to get air in, continue to the next steps:

a. Call for Help: If you are alone, call emergency services or use an AED if available.

b. Continue CPR: Perform chest compressions and rescue breaths at the recommended ratio until professional medical help arrives.

It's important to seek medical attention immediately if the person is not breathing or if you are encountering difficulties with CPR.