After checking for responsiveness and calling 911, perform CPR on an adult patient as follows:
1. Give chest compressions at a rate of 100 per minute by placing your hands in the center of the chest and pushing hard and fast. Switch with a bystander every two minutes.
2. Check the airway for obstructions and remove any foreign objects with a finger sweep.
3. Provide two breaths into the patient's mouth by tilting their head back and blowing into their mouth. Use a bag valve mask if available.