There are many signs, this may help you with your answer https://www.drugabuse.gov/publications/principles-adolescent-substance-use-disorder-treatment-resear...
Nothing can speed the rate
Answer: When you are doing CPR if you want it done properly you can’t stop and if you have to do CPR the person obviously isn’t breathing so emergency services can be on the way while you are doing CPR.
Explanation:
The nasal cannula refers to the "mask" or nasal tubes used to provide supplemental Oxygen to a patient.