For choking with inability to speak, alternate five back blows and five abdominal thrusts; begin CPR if the person collapses
Ask whether the person is choking and can speak. If they can cough forcefully or speak, let them cough. If unable to speak, alternate 5 back blows and 5 abdominal thrusts until the object comes out or consciousness is lost. Then begin CPR while someone calls emergency services. Use chest thrusts for pregnancy or marked obesity. Never blindly sweep the mouth.
What it takes
Free. Learn placement: a fist above the navel, grasped with the other hand, with quick inward-upward thrusts.
What you may gain
MedlinePlus advises asking whether the person can speak, leaving effective coughing alone, and repeating 5 back blows followed by 5 abdominal thrusts for severe obstruction until relief or unconsciousness. Unconsciousness calls for CPR and an emergency call. Chest thrusts replace abdominal thrusts for pregnant or obese people.
Context & considerations
Do not reach for an unseen object because it can be pushed deeper, or strike someone who is coughing effectively. Household meals are a common setting, making these skills especially useful for family. Original Chinese National Health Commission/Red Cross pages were not found. TODO: verify Chinese official guidance.
Research & references
US National Library of Medicine, MedlinePlus. Choking – adult or child over 1 year. https://medlineplus.gov/ency/article/000047.htm