What action should be taken immediately if someone is choking?

When someone is choking, the most appropriate immediate action is to perform abdominal thrusts, also known as the Heimlich maneuver. This technique is specifically designed to expel an object blocking the airway. By applying a quick inward and upward thrust just above the navel, you create pressure in the abdomen that can help dislodge the obstruction, allowing the person to breathe again.

Other actions may not address the immediate danger of choking effectively. For instance, administering CPR is meant for situations where a person is unresponsive and not breathing, rather than a case of choking where the airway is blocked. Encouraging coughing might only work if the obstruction is partial and the person can still breathe somewhat; however, it may not be sufficient for complete blockages. Providing water is not advisable when someone is choking, as it could further block the airway and create a greater risk of choking. Thus, performing abdominal thrusts is the definitive action needed in an emergency choking scenario.