What is the first action you take in a choking adult who is unable to speak?

When an adult is choking and unable to speak, the first action you should take is to perform the Heimlich maneuver, also known as abdominal thrusts. This technique is specifically designed to create an artificial cough, which can help expel the object blocking the airway. Rapid intervention is crucial in these situations, as a person cannot breathe or speak if their airway is fully obstructed, which can lead to loss of consciousness or even death within minutes.

While placing the person in a sitting position could make them more comfortable, it does not address the immediate threat of airway obstruction. Providing water is also not an appropriate response, as it could exacerbate the choking situation by introducing more fluid into the airway. Calling emergency services is important but serves as a secondary action; the priority must be to clear the obstruction right away while waiting for professional assistance to arrive. Thus, performing the Heimlich maneuver is the correct and most effective immediate action in this emergency scenario.