Answer :

Final answer:

If a four-year-old child is choking and becomes unresponsive, the Heimlich maneuver and CPR should be performed. First, try the Heimlich maneuver to dislodge the obstructing object. If the maneuver fails, proceed to perform CPR, starting with chest compressions.

Explanation:

If a four-year-old child is choking and becomes unresponsive, you will need to add a step to the usual sequence of CPR. After calling for emergency medical care, you should perform the Heimlich maneuver on the child to try to dislodge the obstructing object. If the Heimlich maneuver fails, you will then need to proceed with CPR, starting with chest compressions. It's important to learn how to perform the Heimlich maneuver and CPR correctly, as it can save lives.

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