Which methods should be alternated when providing care for a person who is completely choking?

When providing care for a person who is completely choking, the appropriate methods to alternate are abdominal thrusts and back blows. This combination is effective because it targets different mechanics for dislodging an object from the airway.

Abdominal thrusts, often referred to as the Heimlich maneuver, involve using quick inward and upward thrusts to create pressure that can expel a foreign object blocking the airway. This method is powerful and often effective, especially if the person is in a standing or seated position.

Back blows, on the other hand, involve delivering firm strikes to the back between the shoulder blades, which can also help dislodge the obstruction by using gravity and the force of the blows to create a pathway for the air to push the object out.

By alternating these two techniques, responders can maximize their chances of successfully clearing the obstruction while minimizing the risk of injury to the person who is choking. The combination allows for a balanced approach that can adapt to the situation, as either technique may be more effective depending on the specific circumstances of the choking incident.

In contrast, the other options either involve methods not suitable for this scenario or do not provide the necessary dual approach that may be needed to effectively remove the obstruction.