What position should a victim be placed in for effective back blows?

For effective back blows, a victim should be positioned leaning forward. This position allows gravity to assist in the expulsion of any obstruction in the airway when back blows are administered. When the victim leans forward, ideally over the rescuer's arm or a sturdy object, the downward force from the back blows is more effective in dislodging an obstruction, such as food or another object, from the throat.

In contrast, standing upright may not provide the same effectiveness because it can reduce the angle of the blows. Being on their side might also not direct the force appropriately and could complicate the expulsion of an object due to the horizontal position. The supine position, meaning lying flat on the back, is not appropriate for delivering back blows as it prevents effective force application due to the lack of gravity working in the direction needed to dislodge an obstruction. Therefore, leaning forward is the optimal position for administering back blows to address airway obstructions effectively.