What is the preferred method for dislodging a severe airway obstruction in adults?

The preferred method for dislodging a severe airway obstruction in adults is the abdominal-thrust maneuver, commonly known as the Heimlich maneuver. This technique involves standing behind the individual and delivering a series of quick, upward thrusts just above the navel. The force generated by these thrusts increases intra-abdominal pressure, which can effectively expel the obstruction from the airway.

The abdominal-thrust maneuver is specifically designed for severe cases of choking, where the airway is completely blocked. It is most effective because it uses the natural mechanics of the respiratory system to create enough force to dislodge the object causing the obstruction. When performed correctly, it can produce significant upward pressure in the thorax, which can clear the airway rapidly and restore breathing.

In contrast, while back blows and chest thrusts may be used in certain situations, they are not as effective for adults with severe airway obstructions. Back blows could be utilized for mild obstruction cases and chest thrusts are generally more appropriate for infants. Finger sweeps are only to be done if a visible object can be seen in the mouth, making them unsuitable for most situations of choking.