Final answer:
Abdominal thrusts for choking adults and children should be directed inward and upward. In infants, the procedure is different, involving back slaps and chest thrusts. Quick, forceful thrusts between the navel and ribcage can dislodge the object.
Step-by-step explanation:
When performing abdominal thrusts, also known as the Heimlich maneuver, on choking adults and children, the thrusts should be directed in an inward and upward direction. This is done to increase the pressure in the chest and force the object blocking the airway out. It's essential to place your hands in the correct position just above the navel and below the ribcage before delivering quick and forceful thrusts. This technique is different for infants, where back slaps and chest thrusts are advised instead of abdominal thrusts.
Recognizing the signs of choking is also critical. Look for clues such as the inability to speak or breathe, gasping, wheezing, or the person clutching at their throat. If a person's face starts to turn blue, it indicates a lack of oxygen. Prompt action is vital to prevent unconsciousness or more severe outcomes.