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Maneuvers to relieve choking are frequently life saving. Adults most often choke on a piece of food, such as a large piece of meat. Infants do not have well-developed swallowing reflexes and may choke if given small, rounded foods such as peanuts or hard candies. Children, especially toddlers, also may choke on balloons, toys, coins, other inedible objects that they place in their mouth, and foods (particularly rounded, smooth foods, such as hot dogs, round candies, nuts, and grapes).
Coughing may be the first symptom and is often so severe that the person cannot ask for help. The person may grasp both hands near the throat. Breathing and speaking can become weak or stop. There can be high-pitched or gasping sounds, and the person can turn blue, have a seizure, or faint.
Treatment for a person who is choking takes precedence over calling for emergency medical care.
Performing Abdominal Thrusts
A strong cough often expels the object from the airway. A person with a strong cough should be allowed to continue coughing. A person who can speak normally usually still has a strong cough. If a person who is choking cannot cough, the rescuer should deliver abdominal thrusts (Heimlich maneuver), which increase pressure in the abdomen and chest and help expel the object.
If the person is conscious, the rescuer approaches from behind, using the arms to encircle the person's abdomen. The rescuer forms a fist. The thumb should be inside the fist, and the thumb side of the fist should point inward. The rescuer places the fist between the breastbone and the navel, toward the person. The other hand is placed firmly over the fisted hand. The hands are then thrust inward and upward forcefully, 5 times in succession. Less force should be used if the person is a child. Series of thrusts should be repeated until the object is expelled. If the person loses consciousness, the rescuer should stop the thrusts.
If the person loses consciousness, the rescuer looks in the mouth and throat for any visible objects that may be blocking the airway and, if any are present, removes them. If the person does not start breathing, the tongue may be blocking the airway. The rescuer then tilts the person's head back slightly and lifts the chin, moving the tongue and thus opening the airway. If the person is not breathing, mouth-to-mouth respiration can be given. Failure of the chest to rise indicates that the airway is still blocked (see see Cardiac Arrest : First-Aid Treatment).
Clearing a Blocked Airway in an Infant
For an infant, abdominal thrusts are not done. Instead, the infant is turned face down, the chest resting on the rescuer's forearm, with the head lower than the body. The rescuer then strikes the infant between the shoulder blades 5 times using the heel of the hand (back blows). The strikes should be firm but not hard enough to cause injury. The rescuer then checks the mouth, removing any visible objects. If the airway remains blocked, the rescuer turns the infant face up with the head down, and using the second and third fingers, thrusts inward and upward on the infant's breastbone 5 times (chest thrusts). The rescuer then checks the mouth again for any visible objects.
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