choking

Choking occurs when breathing is impeded by a constricted or obstructed throat or windpipe.
In some cases the air flow is completely blocked, in other cases some amount of air can pass to the lungs. Insufficient oxygen being delivered to the body will result in oxygen deprivation. Although oxygen stored in the blood and lungs can keep a person alive for several minutes after breathing stops, this sequence of events can lead to death. Choking was the fourth most common cause of unintentional injury-related death in the US in 2011.Deaths from choking most often occur in the very young (children under 2 years old) and in the elderly (adults over 75 years). Obstruction of the airway can occur at the level of the pharynx or the trachea. Foods that can adapt their shape to that of the pharynx (such as bananas, marshmallows, or gelatinous candies) can be a danger not just for children but for persons of any age.Choking is one type of airway obstruction, which includes any blockage of the air-conducting passages, including blockage due to tumors, swelling of the airway tissues, and compression of the laryngopharynx, larynx or vertebrate trachea in strangulation.
Providing appropriated first-aid can solve choking (see more details below).

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