AskDefine | Define smothering

Dictionary Definition

smothering adj : causing difficulty in breathing especially through lack of fresh air and presence of heat; "the choking June dust"; "the smothering soft voices"; "smothering heat"; "the room was suffocating--hot and airless" [syn: suffocating, suffocative]

User Contributed Dictionary

English

Verb

smothering
  1. present participle of smother

Extensive Definition

Asphyxia (from Greek a-, "without" and σφυγμός (sphygmos), "pulse, heartbeat") is a condition of severely deficient supply of oxygen to the body that arises from being unable to breathe normally. An example of Asphyxia is choking. Asphyxia causes generalized hypoxia, which primarily affects the tissues and organs most sensitive to hypoxia first, such as the brain, hence resulting in cerebral hypoxia. Asphyxia is usually characterized by air hunger, but this is not always the case; the urge to breathe is triggered by rising carbon dioxide levels in the blood rather than diminishing oxygen levels. Sometimes there is not enough carbon dioxide to cause air hunger, and victims become hypoxic without knowing it. This may occur, for example, if the oxygen in the air of an enclosed space is displaced by a large amount of inert gas. In any case, the absence of effective remedial action will very rapidly lead to unconsciousness, brain damage, and death. The time to death is dependent on the particular mechanism of asphyxia.
Asphyxia is used to maim or kill in capital punishment, suicide, torture, and warfare. It is also used non-fatally in martial arts, combat sports, BDSM, and during sex as erotic asphyxia. Because the need to breathe is triggered by the level of carbon dioxide in the blood, some victims may not experience an urgent need to breathe and may remain unaware of the onset of hypoxia.

Chemical or physiological interference with respiration

Various chemical and physiological situations can interfere with the body's ability to absorb and use oxygen or regulate blood oxygen levels:

Smothering

Smothering refers to the mechanical obstruction of the flow of air from the environment into the mouth and/or nostrils, for instance, by covering the mouth and nose with a hand, pillow, or a plastic bag. Smothering can be either partial or complete, where partial indicates that the person being smothered is able to inhale some air, although less than required. In a normal situation, smothering requires at least partial obstruction of both the nasal cavities and the mouth to lead to asphyxia. Smothering with the hands or chest is used in some combat sports to distract the opponent, and create openings for transitions, as the opponent is forced to react to the smothering. It is also used in BDSM as a type of facesitting.
In some cases, smothering is combined with simultaneous compressive asphyxia. One example is overlay, in which an adult accidentally rolls over an infant during co-sleeping, an accident that often goes unnoticed and is mistakenly thought to be sudden infant death syndrome. Other accidents involving a similar mechanism are cave-ins or when an individual is buried in sand or grain. In homicidal cases, the term burking is often ascribed to a killing method that involves simultaneous smothering and compression of the torso.

Compressive asphyxia

Compressive asphyxia (also called chest compression) refers to the mechanical limitation of the expansion of the lungs by compressing the torso, hence interfering with breathing. Compressive asphyxia occurs when the chest or abdomen is compressed posteriorly. In accidents, the term traumatic asphyxia or crush asphyxia is usually used to describe compressive asphyxia resulting from being crushed or pinned under a large weight or force. An example of traumatic asphyxia includes cases in which an individual has been using a car-jack to repair a car from below, only to be crushed under the weight of the vehicle
It may be a cause of death in detainee who have been restrained and left prone e.g. in police vehicles and are unable to move into safer positions, when it has been styled 'restraint asphyxia'.
Chest compression is also featured in various grappling combat sports, where it is sometimes called wringing. Such techniques are used either to tire the opponent or as complementary or distractive moves in combination with pinning holds, or sometimes even as submission holds. Examples of chest compression include the knee-on-stomach position, or techniques such as leg scissors (also referred to as body scissors and in budo referred to as do-jime, 胴絞, "trunk strangle" or "body triangle") where you wrap the legs around the opponent's midsection and squeeze them together.
Pressing is a form of torture or execution that works through asphyxia.

Perinatal asphyxia

Perinatal asphyxia is the medical condition resulting from deprivation of oxygen (hypoxia) to a newborn infant long enough to cause apparent harm. It results most commonly from a drop in maternal blood pressure or interference during delivery with blood flow to the infant's brain. This can occur due to inadequate circulation or perfusion, impaired respiratory effort, or inadequate ventilation. Perinatal asphyxia happens in 2 to 10 per 1000 newborns that are born a terme.

References

Further reading

smothering in Danish: Kvælning
smothering in German: Asphyxie
smothering in Estonian: Lämbumine
smothering in Spanish: Anoxia
smothering in French: Asphyxie
smothering in Korean: 질식
smothering in Italian: Anossia
smothering in Lithuanian: Uždusimas
smothering in Dutch: Wurging
smothering in Japanese: 窒息
smothering in Polish: Asfiksja
smothering in Portuguese: Asfixia
smothering in Russian: Асфиксия
smothering in Simple English: Suffocation
smothering in Finnish: Asfyksia
smothering in Swedish: Kvävning
smothering in Ukrainian: Асфіксія
smothering in Chinese: 窒息
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