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Hypoxia differs from hypoxemia and anoxemia, in that hypoxia refers to a state in which oxygen present in a tissue or the whole body is insufficient, whereas hypoxemia and anoxemia refer specifically to states that have low or no oxygen in the blood. [3] Hypoxia in which there is complete absence of oxygen supply is referred to as anoxia.
Tissue hypoxia refers to low levels of oxygen in the tissues of the body and the term hypoxia is a general term for low levels of oxygen. [2] Hypoxemia is usually caused by pulmonary disease whereas tissue oxygenation requires additionally adequate circulation of blood and perfusion of tissue to meet metabolic demands.
Definitions vary among hospitals, and it is even possible for a patient to be upgraded or downgraded simply by being moved from one place to another, with no change in actual physical state. Furthermore, medical science is a highly complex discipline dealing with complicated and often overlapping threats to life and well-being.
-form: used to form adjectives indicating "having the form of" Latin fōrma, form, shape cruciform, cuneiform, falciform fore-before or ahead Old English fōr(e)-, before, in front of foregut, foreshadow fossa: a hollow or depressed area; a trench or channel Latin fossa, ditch, pit fossa ovalis: front-of or pertaining to the forehead
Hypoxia (environmental), abnormally low oxygen content of a specific environment Hypoxia in fish, responses of fish to hypoxia; Hypoxia (medical), abnormally low level of oxygen in the tissues Autoerotic hypoxia or erotic asphyxiation, intentional restriction of oxygen to the brain for sexual arousal
Cerebral hypoxia is a form of hypoxia (reduced supply of oxygen), specifically involving the brain; when the brain is completely deprived of oxygen, it is called cerebral anoxia. There are four categories of cerebral hypoxia; they are, in order of increasing severity: diffuse cerebral hypoxia (DCH), focal cerebral ischemia , cerebral infarction ...
Intermittent hypoxia (also known as episodic hypoxia) is an intervention in which a person or animal undergoes alternating periods of normoxia and hypoxia. Normoxia is defined as exposure to oxygen levels normally found in Earth's atmosphere (~21% O 2 ) and hypoxia as any oxygen levels lower than those of normoxia.
Generalized hypoxia is a medical condition in which the tissues of the body are deprived of the necessary levels of oxygen due to an insufficient supply of oxygen, which may be due to the composition or pressure of the breathing gas, decreased lung ventilation, or respiratory disease, any of which may cause a lower than normal oxygen content in the arterial blood, and consequently a reduced ...