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In contrast, a permanent loss of smell may be caused by death of olfactory receptor neurons in the nose or by brain injury in which there is damage to the olfactory nerve or damage to brain areas that process smell (see olfactory system). The lack of the sense of smell at birth, usually due to genetic factors, is referred to as congenital anosmia.
Hypoxia can be due to external causes, when the breathing gas is hypoxic, or internal causes, such as reduced effectiveness of gas transfer in the lungs, reduced capacity of the blood to carry oxygen, compromised general or local perfusion, or inability of the affected tissues to extract oxygen from, or metabolically process, an adequate supply ...
Hypoxemia is usually defined in terms of reduced partial pressure of oxygen (mm Hg) in arterial blood, but also in terms of reduced content of oxygen (ml oxygen per dl blood) or percentage saturation of hemoglobin (the oxygen-binding protein within red blood cells) with oxygen, which is either found singly or in combination. [2] [5]
Hyposmia, or microsmia, [1] is a reduced ability to smell and to detect odors.A related condition is anosmia, in which no odors can be detected.Some of the causes of olfaction problems are allergies, nasal polyps, viral infections and head trauma.
Anosmia is the inability to perceive odor, or in other words a lack of functioning olfaction.Many patients may experience unilateral or bilateral anosmia. A temporary loss of smell can be caused by a blocked nose or infection. In contrast, a permanent loss of smell may be caused by death of olfactory receptor neurons in the nose or by brain injury in which there is damage to the
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 ...
As far as medical advice, Denneny said, "People who have altered smell are at particular risk for not being able to recognize the odor of smoke from fire, gas leaks, toxic chemicals, spoiled food ...
Cerebral hypoxia, a reduced supply of oxygen to the brain; Diffusion hypoxia or Fink effect, a factor that influences the partial pressure of oxygen within the pulmonary alveoli; Histotoxic hypoxia, the inability of cells to take up or use oxygen from the bloodstream; Anemic hypoxia, Blood is not able to take sufficient amount of oxygen due to ...