hypoxia

(noun)

A condition in which tissues (especially the blood) are deprived of an adequate supply of oxygen; anoxia.

Related Terms

  • shock
  • hypoperfusion
  • peripheral chemoreceptors
  • central chemoreceptors
  • external intercostal muscles
  • coagulation
  • oxyhemoglobin

(noun)

A condition in which tissues are deprived of an adequate supply of oxygen for metabolic purposes; anoxia.

Related Terms

  • shock
  • hypoperfusion
  • peripheral chemoreceptors
  • central chemoreceptors
  • external intercostal muscles
  • coagulation
  • oxyhemoglobin

(noun)

A system-wide deficiency in the levels of oxygen that reach the tissues.

Related Terms

  • shock
  • hypoperfusion
  • peripheral chemoreceptors
  • central chemoreceptors
  • external intercostal muscles
  • coagulation
  • oxyhemoglobin

Examples of hypoxia in the following topics:

  • Hypoxia

    • Hypoxia, or hypoxiation, is inadequate oxygen supply to the body as a whole (generalized hypoxia) or a region of the body (tissue hypoxia).
    • Hypoxia, or hypoxiation, is a pathological condition in which the body as a whole (generalized hypoxia) or a region of the body (tissue hypoxia) is deprived of adequate oxygen supply.
    • Hypoxemic hypoxia is a generalized hypoxia, with an inadequate supply of oxygen to the body as a whole.
    • The term "hypoxemic hypoxia" specifies hypoxia caused by low partial pressure of oxygen in arterial blood.
    • In severe hypoxia, or hypoxia of very rapid onset, changes in levels of consciousness, seizures, coma, priapism, and death occur.
  • Chemoreceptor Regulation of Breathing

    • They can be desensitized over time from chronic hypoxia (oxygen deficiency) and increased carbon dioxide.
    • Chemoreceptor feedback also adjusts for oxygen levels to prevent hypoxia, though only the peripheral chemoreceptors sense oxygen levels.
  • Anemia

    • Anemia is a decrease in number of red blood cells or less than the normal quantity of hemoglobin in the blood resulting in tissue hypoxia.
    • Because hemoglobin (found inside RBCs) normally carries oxygen from the lungs to the tissues, anemia leads to hypoxia (lack of oxygen) in organs.
  • Pneumocystis Pneumonia

    • The disease attacks the interstitial, fibrous tissue of the lungs, with marked thickening of the alveolar septa and alveoli, leading to significant hypoxia which can be fatal if not treated aggressively.
    • Oxygen is less able to diffuse into the blood, leading to hypoxia.
    • Hypoxia, along with high arterial carbon dioxide (CO2) levels, stimulates hyper-ventilatory effort, thereby causing dyspnea (breathlessness).
  • Carbon Monoxide Poisoning

    • This prevents oxygen binding to hemoglobin, reducing the oxygen-carrying capacity of the blood, leading to hypoxia.
    • Carbon monoxide also binds to cytochrome oxidase with less affinity than oxygen, so it is possible that it requires significant intracellular hypoxia before binding.
  • Pulmonary Edema

    • Pulmonary edema, especially in the acute setting, can lead to respiratory failure, cardiac arrest due to hypoxia, and death.
  • Respiratory Distress Syndrome

    • People with ARDS usually present with shortness of breath, tachypnea leading to hypoxia, and providing less oxygen to the brain occasionally causing confusion.
  • Tumor Suppressor Genes

    • The role of normal p53 is to monitor DNA and the supply of oxygen (hypoxia is a condition of reduced oxygen supply).
  • RBC Life Cycle

    • Erythropoiesis can be stimulated by the hormone erythropoietin, which is synthesized by the kidney in response to hypoxia (systemic oxygen deficiency).
  • Teratogens

    • Cocaine appear to exert a number of its effects through peripheral vasoconstriction leading to fetal hypoxia.
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