acute hypoxia

acute hypoxia

a sudden or rapid depletion in available oxygen at the tissue level. The condition may result from asphyxia, airway obstruction, acute hemorrhage, blockage of alveoli by edema or infectious exudate, or abrupt cardiorespiratory failure. Clinical signs may include hypoventilation or hyperventilation to the point of air hunger and neurological deficits ranging from headache and confusion to loss of consciousness. Compare chronic hypoxia.
References in periodicals archive ?
However, if hypoxia progresses gradually, tumour cells are likely to produce angiogenic factors in response to environmental cues; therefore, tumour necrosis is most likely induced by acute hypoxia.
At an inquest into the death, HM Coroner Louise Hunt recorded a narrative verdict and said: "Lewis died from acute hypoxia which occurred during labour because he had a small placenta.
Acute hypoxia in tumors: implications for modifiers of radiation effects.
Pulmonary tumor embolism syndrome can present in a variety of ways, ranging from acute hypoxia due to large proximal emboli to indolent pulmonary hypertension developing from lymphatic or microvascular invasion (14).
The patterns may predispose a patient toward a greater vulnerability for superimposed, acute hypoxic lesions (overlap patterns/lesions, see below) or may sometimes protect against acute hypoxia in labor because PR can be an adaptive placental response and, in fact, protect the fetus against birth-related hypoxia.
Methods: In this experimental study, 33 New Zealand male rabbits were assigned to control, acute hypoxia (4 hours) and intermittent hypoxia (4 hours/day for 14 days) groups (n=11/group).
The cause of death, although it may vary in degree between individuals depending on their location, was the result of a substantial explosion and the combination of concussion and thermal injuries due to the explosion pressure wave, together with acute hypoxia through exposure to toxic gases and lack of oxygen," the Chief Coroner said.
Effect of acute hypoxia on vaso pressin release and intravascular fluid during dynamic exercise in humans.
Acute hypoxia induced a redistribution of cardiac output from the periphery to key organs such as brain and heart in fetal mammals to maintain oxygenation of essential circulations (Giussani et al.
The purpose of this study was to determine whether acute hypoxia alters the deoxygenation level in vastus lateralis muscle during a 30 s Wingate test, and to compare the muscle deoxygenation level between sprint athletes and untrained men.
Ultrastructural, immunohistochemical and biochemical investigations of the rat liver exposed to experimental diabetes und acute hypoxia with and without application of Ginkgo biloba extract.

Full browser ?