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 ?
The hypoxia-induced tachycardia led to an increase in cardiac output that occurred from an increase in sympathetic activity, given that plasma norepinephrine concentration has been found elevated in previous studies that tested acute hypoxia at rest or exercise (13,14).
However, it is unknown whether it also modulates the hemodynamic reactions to acute hypoxia, cardiac baroreflex sensitivity (BRS) and if there is any effect of dopamine withdrawal [8].
Cerebral artery dilatation maintains cerebral oxygenation at extreme altitude and in acute hypoxia - An ultrasound and MRI study.
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.
Several authors showed contrary outcomes for the impact of acute hypoxia on selected physiological variables and thresholds.
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.
1] 4 Yes Routine 5 Yes Routine 6 No Acute hypoxia 7 Yes Routine 8 Yes Acute hypoxia and dyspnea 9 Yes Acute hypoxia 10 Yes Respiratory failure 11 Yes Cough/fever 12 Yes Decreased [FEV.
Shortly after the first report on the effect of acute hypoxia on K* channels was published [22], Smirnov et al.
Hearing thresholds under acute hypoxia and relationship to slowing in the auditory modality.

Full browser ?