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Aircraft emergency oxygen system using a high pressure oxygen cylinder with regulator as supply. [2] portable oxygen equipment Supplementary oxygen provision equipment that is easily moved but not designed to be carried, and weighs more than about 10 pounds (4.5 kg). [3] Compare with ambulatory oxygen equipment positive airway pressure
The six-minute walk test, which measures how far a person can walk on a flat surface in six minutes to test exercise capacity by measuring oxygen levels in response to exercise. [ 95 ] Diagnostic measurements that may be relevant include: [ 99 ] Lung volumes , including lung capacity, airway resistance , respiratory muscle strength, diffusing ...
The most vulnerable cells in the brain, CA1 neurons of the hippocampus, are fatally injured by as little as 10 minutes without oxygen. However, the injured cells do not actually die until hours after resuscitation. [8] This delayed death can be prevented in vitro by a simple drug treatment even after 20 minutes without oxygen. [9]
Hypoxia (environmental), an environment with low, or near-zero, oxygen content, commonly called anoxia; Anaerobic (disambiguation), a technical word which literally means without air (where "air" is generally used to mean oxygen), as opposed to aerobic; Aerobic (disambiguation), antonym of anaerobic
[2] [5] While there is general agreement that an arterial blood gas measurement which shows that the partial pressure of oxygen is lower than normal constitutes hypoxemia, [5] [6] [7] there is less agreement concerning whether the oxygen content of blood is relevant in determining hypoxemia. This definition would include oxygen carried by ...
Smoking drastically reduces oxygen intake efficiency, and can have the effect of reducing tolerance by 1,000–2,000 metres (3,300–6,600 ft). [4] Hypoxia can be produced in a hypobaric chamber . This can be useful for identifying individual symptoms of hypoxia, along with rough estimates of the altitude that causes problems for each person.