The median annual wage for flight attendants was $44,860 in May 2015. The median wage is the wage at which half the workers in an occupation earned more than that amount and half earned less. The lowest 10 percent earned less than $25,930, and the highest 10 percent earned more than $72,090.
Definition of Hypoxia. Hypoxia literally means low oxygen, but is defined as a deficiency in the amount of oxygen that reaches the tissues of the body. It differs from hypoxemia, which means an inadequate amount of oxygen traveling in the blood.
Hypoxia exists when there is a reduced amount of oxygen in the tissues of the body. Hypoxemia refers to a reduction in PO2 below the normal range, regardless of whether gas exchange is impaired in the lung, CaO2 is adequate, or tissue hypoxia exists. There are several potential physiologic mechanisms for hypoxemia, but in patients with COPD the predominant one is V/Q mismatching, with or without alveolar hypoventilation, as indicated by PaCO2.