6AS EXCHAN6E
Definition:
: The process by which oxygen is transported to the cells and carbon dioxide is
transported from the cell
Diffusion of respiratory gasses occurs at the alveolar capillary membrane
Ventilation - process of inhaling oxygen and exhaling carbon dioxide
Disparities:
:Unavailability of oxygen : Narrowed bronchi
Obstruction of bronchi
Inflammation of bronchi
Transport - obtainability and capability of hemohlobin (Hgb) to carry oxygen
Disparities:
: Anemia
Blood loss - acute or chronic
.
Destruction of RBCs
Perfusion - ability of blood to transport oxygen to cells and return carbon dioxide to alveoli
Disparities:
Decreased cardiac output
. Thrombi, emboli, vessel narrowing
Vasoconstriction
Blood loss
Impairment of gas exchange occurs when the diffusion of gases (oxygen and carbon
dioxide) becomes impaired as a result of:
: Ineffective ventilatio