Ventilation-perfusion mismatch: Difference between revisions
Jump to navigation
Jump to search
No edit summary |
Added some content to overview including references |
||
| Line 2: | Line 2: | ||
{{Ventilation-perfusion mismatch}} | {{Ventilation-perfusion mismatch}} | ||
{{CMG}} | {{CMG}} | ||
== Overview == | |||
Ventilation Perfusion (V/Q) mismatch is said to have occurred when there is a there is defect in alveolar gas exchange in the lung either due to poor perfusion or reduced air entry. In common practice, the term applies mostly to describe conditions that includes the former (poor perfusion)<ref>{{Cite journal|last=Petersson|first=J|date=|title=Gas exchange and ventilation-perfusion relationships in the lung.|url=https://www.ncbi.nlm.nih.gov/pubmed/25063240|journal=Eur Respir J|volume=|pages=|via=}}</ref> | |||
In ideal physiologic conditions, V/Q ratio should be 1, that is 100 percent of the alveoli are recruited (full air entry), good oxygenation and 100 percent of the alveolar capillaries are perfused. However this does not happen even in healthy individuals as not all the alveoli in a healthy lung are recruited. The normal V/Q ratio is estimated to be 0.8. | |||
== Causes == | |||
==[[Ventilation-perfusion mismatch pathophysiology|Pathophysiology]]== | ==[[Ventilation-perfusion mismatch pathophysiology|Pathophysiology]]== | ||
== References == | |||
<references /> | |||
Revision as of 08:20, 31 July 2018
Template:Ventilation-perfusion mismatch Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Overview
Ventilation Perfusion (V/Q) mismatch is said to have occurred when there is a there is defect in alveolar gas exchange in the lung either due to poor perfusion or reduced air entry. In common practice, the term applies mostly to describe conditions that includes the former (poor perfusion)[1]
In ideal physiologic conditions, V/Q ratio should be 1, that is 100 percent of the alveoli are recruited (full air entry), good oxygenation and 100 percent of the alveolar capillaries are perfused. However this does not happen even in healthy individuals as not all the alveoli in a healthy lung are recruited. The normal V/Q ratio is estimated to be 0.8.
Causes
Pathophysiology
References
- ↑ Petersson, J. "Gas exchange and ventilation-perfusion relationships in the lung". Eur Respir J.