Pulmonary capillary wedge pressure: Difference between revisions
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{ | ==Overview== | ||
The '''Pulmonary capillary wedge pressure''' (abbreviated '''PCWP'''), as measured by a [[Swan-Ganz catheter]], is the pressure measured in a pulmonary artery after occlusion of that artery. Because of the large [[Compliance (physiology)|compliance]] of the [[pulmonary circulation]], it provides an indirect measure of the left atrial pressure. | |||
{|style="background:LemonChiffon" border="1px" cellpadding="5" | |||
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|Normal range: 4 - 12mm Hg<ref>Braunwald's Heart Disease: A Textbook of Cardiovascular Medicine</ref> | |||
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|Average pressure: 9 mm Hg<ref>Braunwald's Heart Disease: A Textbook of Cardiovascular Medicine</ref> | |||
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==Confirmation that the PA catheter is in the "Wedge" position== | |||
A saturation can be drawn from the tip of the catheter. If the saturation approximates that of the arterial system, then the column of blood that has been drawn is saturated and is reflective of left atrial pressure. | |||
==Diagnosis of Mitral Regurgitation== | |||
The PCWP contains both [[a wave]]s (reflective of the atrial contraction) and [[v wave]]s (reflective of ventricular contraction). In the setting of acute [[mitral regurgitation]], large v waves may be present. | |||
==Reference== | |||
{{reflist|2}} | |||
== | ==Resources== | ||
* {{GPnotebook|-1113980888}} | * {{GPnotebook|-1113980888}} | ||
* [http://www.cvphysiology.com/Heart%20Failure/HF008.htm Overview at cvphysiology.com] | * [http://www.cvphysiology.com/Heart%20Failure/HF008.htm Overview at cvphysiology.com] | ||
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[[Category:Medical terms]] | [[Category:Medical terms]] | ||
[[Category:Medical tests]] | [[Category:Medical tests]] | ||
[[Category:Cardiovascular system]] | [[Category:Cardiovascular system]] | ||
{{WikiDoc Help Menu}} | {{WikiDoc Help Menu}} | ||
{{WikiDoc Sources}} | {{WikiDoc Sources}} | ||
Latest revision as of 15:16, 6 April 2012
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Overview
The Pulmonary capillary wedge pressure (abbreviated PCWP), as measured by a Swan-Ganz catheter, is the pressure measured in a pulmonary artery after occlusion of that artery. Because of the large compliance of the pulmonary circulation, it provides an indirect measure of the left atrial pressure.
| Normal range: 4 - 12mm Hg[1] |
| Average pressure: 9 mm Hg[2] |
Confirmation that the PA catheter is in the "Wedge" position
A saturation can be drawn from the tip of the catheter. If the saturation approximates that of the arterial system, then the column of blood that has been drawn is saturated and is reflective of left atrial pressure.
Diagnosis of Mitral Regurgitation
The PCWP contains both a waves (reflective of the atrial contraction) and v waves (reflective of ventricular contraction). In the setting of acute mitral regurgitation, large v waves may be present.
Reference
Resources
- Template:GPnotebook
- Overview at cvphysiology.com
- Description at virginia.edu
- Pulmonary+wedge+pressure at the US National Library of Medicine Medical Subject Headings (MeSH)