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Module title = Tutorial: Congestive Heart Failure
Lesson title = Vascular Redistribution
This is lesson 4 of 10 in this module
When the intravascular pressure increases, vessels in the top half of the lung which are normally underfilled (due to the effects of gravity) become more filled. This gives an appearance of vascular markings in the top half of the lung being as prominent and a similar size (diameter) as vascular markings in the lower half of the lung.
When this happens, it is called
vascular redistribution
. In this x-ray, there is no vascular redistribution. Vascular markings in the top half of the lung can be seen, but they are normal (smaller and less prominent than vessels in the lower half of the lungs):
When vascular redistribution occurs, it is usually in the presence of other findings of congestive heart failure, such as interstitial edema or alveolar edema, making the lung appear whiter. In fact, the extra fluid in the vessels, interstitial spaces, and alveolar spaces will all contribute to making the lungs appear more white in congestive heart failure.
In the following example, vascular redistribution is present:
Lesson 4 of 10
That was the last lesson!
