A member asked:
What does blood clot in the lungs (pulmonary embolus) show on ventilation perfusion scan?
13 doctors weighed in across 5 answers
Lack of blood flow: A ventilation perfusion scan is a test for a blood clot in the lungs, or pulmonary embolism. If there is a blood clot, an area of the lung will not be perfused, but will be ventilated, and therefore a mismatch will be seen.
Answered 2/6/2018
6.4k views
Various: Typically a pulmonary embolism will show defects on the perfusion portion of a ventilation/perfusion scan (also know as a vq).
Answered 8/29/2015
6.3k views
Mismatch: Normal ventilation and decreased perfusion, that is normal air but blocked blood flow by clots.
Answered 9/8/2016
5.9k views
Sometimes unclear: The findings of a ventilation perfusion scan can sometimes be non-specific and unhelpful. The better way to confirm a pe now is with a spiral ct scan of the lungs with infusion.
Answered 2/6/2018
5.9k views
Typical: The typical finding is a mismatch between ventilation and perfusion, however in people with small clots or underlying pulmonary disease the findings are the scan are not always clear.
Answered 2/6/2018
5.5k views
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