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VQ scan: modified Pioped II
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14
Medical
05/02/2009

Additional Medical Flashcards

 


 

Cards

Term
2 or more large mismatched segmental perfusion defects
Definition

High probability

>=80% chance of PE

Term

High probability scan

 

What % have PE?

Definition
>= 80%
Term
One large plus two moderate mismatched segmental perfusion defect
Definition

High probability

>= 80% chance of PE

Term
Four moderate mismatched segmental perfusion defects
Definition

High probability

>=80% chance of PE

Term
One large plus one moderate mismatched segmental perfusion defects
Definition

Intermediate probability

20%-79% chance of PE

Term
A single matched segmental perfusion defect of any size, with clear chest x-ray
Definition

Intermediate probability

20%-79% chance of PE

Term
Any perfusion defect with a substantially larger chest x-ray abnormality
Definition

Low probability

 

Term
Solitary triple-matched segmental defect in the mid or upper lung zone
Definition
Very low probablity
Term
Definition
Term
Stripe of perfused lung tissue between a perfusion defect and the adjacent pleural surface
Definition
Very low probability
Term
Pleural effusion, no other defect
Definition
Very low probability
Term
One to three small segmental perfusion defects (<25% of segment)
Definition
Very low probability
Term
Solitary triple-matched defect in the lower lung zone
Definition
Intermediate probability
Term
Specificity of a normal or very low probability VQ scan?
Definition
Close to 100%