View source for Collateral circulation grading

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{{CMG}}; {{AE}} {{Hilda}}


==Overview==
Collateral Circulation assessed visually using the following grading system

===Grade 0===

[[Grade 0 Collaterals | No collaterals present]]. Angiography fails to reveal evidence of collateral vessels.

===Grade 1 (or partial)===

[[Grade 1 (partial) Collaterals | Minimal collaterals present]]. Evidence of minimal to partial filling of the recipient branch epicardial arteries/infarct region. It is not necessary for one to see the branches connect directly to the major epicardial artery.

===Grade 2 (or complete)===

[[Grade 2 (complete) Collaterals | Well-developed collaterals]]. Evidence of collateral circulation with near complete to complete filling of the recipient major epicardial artery/infarct region.

===Grade 3 (myocardial)===

[[Grade 3 (myocardial) Collaterals | Filling of the myocardium by collaterals]]. If the collaterals are not filling any visible arterial branch, but are only participating in the perfusion of the myocardium.


==Examples==

==References==



{{Coronary Angiography}}

[[Category:Cardiology]]
[[Category:Angiopedia]]

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