Aneurysm Recanalization Stratification Scale of Ogilvy et al

Description

Ogilvy et al reported the Aneurysm Recanalization Stratification Scale for a patient who has been treated for a cerebral aneurysm. This can help to identify a patient who may need to be retreated. The authors are from Beth Israel Deaconess Medical Center and Harvard Medical School.

Patient selection: cerebral aneurysm treated endovascularly

Parameters:

(1) aneurysm diameter in mm

(2) aneurysm status

(3) thrombosis

(4) treatment method

(5) initial treatment result by Raymond Roy Occlusion Classification (RROC)

Parameter	Finding	Points
aneurysm diameter	<= 10 mm	0
	> 10 mm	2
aneurysm status	unruptured	0
	ruptured	2
thrombosis	absent	0
	present	2
treatment	coils only	0
	stent assistance	-1
	flow diversion	-2
initial treatment result	Raymond Roy 1	0
	Raymond Roy 2 (neck remnant)	1
	Raymond Roy 3 (residual aneurysm)	2

total score =

= SUM(points for all 5 parameters)

Interpretation:

• minimum score: -2

• maximum score: 9

• The higher the score the greater the risk for recanalization and need to retreat,

Score	Retreatment
-2 or -1	low
0 or 1	low-to-moderate
2 to 4	moderate
5	moderate-to-high
6 to 8	high

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