Rentrop et al graded the degree of collateral channel filling from a contralateral coronary artery as seen on coronary angiography.
Patient selection: severe atherosclerotic coronary artery disease
Method - coronary angiography with:
(1) the target artery occluded by an angioplasty balloon and
(2) dye injected into the contralateral coronary artery via a second catheter
Filling from Contalateral Artery |
Grade |
none |
0 |
filling of side branches via collateral channels but without visualization of the epicardial segment |
1 |
partial filling of the epicardial segment |
2 |
complete filling of epicardial segment of artery |
3 |
This can be restated:
Collateral Filling of Side Branches from the Contralateral Artery |
Filling of Distal Epicardial Segment of the Culprit Artery |
Grade |
none |
none |
0 |
present |
none |
1 |
present |
partial |
2 |
present |
complete |
3 |
Specialty: Cardiology
ICD-10: ,