Rentrop and Cohen’s Collateral Classification
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Associate Editor-In-Chief: Cafer Zorkun, M.D., Ph.D. [2]
Overview
Angiographic assessment of apparent collaterals is useful to quantify the angiogenic response to interventions designed to enhance myocardial perfusion and function in ischemic myocardium. [1] [2] [3]
- Grade 0: No collateral's present.
- Grade 1: Barely detectable coronary flow. Contrast medium passes through collateral channels but fails to opacify the epicardial vessels at any time.
- Grade 2: Partial collateral flow. Contrast material enters but fails to opacify the target epicardial vessel completely.
- Grade 3: Complete perfusion. Contrast material enters and completely opacifies the target epicardial vessel.
References
- ↑ Fuchs S. Lack of correlation between angiographic grading of collateral and myocardial perfusion and function. Coron Ar Disease 2001; 12: 173-78.
- ↑ Abbott JD, Choi EJ, Selzer F, Srinivas VS, Williams DO Impact of Coronary Collaterals on Outcome Following PCI [from the NHLBI Dynamic Registry]. Am J Cardiol. 2005; 96: 676–680.
- ↑ Koerselman J, van der Graaf Y, de Jaegere PP, Grobbee DE. Coronary Collaterals an Important and Underexposed Aspect of Coronary Artery Disease. Circulation. 2003; 107: 2507-2511.