Types of aortic regurgitation (AR) based on mechanism
Following are the types of aortic regurgitation based on the mechanism:
Type 1: Normal valve cusps with incomplete coaptation due to aortic root dilatation and a central regurgitant jet.
– Any of the components of the aortic root including annulus, sinuses of Valsalva and sinotubular junction exceeds normal limits.
Type 2: Eccentric regurgitant jet due to cusp prolapse or fenestration.
– When the free edge of one or more aortic cusps passed beyond the plane of the aortic annulus, it was considered as prolapse.
Type 3: Retraction with poor quality of cusp tissue producing a large central or eccentric jet.
This classification was used to predict surgical repairability and outcome based on transesophageal echocardiography (TEE) . In this study, agreement between TEE findings and surgical inspection findings was 93%. Final surgical approach could be predicted by TEE in 86% of those undergoing aortic valve repair and in 93% of those undergoing valve replacement.
- le Polain de Waroux JB, Pouleur AC, Goffinet C, Vancraeynest D, Van Dyck M, Robert A, Gerber BL, Pasquet A, El Khoury G, Vanoverschelde JL. Functional anatomy of aortic regurgitation: accuracy, prediction of surgical repairability, and outcome implications of transesophageal echocardiography. Circulation 2007;116:I264–269.