Figure 7. Showing the relation of AV note to surrounding anatomy. Note its close proximity to the aortic valve. (R, L, NC stands for right, left and noncoronary cusp of the aortic valve; A1, A2, A3 are the leaflets of the anterior mitral valve and P1, P2, P3 are leaflets of the posterior mitral valve)

From

Significant PR Prolongation and New Onset Left Bundle Branch Block in Aortic Root Abscess: A Marker of Disease Progression and Poor Prognosis

Pramod Theetha Kariyanna, Ashkan Tadayoni, Apoorva Jayarangaiah, Vivek Yadav, Volodymyr Vulkanov, Adam Budzikowski, Moro O. Salifu, Samy I. McFarlane

American Journal of Medical Case Reports. 2020, 8(9), 315-320 doi:10.12691/ajmcr-8-9-15