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. Author manuscript; available in PMC: 2015 Dec 2.
Published in final edited form as: Circulation. 2014 Dec 2;130(23):2057–2066. doi: 10.1161/CIRCULATIONAHA.114.010810

Figure 3.

Figure 3

Contrast injection during cardiac catheterization demonstrates an interatrial communication. Atriagram taken in the right angle oblique projection shows a multipurpose catheter extending from the right atrium into the left atrium, as identified by the characteristic radiocontrast outline of the left pulmonary veins (asterisks). Contrast opacification defines an interatrial communication (arrowheads) that arises from the superomedial left atrial wall and anastomoses with the superior vena cava (arrows) and right atrium.