Aorto-right atrial fistula: Late complication of tricuspid valve infective endocarditis

Figure 1 Schematic of abnormal fistula flow and transesophageal doppler imaging. A: Schematic diagram indicating the flow of blood during diastole, as showed by the transesophageal echocardiogram with Doppler; B: Transesophageal 4 chamber view at the level of the aortic valve, with chamber anatomy corresponding to schematic in A; C: Diastolic blood into the RA from the non-coronary cusp of the aorta. RA: Right atrium; RV: Right ventricle; LA: Left atrium; PA: Pulmonary artery.