Rare case of bacterial endocarditis associated with ostium secundum atrial septal defect

Aortic valve disease and ventricular septal defects are common lesions to be associated with Infective Endocarditis. However atrial septal defect is rarely associated with infective endocarditis, due to shunting taking place between low pressure difference chambers. Though rare there are few case reports of Infective endocarditis in atrial septal defects. We report a case of atrial septal defect with infective endocarditis having vegetation over the warfarin ridge near left atrial appendage. Mitral regurgitation was caused due LV geometrical changes secondary to Ostium secundum ASD producing a turbulent jet that was hitting warfarin ridge of left atrium which may have lead to injury and development of vegetation.