The unusual suspect: Anemia-induced systolic anterior motion of the mitral valve and intraventricular dynamic obstruction in a hyperdynamic heart as unexpected causes of exertional dyspnea after cardiac surgery

Abstract

Dynamic left ventricular (LV) outflow tract obstruction is a characteristic feature of hypertrophic cardiomyopathy; however, it can also occur in association with hyperdynamic LV contraction and/or changes in the cardiac loading condition, even in a structurally normal or near-normal heart. Here, we report a case of anemia-induced systolic anterior motion of the mitral valve and the resultant intraventricular obstruction in a patient who underwent coronary artery bypass grafting and suffered from anemia associated with recurrent gastrointestinal bleeding. © The Korean Society for Thoracic and Cardiovascular Surgery. 2013.