We describe a case of severe left ventricular (LV) heart failure caused by tachycardiomyopathy with concomitant presence of
unsolved thrombus in left atrial appendage despite effective oral anticoagulant treatment. Successful ablation of atrial flutter
and atrioventricular nodal reentry tachycardia entailed resolution of heart failure symptoms and normalisation of LV function.
Kardiol Pol 2011; 69, 3: 294-29