Deceitful dissimulation of dyspnoea

We present a case of a young woman, who was examined for polymorphic complaints. Life-threatening complications during a standard treatment occurred, because of severe left ventricular dysfunction caused by an incessant atrial tachycardia and subsequent tachycardia induced cardiomyopathy. The only symptom reflecting the serious diagnosis was a mild dyspnoea on exertion. Because of patient's dissimulation, this symptom was uncovered late. Focal atrial tachycardia was successfully treated with catheter ablation and the treatment resulted in normalization of the left ventricular systolic function in three months.