Case 1/2018 - Preponderant Left Ventricular Restrictive Syndrome in a 28-Year-Old Woman

DOI: 10.5935/abc.20170186 Clinical data: Increase in size of the left atrium known since 8 years of age, when she was labeled as carrier of idiopathic left ventricular restrictive syndrome. Since then, there was a progressive increase of this cavity with the appearance of fatigue to the efforts and atrial fibrillation five months ago, reversed in the occasion with electric shock and amiodarone. Despite a high dose of this drug, 400 mg/day, heart rate remained elevated, around 100 bpm, having developed thyroid dysfunction with TSH elevation and hormone diminution. The arrhythmia reappeared two months later and led to new clinical research.