title: Massive Right Atrial Thrombus Formation Followed by an Atrial Flutter with 1:1 Atrioventricular Conduction in a Patient with Arrhythmogenic Right Ventricular Cardiomyopathy.
abstract: A 46-year-old man was admitted to our hospital for near syncope and palpitations. An electrocardiogram showed a common type of atrial flutter (AFL) with 1:1 atrioventricular conduction. Transthoracic echocardiography revealed a massive right atrial (RA) thrombus with a huge RA and right ventricle. The patient was diagnosed with arrhythmogenic right ventricular cardiomyopathy. It was difficult to control the heart rate with beta-blockers during AFL, which resulted in the deterioration of right-sided heart failure. The effect of anticoagulation therapy for the RA thrombus was also limited. Restoration to sinus rhythm by catheter ablation effectively improved the right-sided heart failure, and the massive RA thrombus eventually disappeared.
authors: Department of Cardiovascular Medicine, Nippon Medical School, Japan.
authors: Kanako
authors: K
authors: Ito
authors: Yu-Ki
authors: YK
authors: Iwasaki
authors: Yuhi
authors: Y
authors: Fujimoto
authors: Eiichiro
authors: E
authors: Oka
authors: Kenta
authors: K
authors: Takahashi
authors: Ippei
authors: I
authors: Tsuboi
authors: Kenji
authors: K
authors: Yodogawa
authors: Meiso
authors: M
authors: Hayashi
authors: Yasushi
authors: Y
authors: Miyauchi
authors: Wataru
authors: W
authors: Shimizu
mesh_terms: D019571:Arrhythmogenic Right Ventricular Dysplasia / Q000150:complications* / Q000601:surgery; D001282:Atrial Flutter / Q000150:complications*; D017115:Catheter Ablation; D004452:Echocardiography; D004562:Electrocardiography; D006329:Heart Conduction System / Q000503:physiopathology; D006339:Heart Rate; D006801:Humans; D008297:Male; D008875:Middle Aged; D013575:Syncope; D013927:Thrombosis / Q000209:etiology*