Idiopathic dilatation of the right atrium in a young woman is reported. Thoracotomy was performed for suspected pericardial cyst. Intraoperative findings suggested idiopathic right atrial dilatation, which was histologically confirmed. Two years after partial resection of the dilated right atrial wall the patient is doing well. Management of asymptomatic idiopathic dilatation of the right atriu...

ABSTRACTThe valves of right horn of systemic venous sinus are prominent structures within the right atrium during early embryonic period. Involution of these structures may not be complete, resulting in a spectrum of anatomical presentations such as cyanosis. A full-term male neonate referred to our hospital for precise evaluation of severe cyanosis on the first day of life. Echocardiographic e...

A 61-year-old man was admitted to the hospital because of orthopnea and was diagnosed with heart failure with a continuous heart murmur. A transthoracic echocardiogram revealed turbulent flow from the right coronary sinus of Valsalva to the right atrium throughout the cardiac cycle. Aortography confirmed the presence of a shunt jet from the right coronary sinus of Valsalva to the right atrium. ...

Figure 1 Photographs (A; case 1 and B; case 2) and illustrations of Figure 1A (C) and Figure 1B (D) showing double superior vena cava: right connected to right atrium and left to the coronary sinus. pLSVC: persistent left superior vena cava; RSVC; right superior vena cava; CS: coronary sinus; LV: left ventricle; RA: right atrium; AA ascending aorta; IVC: inferior vena cava. In both cases, the v...

T HE cardiac atria of the normal adult are nearly equal in size; the right averages 163 ml. in capacity, the left 140 ml.' The left atrium is more prone to enlarge, usually in association with mitral valve disease; it rarely reaches extreme volumes of 3,000 ml.2 Extreme left atriomegaly was first reported as "aneurysmal dilatation of the left auricle" in 1849 by Hewett,3 but the clinical aspect...

OBJECTIVES To compare the time course of resumption of mechanical performance of the left and right atrium after the novel method of internal low-energy cardioversion (CV) and conventional external CV of atrial fibrillation (AF). BACKGROUND Right atrial performance has been shown to normalize before the left atrium after external CV. However, no data on atrial function after internal CV are a...

Abullet located in the interventricular septum is shown in frontal (A) and right lateral (B) chest radiography and in an echocardiogram (C; RA indicates right atrium; RV, right ventricle; LA, left atrium; and LV, left ventricle. Superior white arrow, labeled BULLET, shows the bullet located at the interventricular septum). It is from a 37-year-old policeman who was shot while on duty. The bulle...

Severe tricuspid valve insufficiency causes right atrial dilatation, venous congestion, and reduced atrial contractility, and may eventually lead to right heart failure. We report a case of a patient with severe tricuspid valve insufficiency, right heart failure, and a massively dilated right atrium. The enormously dilated atrium compressed the right lung, resulting in a radiographic appearance...