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 balloon was introduced into the isolated rabbit left ventricle with intraventricular volume being controlled by a feedback amplifier. Pressure-volume and stiffness-pressure relations were determined as intraventricular volume was changed. These ventricular relations were explained according to the theory of wall muscle mechanics.

Methods We conducted a retrospective observational analysis of our experience with different approaches and perfusion techniques in patients with thoraco-abdominal aneurysm. Group 1: 3 patients: aortic cross-clamp, with left heart bypass, without selective organ perfusion Group 2: 2 patients: aortic cross-clamp, without left heart bypass, selective organ perfusion Group 3: 1 patient: aortic cro...

The heart develops from a linear tubular precursor, which loops to the right and undergoes terminal differentiation to form the multichambered heart. Heart looping is the earliest manifestation of left-right asymmetry and determines the eventual heart situs. The signalling processes that impart laterality to the unlooped heart tube and thus allow the developing organ to interpret the left-right...

In this approach, the Left ventricular assist pump for patients with left ventricular failure isused. The failure of the left ventricle is the most common heart disease during these days. Inthis article, a State feedback controller method is used to optimize the efficiency of a samplingpump current. Particle Swarm Algorithm, which is a set of rules to update the position andvelocity, is applied...

introduction: chest x–ray is one of the most common method of imaging. cardio thoracic ratio ( ctr ) is one of the parameters of chest x–ray that is used for determining cardiac enlargement. echocardiography as compared to chest x–ray is expensive and all centers dont have it, but it can determine heart size, valvular diseases, ejection fraction, left ventricular hypertrophy (lvh), pericardial ...

Left ventricular hypoplasia complicates other forms of congenital heart disease in addition to the classic ‘‘hypoplastic left heart syndrome.’’ Within this heterogeneous group, subtle anatomic differences determine surgical management and ultimate prognosis. Thus, an individualized approach is necessary to optimize outcomes in this complex population.