Zero on the Celsius scale (0 Â°C) is now defined as the equivalent to 273.15 K, with a temperature difference of 1 deg C equivalent to a difference of 1 K, meaning the unit size in each scale is the same.
Atrial septal defect (ASD) is a congenital heart defect in which blood flows between the atria (upper chambers) of the heart.Normally, the atria are separated by a dividing wall, the interatrial septum.trial septal defect (ASD) is a congenital heart defect in which blood flows between the atria (upper chambers) of the heart.
An atrioventricular septal defect (pronounced EY-tree-oh-ven-TRIC-u-lar SEP-tal DEE-fekt) or AVSD is a heart defect affecting the valves between the heartâs upper and lower chambers and the walls between the chambers.