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.
pertaining to a ventricle. ventricular septal defect a congenital heart defect in which the opening in the ventricular septum (normal in the fetus) persists after birth, in either the muscular or fibrous portion, most often due to failure of the bulbar septum to completely close the interventricular foramen.