Atrial septal defect. (Redirected from Patent foramen ovale) 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.
If you think your cat is sleeping a lot, youâre not off base. Cats tend to sleep in some form or another for anywhere from 16 to 20 hours a day.
You should keep your cat away from babies or small children so your cat does not attempt to lay on them. Cats may also sleep on your head so they are easily awakened when you wake up. Cats sleep for about 16 hours/day but they are usually awakened quite easily.