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.
The average cat sleeps for 15 hours per day, but individual cats vary widely in their shut-eye requirements. A normal healthy cat routinely gets 13 to 20 hours of sleep in a day, so donât worry if yours seems stuck to the same few spots around the house from sunrise to sunset. Adult cats sleep less than young kittens or senior cats, who need more time to recuperate.