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.
These are the times a cat in the wild would tend to hunt. Your cat's age greatly affects his activity level. Young kittens, under 1 year old, tend to sleep more than adult cats while they are still growing. Newborn kittens actually sleep most of the day for their first few weeks of life. Senior cats, over 7 years old, slow down and sleep more than their younger counterparts. Conditions like arthritis and other joint issues tend to impair your older cat's mobility, making him more apt to sleep for a longer period of time.