Zip Code 21797 Description. Zip Code 21797 is located in the state of Maryland in the Baltimore metro area. Zip code 21797 is primarily located in Howard County. Portions of 21797 are also located in Carroll County. The official US Postal Service name for 21797 is WOODBINE, Maryland. Portions of zip code 21797 are contained within or border the city limits of Eldersburg, MD, .
A patent foramen ovale (PFO) is a defect in the septum (wall) between the two upper (atrial) chambers of the heart. Specifically, the defect is an incomplete closure of the at â¦ rial septum that results in the creation of a flap or a valve-like opening in the atrial septal wall (see illustration).
oval-shaped depression in the interatrial septum. Importance in cardiovascular diseases: can have a congenital defect resulting in a right to left shunt called patent foramen ovale; fossa is also preferred site for transseptal puncture.val-shaped depression in the interatrial septum. Importance in cardiovascular diseases: can have a congenital defect resulting in a right to left shunt called patent foramen ovale; fossa is also preferred site for transseptal puncture.