Dr. Shobhit

over 6 years ago

Watershed area are those areas which having dual blood supply so, in brain like other watershed area are less vulnerable to hypoperfusion.

The definition of watershed our colleague gave you is apt, but these areas are actually more vulnerable to hypoperfusion, as a pressure drop in both arteries will first affect the areas that their terminal branches supply. Watershed areas are more resistant to ischemia, as embolic or atherosclerotic block to one artery leaves the area supplied by the other.