What does a watershed infarct mean? 1 or watershed infarct, medical : a localized area of ischemic tissue death in an area of the brain situated at the farthest point of blood supply from two
What does a watershed infarct mean?
1 or watershed infarct, medical : a localized area of ischemic tissue death in an area of the brain situated at the farthest point of blood supply from two separate cerebral arterial systems that is caused by inadequate blood flow (as from low blood pressure, vasculitis, or blood clot obstruction)
How serious is a watershed stroke?
Prognosis. Watershed strokes are seldom fatal, but they can lead to neuromuscular degeneration, as well as dementia. This degeneration at the watershed regions of the brain can lead to difficulties with movement and motor coordination, as well as speech.
What is a watershed stroke?
A watershed stroke describes a stroke that affects one or more of the watershed regions of the brain. The watershed regions of the brain are located at the farthest end branches of two adjacent vascular territories (areas supplied by arteries).
What is a vascular watershed zone?
Watershed area is the medical term referring to regions of the body that receive dual blood supply from the most distal branches of two large arteries, such as the splenic flexure of the large intestine.
What causes infarction?
Infarction is tissue death (necrosis) due to inadequate blood supply to the affected area. It may be caused by artery blockages, rupture, mechanical compression, or vasoconstriction. The resulting lesion is referred to as an infarct (from the Latin infarctus, “stuffed into”).
What is meant by watershed?
Accordingly, “watershed is defined as any surface area from which runoff resulting from rainfall is collected and drained through a common point. It is synonymous with a drainage basin or catchment area. A watershed may be only a few hectares as in small ponds or hundreds of square kilometres as in rivers.
What is watershed line in anatomy?
Purpose: The watershed line is a useful surgical landmark for positioning a volar locking plate. Implants placed on or distal to it can impinge on flexor tendons and cause injury. In the lateral half, the distal and proximal lines of the medial half merged to form a single line.
Where is the biggest estuary in America?
The Chesapeake Bay
The Chesapeake Bay is the largest of more than 100 estuaries in the United States. About half of the Bay’s water volume comes from salt water from the Atlantic Ocean. The other half drains into the Bay from its enormous 64,000-square-mile watershed.
What is the biggest estuary in America?
the Chesapeake Bay Watershed
The largest estuary in North America, the Chesapeake Bay Watershed covers 64,000 square miles and includes more than 150 rivers and streams that drain into the Bay.
What is the difference between an infarct and infarction?
86 What is the difference between an infarct and infarction? An infarct is an area of ischemic necrosis. Infarction is the process that leads to this ischemic necrosis.
Can infarction be cured?
Can stroke be cured? The short answer is yes, stroke can be cured — but it occurs in two stages. First, doctors administer specific treatment to restore normal blood flow in the brain. Then, the patient participates in rehabilitation to cure the secondary effects.
How big is the watershed of the Columbia River?
View larger map. The Columbia River watershed covers a major portion of North America, including parts of seven states and British Columbia, Canada. It provides drainage for hundreds of rivers, creeks, and streams – covering an area of more than 260,000 square miles.
Where are EPA projects in the Columbia River basin?
One example of how this type of collaboration can result in improved environmental quality is the project in Wasco County, near The Dalles.
Where are the headwaters of the Columbia River?
Photo courtesy of U.S. Bureau of Reclamation. The free-flowing headwaters of the Columbia River are located in the Canadian Rockies where snowmelt and spring water fill Columbia Lake near British Columbia’s border with Alberta. From the headwaters, the river flows 600 miles downstream…
What is the importance of the Columbia River basin?
It was the first legislation to officially designate the national importance of restoring the Columbia River Basin, one of our nation’s largest watersheds. The legislation focuses on the U.S. portion of the Basin, including the states of Oregon, Washington, Idaho, and Montana.