Arterial Anastomosis: Pressure & Supply Benefits

[briton]

With say arterial anastomosis (eg right and left gastroepiploic arteries) what actually happens at the region where they meet, do to the 2 arteries joining - do you just get a large build up pressure?
Is the main reason for having an arterial anastomosis so you have multiple supply to a region (so incase one artery is blocked, the distal region is still perfused)?

 

[NoTime]

FWIW
If the plumbing here was pipe then you could treat this much like two parallel resistors in an electric circuit. The pressure at the anastomosis will be higher than it would be if you clamped either right or left gastroepiploic arteries. In general there would be no "build up" of pressure. The elasticity of arteries seems unlikely to change this as the overall effect of that seems to be to damp the pressure peaks.

Since they seem to use one of these arteries for cardiac bypass it seems unlikely that the dual feed would confer a general survival benefit. My guess is that whatever guide molecule causes the arterial growth happens to diffuse to two places capable of responding to the signal at the same time.

 

[ravenprp]

Arterial anastomosis is a surgical procedure in which two arteries are connected to each other to allow blood flow from one to the other. This can occur in various regions of the body, such as the gastrointestinal tract, to improve blood supply to a specific area.

One of the main benefits of arterial anastomosis is the increased blood supply to the region. By joining two arteries, there is a larger volume of blood flowing through the anastomosis, which can help improve oxygen and nutrient delivery to the tissues. This increased blood flow can also help reduce the risk of tissue damage or death due to inadequate blood supply.

In terms of pressure, the anastomosis does not cause a significant build-up of pressure. The pressure in the arteries is regulated by the body's natural mechanisms, such as the autoregulation of blood flow. The anastomosis simply allows for a more efficient transfer of blood from one artery to the other, without causing a significant change in pressure.

The main reason for having an arterial anastomosis is indeed to provide multiple blood supply routes to a specific region. This is especially important in cases where one of the arteries supplying the region becomes blocked or damaged. The anastomosis acts as a backup route, ensuring that the tissues receive adequate blood supply even if one of the arteries is compromised.

In summary, arterial anastomosis provides numerous benefits, including increased blood supply and a backup route in case of artery blockage. It does not cause a significant build-up of pressure and is a commonly used surgical technique to improve blood flow to vital organs and tissues.