From PETMD.com:
WHAT IS A LIVER SHUNT?
First, we need to review some canine anatomy and physiology.
A network of veins (called the portal system) drains blood
away from the digestive tract. This blood carries nutrients,
hormones, and waste material and is supposed to enter the liver
before it travels to the rest of the body.
The liver takes what it needs to function properly
and also detoxifies the blood before sending it onward.
A shunt is defined as a passage "that allows the flow of materials
between two structures that are not usually connected".
A portosystemic shunt is, specifically, an abnormal blood vessel
(or vessels) that connects the "portal" system
draining the digestive tract to the "systemic" circulatory system
feeding the rest of the body, thereby bypassing the liver.
That is where are currently are. Joy will be moved to her "foster to adopt"
home in Michigan and her surgical consultation, ultrasound and shunt surgery
will take place at Michigan State University in Lansing Michigan.
Unfortunately, rescue groups do not get a discount and the final costs
associated with the surgery and all the "pre-surgical care"
is estimated to be between $4500 and $5000.
Joy has not yet moved to her FTA home in Michigan and
it will be at least four weeks before we are able to get an appointment.
After a few days with the Lewis family,
she is currently being fostered in Indiana with Ron Crabtree,
but should move to her FTA home within a week or two.
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