With advances in veterinary medicine, more complex surgical procedures are being performed on our beloved pets. Thus, there is an increased need for blood bank programs to supply life-saving blood components. In the past, Veterinarians had to use their own dogs, dogs owned by their staff, or even dogs borrowed from their clients as blood donors in the absence of animal blood banks.
Blood banks for animals depend on animal blood donors for their supply of blood products as human blood banks depend on human blood donors. Animal blood is donated to the specie it belongs. For example, dogs can receive only dog blood; it is similar to other animals as well. Canines also have blood types just like humans; they have eleven different blood groups. The most important dog blood type is the A1/A2 system. A dog can be considered a universal donor if he/ she has A negative blood type.
It is recommended that all recipients be cross matched before receiving a blood transfusion to ensure donor and recipient compatibility despite the fact that canines rarely have isoantibodies against other blood types.
There are two types of cross-matching tests: the major and minor cross matching. For major cross-matches, red cells from the donor are mixed with serum from the recipient. Then it is observed to see if there is a reaction; the recipient may attack donor cells and not accept them. If you have a major cross-match incompatibility you shouldn’t do a transfusion, unless you’re really desperate. In a minor cross-match test, the recipient’s red cells are compared with the donor’s serum. In minor incompatibilities, parts of the donor’s blood can be given to the recipient but not the blood in its entirety.
Potential dog donors should be healthy, have no history of metabolic or heart disease or seizures, has a lean body weight of greater than 50 kg, 1-7 years old, should not be on any medication, except for heartworm and parasite preventatives. They should also have a good temperament, have been neutered and nulliparous, and have jugular veins that can be visualized and palpated easily and are current on vaccines. Because of the amenable disposition and high PCV of Greyhounds, they have been promoted as ideal blood donors.
As with human donors, screening is done to the animal donor’s blood for metabolic and infectious diseases after blood type determination. The following labs are done: CBC, biochemical profile, U/A, fecal exam, von Willebrand’s factor, and testing for Dirofilaria immiti, Ehrlichia canis, Babesia canis, B. gibsoni, Brucella canis (in intact or previously bred dogs), and Bartonella.
Blood donation takes more or less 30 minutes. Prior to going to the donation center, special preparations like fasting is not required, sedation of donors is not also necessary. During the blood donation, the donor is put on a table. In order to expose the skin over the vein to be punctured, there is a need to shave a small patch of hair on the neck. Then the area is cleansed with alcohol. Inserting a needle into the jugular vein, which is a large vein in the neck, collects blood. The blood that goes into the needle goes through a tube, and then it is collected into the collection bag. After the procedure, pressure is applied on the punctured site to stop any bleeding; a mild bruise may be present at the site.
Fluid and nutrients are then replaced by giving water and food after blood is drawn. The body compensates by producing new red blood cells immediately after the donation. In the next 24 hours after donating, strenuous activities should be avoided. Two months must elapse before the dog can donate blood again. By that time, the blood volume and red blood cell count will be back to normal.
The dogs are given gifts and treats after donating. A dog may get a tag, which identifies him or her as a blood donor, edible rewards such as dog biscuits, a jar of baby food, a can or a large bag of dog food and some donors may even get brand new toys or cool donor bandanas.
The blood donations will then be separated into the different blood components - red blood cells, platelets and plasma to be used for both emergency and pre-planned transfusions. The red blood cells are given to recipients suffering from anemia that may be due to trauma or a treatable disease. When the animal is not producing the right amount or is losing too much protein, plasma helps increase blood volume. Platelet-rich plasma is for those recipients with decreased or dysfunctional platelets.
Today, there are several animal blood banks in the world. They supply blood products to the different Veterinary hospitals. It is good that many pet owners responded with enthusiastically to the growing need for blood donations. The blood donated by the animals is brought in to the bank at the Veterinary hospital and to the bank’s bloodmobile, which visits Veterinary clinics and kennel clubs.
Other regional blood banks depend entirely on the generosity of caring people who enroll their dogs in canine blood donor programs and take them to scheduled appointments to donate. Canine blood banks hold drives to find new volunteer donors, just like the Red Cross and other health organizations do to encourage human blood donations.
Do you have a friendly, healthy dog that fits the average weight and age requirements to be a donor volunteer? Would you like your dog save the lives of other dogs? Check the location of regional blood banks for dogs and cats or the list of Veterinary Hospitals and University Veterinary Medical Centers that manage their own blood donor/blood bank programs. You can also contact the one nearest you or ask your Veterinarian if there’s an animal blood donor program with a donation site in your area.
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