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.
Animal blood banks depend solely on animal blood donors. Animal blood is specific to certain specie, dogs can receive dog blood only, and similarly, cats can only receive cat blood. Moreover, dogs have blood types just like humans. Among the eleven different blood groups of dogs, the most important one is the A1/A2 system. Canines with A negative blood types are considered universal donors.
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.
The major and minor cross matching is the two types of cross-matching tests. If major cross matching is done, 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 cells may attack donor cells and reject them. In the event that there is a major cross-match incompatibility, transfusion shouldn’t be done. For a minor cross-match test, the red cells of the recipient are compared with the serum of the donor. If there is a minor cross-match incompatibility, only parts of the donor’s blood can be given to the recipient.
A healthy animal with no history of metabolic or heart disease or seizures, has lean body weight (greater than 50 kg), and is 1-7 years of age is a potential donor. In addition, they should not be on any medication (except heartworm and parasite meds), have a good temperament, have been neutered and nulliparous, have jugular veins that are easily visualized and palpated and should have constant vaccinations. The Greyhounds are ideal blood donors due to their amenable disposition and high PCV.
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.
There is no preparation before going to the donation center and no fasting is required. Donor dogs are not sedated and the donation itself takes less than half an hour. The dog is welcomed in and lifted onto a table. Blood is taken from the jugular vein, which is a large vein in the neck. A small patch of hair on the neck is shaved to expose the skin right over the vein. The area is then swabbed with alcohol and a needle is inserted into the vein. Blood goes into the needle, through a tube, and then into the collection bag. After the blood is collected, pressure is applied to stop any bleeding and the donor is then lifted off the table. There might be a mild bruising 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.
As soon as they have made their donation, animal donors are compensated with various gifts and treats. They may be rewarded with a tag that identifies him or her as a blood donor, edible rewards that may include dog biscuits, a jar of baby food, a can or a bag of dog food, brand new toys and cool donor bandanas.
After the collection, the different blood components - red cells, plasma, and platelets will be separated. Anemic recipients are given red cells. Plasma builds up blood volume, thus it is given to animals that are not making enough or are losing large amounts of protein. For those recipients whose platelets are depleted or dysfunctional, they are given platelet-rich plasma.
Now, there several animal blood banks that supply blood products to Veterinary hospitals. Fortunately, dog owners have a positive response to the plea for blood donations. Every year, the animal blood bank processes roughly 2,000 units of blood donated by dogs. The donated blood is then brought in to the bank at the Veterinary hospital and to the bank’s bloodmobile, which visits Veterinary clinics and kennel clubs.
Some animal blood banks depend solely on the generosity of pet owners who enroll their dogs in canine blood donor programs and take them to their scheduled appointments. Animal blood banks hold drives to encourage animal blood donations, just like what the Red Cross and other health organizations do.
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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