Blood Types (ASAN002/17)

Question 1

Canine Blood Types

Answer 1

Over 15 canine blood groups have been described.\nOnly 8 types are recognised at international standards.\nAcronym DEA & a number are used to identify canine blood type.

Question 2

DEA

Answer 2

Dog Erythrocyte Antigen

Question 3

Recongised Canine Blood Types:

Answer 3

DEA – 1.1\nDEA – 1.2\nDEA – 3\nDEA – 4\nDEA – 5\nDEA – 6\nDEA – 7\nDEA – 8

Question 4

Most important canine blood type:

Answer 4

DEA 1.1

Question 5

DEA 1.1 +ve Canines

Answer 5

33 – 45 %\nConsidered to be Universal Recipients– can receive any blood type without fear of life–threatening transfusion.

Question 6

DEA 1.1 negative Canines

Answer 6

Considered to be Universal Donors\nDEA 1.1 neg dogs should NEVER be given DEA 1.1 +ve blood.

Question 7

First blood transfusion –

Answer 7

Transfused cells have a shortened life span\nAlloantibodies will be formed – making the dog forever sensitive to DEA 1.1 blood\nIf another blood transfusion is given, life–threatening reactions can occur.

Question 8

Alloantiboidies

Answer 8

Formed at first blood transfusion.\nIs one that naturally occurs against tissues (e.g. blood cell proteins) from an animal of same species.\nNaturally occurring means they don’t need to have been previously exposed to the antigen.

Question 9

Feline Blood Types

Answer 9

Identified as:\nA\nB\nAB (extremely rare)

Question 10

Must blood type cats prior to transfusion.

Answer 10

They will have alloantibodies against the other blood type.

Question 11

Type B cats

Answer 11

Have strong naturally occurring antibodies against Type A blood.\nEven a small amt (1ml) can cause a fatal reaction.

Question 12

Type A cats

Answer 12

Have weak alloantibodies against Type B cats.\nIf Type B blood is given to Type A cat, the half–life of RBC’s is reduced & the transfusion is clinically ineffective – the RBC’s functional time is so short (2days).

Question 13

Type B – most common breeds:

Answer 13

British Shorthair = 40%\nCornish Rex = 34%\nDevon Rex = 41%

Question 14

Type A – breeds found to be nearly 100% this type:

Answer 14

Siamese\nBurmese\nTonkinese

Question 15

Prior to blood transfusing cats:

Answer 15

Cats must always be typed &/or cross matched prior to transfusion.