Blood groups Flashcards

1
Q

How are blood groups determined

A

according to antigens expressed on the surface of erythrocytes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

what are alloantibodies

A

specific antibodies directed against erythrocytes antigens present in the same species but not in the individual producing the antibody

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Describe 3 ways alloantibodies can occur

A

Naturally in some species (cats) through sensitization by birth of foal with mismatched blood group, through sensitization with mismatched blood transfusion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is DEA

A

dog erythrocyte antigen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What are the 3 blood groups in cats

A

A, B and AB

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What happens if type B cats recieve type A blood

A

Intravascular haemolysis of type A donor blood, may be fatal, rapidly occuring

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What happens if type A cats recieve type B blood

A

Extravascular haemolysis, mild signs will take a few days

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

alloantibodies in type A cats

A

anti-B at a low level but it is very common

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

alloantibodies in type B cats

A

anti-A at a high level but it is less common

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

alloantibodies in type AB cats

A

non but it is very rare

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

name the horse blood groups

A

A, C, D, K, P, Q, U

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What does blood testing in dogs do

A

testing to see if the dog is DEA 1.1 positive or not

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Why do we test dogs for DEA 1.1

A

Because this is the most immunogenic of dog erythrocyte antigens

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Dscribe blood testing in cats

A

tests for all 3 cat blood groups

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What does blood group testing show

A

antigen pattern on the erythrocytes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is oxyglobin

A

chemically modified haemoglobin of bovine origin

17
Q

How do you know how much blood to transfuse into a animal

A

2ml of blood per kilo of weight will raise the PCV by 1%

18
Q

Why do we do a blood transfusion

A

provide support
correct deficiencies
control disease

19
Q

Why do we want dog donors to be DEA 1.1 or 1.2 negative

A

because they are very immunogenic

20
Q

How much blood can you collect from donors

A

10% of their total blood volume

21
Q

List the criteria for canine blood donors

A
Healthy
lean body weight under 25kg
1-8 years old
no previous pregnancies and females should be neutered
PCV >35%
vaccinated 
wormed
22
Q

List the criteria for feline blood donors

A
Healthy
lean body weight of less than 4.5kg 
1-8 years old
no previous pregnacies and females should be neutered
PCV>35%
vaccinated
wormed