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FINALY > Transfusion > Flashcards

Transfusion Flashcards

1
Q

Which cells are capable of showing dosage?

A
  • Duffy
  • Rh (except for D)
  • Kidd
  • M / N
  • S / s
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2
Q

What is the positive frequency for the C antigen?

A

70 %

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3
Q

What is the positive frequency for the E antigen?

A

30 %

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4
Q

What is the positive frequency for the e antigen?

A

90%

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5
Q

What is the positive frequency for the c antigen?

A

80%

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6
Q

What is the positive frequency for the K antigen?

A

9 %

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7
Q

What is the positive frequency for the k antigen?

A

99.9 %

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8
Q

What is the positive frequency for the Kpa antigen?

A

2 %

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9
Q

What is the positive frequency for the Kpb antigen?

A

99.9 %

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10
Q

What is the positive frequency for the Fya antigen?

A

65 %

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11
Q

What is the positive frequency for the Fyb antigen?

A

83 %

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12
Q

What is the positive frequency for the M antigen?

A

78 %

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13
Q

What is the positive frequency for the N antigen?

A

72 %

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14
Q

What is the positive frequency for the S antigen?

A

55 %

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15
Q

What is the positive frequency for the s antigen?

A

89 %

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16
Q

What is the positive frequency for the Jka antigen?

A

77 %

17
Q

What is the positive frequency for the Jkb antigen?

A

73 %

18
Q

Which RBC antigen is difficult to find homozygous expression of?

A

Kell

19
Q

Which antibodies are IgM?

A
  • Lewis
  • I
  • H
  • M
  • N
  • P1
  • A
  • B
20
Q

Which antibodies are IgG?

A
  • Rh
  • Kell
  • Duffy
  • Kidd
  • S/ s
21
Q

Which antibodies are enhanced by enzyme treatments?

A
  • Kidd
  • Rh
  • I
  • P
  • Lewis
22
Q

Which antibodies are destroyed by enzyme treatment?

A
  • M
  • N
  • S
  • s (variable)
  • Duffy
23
Q

Which enzymes are used to treat antibodies panels?

A
  • Ficin
  • Papain
  • Trypsin
  • bromelin
24
Q

Anti-I is associated with which infection?

A

mycoplasma pneumoniae

25
Q

Anti-i is associated with which infection?

A

Infectious Mononucleosis

26
Q

Which antibody is most commonly associated with delayed HTR?

A

Kell

27
Q

An 80 year old patient who has been receiving regular transfusion every 3 months for the past 4 years, shows signs of a newly formed antibody. The patient has high titers but you get weak reactions across the board. What are you suspecting, and should you worry?

A

HTLA anti-b
- Not significant just a nuisance when determining presence of antibodies.

28
Q

Which phenotype red cell is more resistant to malaria?

A

Fy (a-b-)

29
Q

You discover an Anti-f in your patient and they require units. What units should you be giving them and why?

A

c negative units, because anti-f is formed in the presence of both e and c antigens. 98% of the population have anti-e meaning units negative of e is much more difficult to find. As long as the patient is only transfused with one or neither of the e/c antigens.

FINALY (4 decks)

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