Thalassemia Flashcards

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1
Q

What type of Disease is T ??

A

Autosomal recessive disorders

247 Z

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2
Q

Cause of T ??

A
  1. Reduction / Absent production of one or more of the globin chains

247 Z

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3
Q

Alpha T type ??

A
  1. 1 gene deletion = Silent carrier
  2. 2 gene d = A-T trait
  3. 3 gene d = HbH Disease
  4. 4 gene d = Hb Bart Hydrops fetalis

248 Z

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4
Q

Type of T ?

A
  1. Alpha T
  2. Beta T

248

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5
Q

Beta T type ??

A
  1. B T minor
  2. B T intermedia
  3. B T major / Cooleys anemia

248 Z

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6
Q

Alpha T chain damage ??

A

no alpha = A0
Reduced alpha = A -

248

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6
Q

Normal Hb chain distribution ??

A

2 alpha
2 beta

248 Z

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7
Q

Beta T chain damage >?

A

no beta= B0
Reduced Beta = A -

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8
Q

Alpha T manifestation ??

A
  1. Reduced / No A chain
  2. Excess B chain

248 Z

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9
Q

Reduced/No A chain in A T ??

A
  1. Hb A
  2. Hb A 2
  3. Hb F

248 Z

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10
Q

Beta T manifestation ??

A
  1. Reduced / No B Chain
  2. Excess A chain
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10
Q

Excess B Chain in BT ??

A
  1. HbH - B4
  2. Hb Bart- Gamma 4

248

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11
Q

Reduced / No B chain in B T&raquo_space;???

A
  1. Hb A - A2B2

248

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12
Q

Excess A chain in A T ??

A
  1. Hb A2
  2. Hb F
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13
Q

Clinical features of Silent carrier in AT ?

A

No anemia

248

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14
Q

Clinical features of A T Traits ?

A
  1. Mild anemia
  2. Inc RBC count

248

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15
Q
A
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15
Q

Clinical in HbH disease ??

A

Severe hemolytic anemia

248

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16
Q

MCH (-) In T is called ??

A

Hypochromia

16
Q

B T major / Cooleys anemia manifestation ??

A
  1. Mongoloid face - Expansion of the marrow in the malar bone
  2. Hepatosplenomegaly

248-249

16
Q

B T minor clinical features ??

A
  1. No anemia
  2. No symtoms

248

17
Q

Other features of BT&raquo_space;?? Major ??

A
  1. Severe anemia
  2. Jaundice
  3. Growth retardation
  4. Organ dysfunction
  5. Hblocck
  6. Hemosiderosis
  7. Chronic congestive heart failure

249

18
Q

MCV (-) IN T is called ??

A

Microcytosis

249

18
Q

RBC feature in PBF in T ??

A
  1. Hypochromic
  2. Microcytosis
  3. Anisocytosis
  4. Poikilocytosis
  5. Target cells
  6. Teardrop cells
  7. Fragmented cells
  8. Basophil stippling

249

19
Q

CBC result of T ??

A
  1. Hb = (-)
  2. RBC = (-)
  3. MCV= (-)
  4. MCH =(-)
  5. Packed cell V /Hematorcrit =(-)

249 Z

20
Q

WBC features in PBF In T ??

A

Mature & normal distribution

249

21
Q

Platelets in PBF&raquo_space;

A

Normal / +

249

22
Q

Confirmatory test of T ??

A
  1. HPLC
  2. Hb Electrophoresis

250

Zillur

23
Q

Iron profile in T ??

A
  1. Serum iron = (=/+)
  2. Serum ferritin = (=/+)
  3. TIBC
  4. Iron satutration
    All same

250

23
Q
A
24
Q

X ray findings in T ?

Guide 352

A
  1. Inc diploic space
  2. Hair on end apperance

352

25
Q

Cause of hepatosplenomegaly in T ??

352

A
  1. Haemochromatosis
  2. Compensatory extra medullary hemopoiesis

352

26
Q

Cause of anemia in T ??

A
  1. Intra medullary red cell destruction
  2. Dec lifespan of RBC
  3. Sequestration in spleen
  4. Folate deficiency
  5. inc plasma V
  6. Peripheral haemo dilution

352

27
Q

When S/S of T appesr ??

A

6 month
HbF replaced by HbA

352

28
Q

Liver manifestation in T ??

A
  1. Fe overload in kupffer cells as hemosiderosis
  2. Hepatocytosis

249 Z

28
Q

Cause of death in T ??

A
  1. Severe anemia
  2. Infection
  3. CHF
  4. Cirrhosis
  5. DM

352

29
Q
A
30
Q
A
30
Q
A
31
Q
A
32
Q

Prenatal diagnosis of T??

A
  1. CVS=Chorionic villus sampling
  2. Amniocentesis

1. 250

33
Q

Prevention of T ??

A
  1. Carrier screening
  2. Counselimg
  3. Prenatal Dx
  4. Interruption of pregnancy
  5. Public awarness

252

34
Q
A
35
Q
A
36
Q
A
36
Q
A