Hemoglobinopathies And Polycythemia Flashcards

1
Q

Alpha like globin

A

Chromosome 16

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2
Q

B like globin

A

Chromosome 11

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3
Q

Predominant hemoglobin in adults

A

Hgb A

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4
Q

Causes by impaired production of polypeptide chains

A

Thalassemia

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5
Q

Severe hypochromic, microcytic anemia, hepatomegaly

A

Major beta thalassemia

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6
Q

Probably the most common single gene disorder in humans

A

Alpha thalassemia

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7
Q

Complete absence of alpha chains

A

Barts hydrops fetalis

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8
Q

3 out of 4 alpha is missing

A

Hgb H

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9
Q

Most common hemoglobinopathy

A

Sickle cell trait AS

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10
Q

Found mostly among blacks

A

HbSS

Sickle cell disease

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11
Q

Positive for sickling test

A

Sickling disorder

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12
Q

Reduced plasma volume

A

Relative PV

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13
Q

An increase in HCT and RBC

Not total red cell mass

A

Relative PV

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14
Q

BM is erythroid hyperplasia

A

Absolute PV

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15
Q

Commonly used tracer for erythrocyte volume

A

51Cr

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16
Q

Bound to albumin and used to measure plasma volume

A

125 or 131I