Hemofilia Flashcards

1
Q

Tipo herencia

A

Recesiva ligada a X
30% mutaciones de novo

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2
Q

Prevalencia tipo A

A

1/5000

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3
Q

Prevalencia tipo B

A

1/30,000

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4
Q

Relacion A:B

A

1:6

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5
Q

Clasificación

A

-Leve: 5-40%
-Moderado: 5-1%
-Grave: -1%

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6
Q

Es la principal manifestación más común en casos severos

A

80% Hematrosis y sangrado prolongado en casos severos

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7
Q

Direccion de las rodillas

A

Genu valgo

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8
Q

Afecta articulaciones de un solo eje

A

Rodilla 44%
Codo 25%
Tobillo 15%
Hombro 8%
Cadera 5%

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9
Q

En la hemofilia grave aparecen sintomas entre:

A

8-12 meses

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10
Q

Hemorragias en hemofilia grave

A

-Hemartrosis 70 80%
-Musculos y tejidos blandos 2-10%
-Sangrados menores 10 5%
-SNC -5%

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11
Q

El sangrado espontáneo se presenta en:

A

-50% casos graves
Posterior a trauma y cirugías
-30% moderados
20% leves

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12
Q

Hemofilia Tipo A

A

Gen F8
Xq28
Mutaciones puntuales
-Cambio de sentido 85% (nuevo aa)
-Sentido equivocado (paro) 15%

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13
Q

Hemofilia Tipo B

A

GenF9
Xq27.1
Mutaciones puntuales
-2/3 sentido equivocado
-Deleciones

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14
Q

Dx y gravedad

A

-Pruebas de coagulación
-Fx

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15
Q

Hemofilia grave en mujeres:

A

-Sindrome de Turner
-Lyonización extensa
-Homocigotas

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16
Q

Dx prenatal

A

-PCR sangre materna (7-11)
-USG (11)
-Vellosidades (10-12)
-Amniocentésis (15-18)

17
Q

Tx Gold Estándar

A

Reposición del fx faltante, preferentemente de forma profiláctica

18
Q

Si hay sangrado muscular

A

Compresión vascular y neural

19
Q

Complicaciones del tx

A

-Hepatitis B y C
-VIH
-Anticuerpos (inhibidores) para fx infundido