Hipotalamo-hipofisis Flashcards

1
Q

Valor de prolactina que define hiperprolactinemia

A

> 25 microgr/l

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2
Q

Niveles de prolactina que son diagnostico de adenoma hipofisario productor de prolactina

A

PRL >250 microgr/l

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3
Q

Niveles de PRL >100 microgr/l en ausencia de embarazo, a que se puede deber?

A

Microprolactinoma

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4
Q

Tratamiento de primera elección en prolactinomas

A

Agonistas de dopamina (Bromocriptina, Carbegolina, Quinagolida)

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5
Q

Tecnica quirúrgica de elección en prolactinomas resistentes a agonistas dopaminergicos

A

Resección transesfenoidal

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6
Q

Causa mas frecuente de acromegalia

A

Adenoma hipofisario productor de GH

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7
Q

Pruebas a realizar ante la sospecha de acromegalia

A

Niveles elevados de IGF-1 para edad y sexo

Niveles de GH a las 2hrs de sobrecarga oral de glucosa >1microgr/L

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8
Q

Tratamiento medico de eleccion en acromegalia

A

Analogos de somatostatina (octreotida)

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9
Q

Síndrome de insensibilidad a la GH

A

Enanismo de Laron

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10
Q

Gold standard para el diagnostico de enanismo hipofisario

A

Hipoglucemia insulinica

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11
Q

Defecto campimetrico mas frecuente de adenomas hipofisarios

A

Hemianopsia bitemporal

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12
Q

Necrosis hipofisaria que aparece cuando el parto se complica con hemorragia intensa e hipotension

A

Sindrome de Sheehan

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13
Q

Manifestación primordial del sindrome de Sheehan

A

Incapacidad para la lactancia por ausencia de prolactina

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14
Q

Deficit de una o varias hormonas hipofisarias

A

Hipopituitarismo

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15
Q

En que consiste la diabetes insipida central

A

Falta de liberación de la ADH por defectos de las neuronas secretoras de ADH de la neurohipofisis o defectos de los osmorreceptores hipotalamicos

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16
Q

Sintomas principales de sindrome de secrecion inadecuada de ADH (SIADH)

A

Hiponatremia, hipoosmolalidad plasmatica