Placenta Flashcards

1
Q

Funciones de la palcenta

A

Transporte-intercambio
Endocrina
Inmunologica
Diagnostica

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2
Q

Tipos de mecanismos de transportes placentarios

A
Difusion simple (agua, co2,o2, electrolitos)
Difusion facilitada (lactato e Hdc)
Difusion regulada (glucosa)
Transporte activo (aminoacidos) 
Pinocitosis (albumina, fosfolipidos igG)
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3
Q

Desde qué estructura se produce la placenta?

A

Sincitiotrofoblasto

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4
Q

A partir de que dia se produce la vascularizacion de las vellosidades terciarias?

A

Dia 21

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5
Q

Que funcion tiene el lactogeno placentario?

A

Suministrar glucosa al feto

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6
Q

Parología de la placenta

A
Retencion placentaria
Acretismo placentario
Inversion uterina 
Hemorragia del alumbramiento
Embolia del liquido amniotico
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7
Q

Principal causa de histercomia obstetrica?

A

Acretismo placentario

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8
Q

Que parte de la placenta se pierde cuando su insercion es acreta?

A

La decidua basal

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9
Q

Factores de riesgo del acretismo placentario

A

Edad avanzada, paridad, cirugias (cesarea o miomas), infecciones, acretismo previo.

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10
Q

En cuanto al tiempo: la hemorragia posparto precoz ocurre___ y la hemorragia tardai o puerperal _____

A

Primeras 24 horas tras parto

Entre el primer dia y la sexta semana de puperio

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11
Q

Causas de hemorragia placentaria

A

Atonia uterina
Rotura uterina y desgarros obstetricos
Retencion de restos placentarios
Coagulopatias

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12
Q

El balon de bkri y la tecnica de B-lynch se producen cuando hay…

A

Una hemorragia placentaria

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13
Q

Un hallazgo ecocardiografico de placenta acreta

A

Perdida de espacio anecoico retroplacentario

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14
Q

Que etiologia se relaciona con la inversion uterina?

A

Excesiva traccin del cordon de la placenta o maniobra de credé energica

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15
Q

Las 4 T son las causas de la rotura uterina y son…

A

Tono, tejido, trauma, tastorno de la coagulacion

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