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Obstetrics I > LE 3: Twins, Placenta Previa, Abruptio Placenta > Flashcards

LE 3: Twins, Placenta Previa, Abruptio Placenta Flashcards

1
Q

may result from 2 or more fertilization event OR single fertilization followed by “erroneous” splitting of zygote OR combination of both

A

Multifetal Gestation

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2
Q

inc. preterm birth compromised neonate survival inc. lifelong disability inc. infant mortality inc. congenital malformation inc. maternal morbidity (Pre-eclampsia, postpartum hemorrhage, periparturm hysterectomy, depression)

A

Multifetal Birth

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3
Q

virtually quadruplets are

A

born preterm

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4
Q

inc. rate of twin and higher order of multi-fetal births

A

infertility therapy

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5
Q

“Fraternal Twins”

A

Dizygotic Twins

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6
Q

maturation and fertilization of 2 ova in 1 ovulation

A

Dizygotic Twins

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7
Q

“Identical Twins”

A

Monozygotic twins

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8
Q

same genetic heritage, does not equally share protoplasmic material

A

Monozygotic twins

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9
Q

occurs at 1st 72 hours after fertilization

A

Diamnionic, Dichorionic twins

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10
Q

2 embryos, 2 amnions, 2 chorions

A

Diamnionic, Dichorionic twins

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11
Q

occurs at 4th and 8th day after fertilization

A

Diamnionic, Monochorionic twins

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12
Q

occurs at 8th day after fertilization

A

Monoamnionic, Monochorionic twins

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13
Q

uterine cavity is obliterated by fusion of decidua capsularis to the decidua parietalis

A

Superfetation

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14
Q

fertilization of 2 ova w/in the same menstrual cycle but not at the same coitus, nor sperm from same male.

A

Superfecundation

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15
Q

occurs at 13th day after fertilization

A

Conjoined twins

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16
Q

after embryonic disk is formed cleavage is incomplete

A

Conjoined twins

17
Q
A

Monochorionic
monoamnionic
conjoined twins

18
Q
A

Monochorionic
monoamnionic

19
Q
A

Monochorionic
diamnionic

20
Q
A

Dichorionic
diamnionic

“Fused placenta”

21
Q
A

Dichorionic
diamnionic

“Separated Placenta”

22
Q
A

A = Amnion

C = Chorion

23
Q
A

Monochorionic diamnionic twin pregnancy

24
Q
A

Dichorionic diamnionic twin pregnancy

25
Q
A

Fetus in fetu

26
Q
A

Parasitic

27
Q
A

Acardiac (TRAP)

28
Q
A

Conjoined

29
Q
A

Separate

30
Q
A

Rostral Omphalopagus

31
Q
A

Rostral Thoracopagus

32
Q
A

Rostral Cephalopagus

33
Q
A

Caudal Ischiopagus

34
Q
A

Lateral Parapagus diprosopus

35
Q
A

Lateral Parapagus
dicephalus

36
Q
A

Dorsal Craniopagus

37
Q
A

Dorsal Rachipagus

38
Q
A

Obstetrics I (13 decks)

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