CORD/ ALL THAT 2 Flashcards

1
Q

Velamentous and marginal cord insertions is when

A

When the cord inserts into the membranes and not the placental disc.

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2
Q

Velamentous and marginal cord insertions identified when and when is the normal routine check for it

A

10 weeks and at 11-14 weeks

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3
Q

At birth what should occur with vasa previa

A

elective Caesarean section should be offered prior to the onset of labour

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4
Q

what is most likely with vasa previa

A

premature delivery

given corticosteroid to promote fetal development

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5
Q

Umbilical arterial Doppler assessment is used in surveillance of fetal well-being when

A

3rd trimester

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6
Q

Abnormal umbilical artery doppler is a marker of

A

uteroplacental insufficiency and consequent IUGR or suspected pre-eclampsia.

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7
Q

Umbilical artery Doppler assessment has been shown to improve

A

perinatal mortality and morbidity in high risk obstetric situations

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8
Q

NORMAL umbilical vein doppler flow

A

monophasic non-pulsatile flow pattern with a mean velocity of ~10-15 cm/s.

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9
Q

The presence of pulsatility implies

A

pathological state

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10
Q

when is there pulsatillity in umbilical vein (2)

A

Early in pregnancy: up to ~13 weeks gestation

when it is known chromosomally abnormal fetus

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11
Q

Umbilical cord prolapse happens when

A

umbilical cord precedes the fetus’s exit from the uterus

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12
Q

fetal membranes consists of

A

fused amnion and smooth chorion = amniochorionic membranes.

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13
Q

fusion of membranes begins ____ and completes _____

A

1st trimester and completes week 20

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14
Q

elevation or bulging of amniochorionic membrane is associated with

A

placental abruption and subchorionic hematoma

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15
Q

what is Premature rupture of membranes (PROM)

A

Rupture of the amniochorionic membrane prior to onset of labour.

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16
Q

what is concern id PROM is longer than 24 hours without birth

A

chorioamnionitis,

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17
Q

Chorioamnionitis may cause:

A

Fetal or maternal death

18
Q

If PROM occurs at less than 32 weeks

A

Pregnancy is usually continued under very close assessment because the fetus is immature and high risk for neonatal respiratory distress syndrome.

19
Q

If PROM occurs at more than 32 weeks

A

Labour may be induced or a C-section can be performed.

20
Q

amniotic fluid is

A

fluid in the amniotic cavity

21
Q

Normal amount of amniotic fluid is important for

A

normal fetal development and growth.

22
Q

Amniotic fluid is a solution consisting of:

A

Desquamated fetal epithelial cell
Organic and inorganic salts
Proteins, fats, enzymes, hormones, carbohydrates, and pigments
Later urine and meconium are added

23
Q

amniotic fluid function

A

fetus can move, grow and develop without pressure.

maintains the environment temperature and helps maturation of fetal lungs

24
Q

Evaluation of AFV is a key component of

A

fetal biophysical assessment

25
Q

After 16 W, _______ production is the major source of amniotic fluid

A

fetal urine

26
Q

measurement technique for amniotic fluid

A

Longest single pocket (free of umbilical cord and fetal small parts)
Vertical depth of the pocket

27
Q

normal amniotic fluid measurement

A

2-8cm

28
Q

amniotic fluid index obtained by

A

by measuring the vertical depth (mm) of the largest cord-free AF pocket in the four quadrants of the uterus and the sum of four measurements
AFI = Q1 + Q2 + Q3 + Q4

29
Q

oligiohydraminos defined as

A

It is defined as more than 2 standard deviation (2 SD) below the mean for the specific GA.

30
Q

The _____th percentile value is recommended for screening

A

5th

31
Q

oligojudraminos associated with (3)

A

Maternal drug intake
IUGR
Urinary tract anomalies

32
Q

polyhdraminos is

A

Abnormal or excessive amount of amniotic fluid

33
Q

normal cervical length is greater than

A

30mm

34
Q

cervical incompetence aka

A

cervical insufficiency

35
Q

cervical incompetence is

A

A medical condition in which a pregnant woman’s cervix begins to dilate (widen) and efface (thin) before her pregnancy has reached term.

36
Q

cervical incompetence may cause

A

miscarriage or preterm birth during the 2nd and 3rd trimesters.

37
Q

another sign of cervical incompetence is

A

funnelling at the internal orifice of the uterus

38
Q

what is cervical funneling

A

Opening of the internal cervical os with protrusion of the amniotic sac into the cervical canal.

39
Q

normal length of umbilical and average

A

30-90cm and 55cm average

40
Q

cervical funneling is probably normal after ____ weeks

A

32