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Ob/gyn🤰👩🏼‍🍼 > Antepartum Fetal Surveillance > Flashcards

Antepartum Fetal Surveillance Flashcards

1
Q

The primary goal of antepartum surveillance is to?

A

-identify fetus at risk for intrauterine death or neurological disease
-improve neonatal outcomes
-plan for fatal assessment
-fetal information and growth evaluation

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2
Q

Maternal indication for antenatal surveillance ?

A

Chronic heart disease
Chronic renal disease
Hypothyroidism
Diabetes
Symptomatic heamoglopinopathy

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3
Q

What are the placental indication for antenatal surveillance?

A

Antiphospholipid anti body syndrome
Sle
Pregnancy induce hypertension
Thrombophillia
Placental anomalies

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4
Q

What are the fetal indication for antenatal survillance ?

A

Decease fetal movement
Amniotic fluid abnormality
Post term pregnancy
Microsomia
Multiple pregnancy
Iugr

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5
Q

When to initiate fetal survillance ?

A

32-34 weeks

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6
Q

Fetal movement reassurance ?

A

10 within 12 hours during normal activity
10 within 2 hours at rest

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7
Q

Fetal movement are highest at which time and week ?

A

28-32 at evening

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8
Q

At still birth fetal movement will stop after ??

A

12-24 hour

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9
Q

Non stress test study the relationship between ?

A

Changes in heart rate according to fetal movement

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10
Q

Components of non stress test ?

A

Acceleration
Deceleration
Fetal heart baseline
Beat to beat variability

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11
Q

The hypothesis of the non stress test is ?

A

The heart rate of a non acidotic fetus should accelerate in response to movement

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12
Q

The heart rate of the fetus is controlled by ?

A

Sympathetic system -responsible for acceleration
Parasympathetic - responsible for beat to beat variability

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13
Q

Reactive non stress identified as ?

A

When we have 2 or more fetal heart rate acceleration reaching a peak of 15 bpm above the base line foe 15 seconds to return within 20 minutes

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14
Q

Non reactive non stress test is when ?

A

We don’t have acceleration over a 40 minutes

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15
Q

Causes for non reactive non stress test ?

A

Fetal immaturity
Maternal smoking
Fetal asleep

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16
Q

The stress test is preformed by giving ?

A

Oxytocin infusion until we have 3 contractions with in 10 minutes .

17
Q

The stress test study the relation between ?

A

Fetal heart rate in responde to induce contraction to unmask he placental poor function

18
Q

Hypothesis of stress test ?

A

Uterine contraction could lead o hypoxia in the fetus which can lead to fetal heart deceleration .

19
Q

Negative contraction stress test outcomes ?

A

No deceleration
Normal baseline

20
Q

What is positive contraction stress test ?

A

When we have deceleration in more than 50% of induced contraction

21
Q

We considered that we have deceleration during the contraction stress test when ?

A

We have drop n heart rate more than 15 below the base line per 15 sec

22
Q

The hypothesis of biophysical profile test ?

A

Multiple parameters of fetal wellbeing are better protector of outcomes more than single parameter .

23
Q

The biophysical profile is great indicator for ?

A

Fetal acidity due to chronic or acute hypoxia

24
Q

Factors affecting the result of the biophysical profile ?

A

-labor
-artificial rapture of membrane
-steroids
-magnisum
-fetal a sleep
-early gestation age
-late gestation age

25
Q

On biophysical examination fetal breathing activity is considered normal when ?

A

We have one or more episodes of breathing for 30second of breathing intermittent with in 30 minutes
Get 2 scores

26
Q

Normal fetal tone on biophysical test /

A

1 or more extension itch rapid back to flexion

27
Q

The modified biophysical profile was developed for ?

A

Reduce the time needed for testing

28
Q

The factors that has been assessed in the modified biophysical profile

A

Amniotic fluid index
Deepest vertical fluid
Non stress test

29
Q

Doppler velocimetry is used to assess ?

A

Blood flow velocity in maternal and fetal circulation .
Non invasive

30
Q

Artery that are toasted during Doppler velocimetry ?

A

Umbilical artery
Umbilical vein
Middle cerebral
Ductus venous
Uterine artery

31
Q

The uterine artery Doppler velocimetry indicate

A

Resistance of placental circulation
Resistance fall during pregnancy due to increased in stem villous cells

32
Q

Umbilical artery Doppler velocimetry indicate ?

A

Placental resistance

33
Q

The umbilical artery asses placental resistance by measuring ?

A

End diastolic flow

34
Q

What is the AEDV?

A

Absent end diastolic velocity due to. Placental insuficancy and increase in placental resistance

35
Q

What is the REDV ?

A

Reverseend diastolic velocity due to severe placental insuficancy

36
Q

Middle cerebral artery Doppler is used to indicate ?

A

Fetal anemia through end systolic velocity

37
Q

Umalical Doppler is continuous in pattern after week 15 of gestation but it become pulsatile due to ?

A

Cardiac dysfunction due to fetal growth. Restriction and increase after load

Ob/gyn🤰👩🏼‍🍼 (9 decks)

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