Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

OB > Chapter 6 - Antepartal Tests > Flashcards

Chapter 6 - Antepartal Tests Flashcards

1
Q

Screening

A

not definite

-designed to ID those who are NOT affected by a diasease or abnormality

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Diagnostic Tests

A

give a definite yes or no re if fetus is normal or abnormal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Types of Screening Tests

A
  • AFI
  • BPP
  • CST
  • daily FKC
  • multimarker screening [AFP, triple/quad marker)
  • NST
  • ultrasonography
  • nuchal translucency
  • umbillical artery doppler flow
  • VAS
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Types of Diagnostic Tests

A
  • amniocentesis
  • CVS
  • MRI
  • PUBS
  • ultrasonography
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

types of biophysical assessments

A
  • ultrasonography
  • umbilical artery doppler flow
  • MRI
  • *alll screen, not diagnstc
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Amniocentesis

A

needle is inserted thru abdominal wall to get amniotic fluid

  • 15 20 wk
  • diagnostic for cell growth + chromosomal
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Amniocentesis

results

A
  • high bilirubin= hemolytic disease
  • pos culture= infectn
  • L/S > 2:1 is mature lungs
  • L/S < 2:1 immature, risk for RDS
  • pos PG= mature lungs
  • neg PG = immature
  • LBC>50K= mature lungs
  • LBC<50K= immature
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Amniocentesis risks

A
  • loss
  • trauma to fetus/placenta
  • bleed/leak of amnio fluid
  • preterm labor
  • mom infectn
  • Rh sensitization bc risk for blood mixing
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

PUBS percutaneous umbilical blood sampling

A
  • removal of fetal blood fr umbilical cord
  • diagnostic test for metab, hematologic, disorders, fetal infectn, fetal karyotyping
  • 18 wks
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

PUBS risks

A
  • loss
  • trauma to fetus/placenta
  • bleed/leak of amnio fluid
  • preterm labor
  • mom infectn
  • Rh sensitization bc risk for blood mixing
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Types of maternal assays

A
  • AFP/MSAFP
  • Triple Marker Screen
  • Quad Marker Screen
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Alpha-FetoProtein [AFP]
aka
Maternal Serum AFP [MSAFP]

A

AFP is a glycoprotein produced by the fetal liver, GI tract + yolk sac in early gestation

  • screening tool for NTD + ventral wall defects
  • 15-20 wks
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

high levels of AFP

A
  • NTD
  • anencephaly
  • omphalocele
  • gastroschisis
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

low levels of AFP

A

-trisomy 21 aka down syndrome

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

abnormal AFP findings will require additional testing such as…

A
  • amniocentesis
  • CVS
  • ultrasonography
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

AFP has a high risk for…

A

false positives

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Triple Marker Screen/Quad Marker Screen

A
  • triple: AFP, hCG, + estriol
  • quad: +inhibin A
  • tests for trisomy (down syndr) + NTD
  • 15-16 wks
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

high levels of hCG + inhibin A

A

trisomy 21 (down syndrome)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

low levels of estriol

A

Down syndr

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Fetal Kick Count FKC

A
  • kicking starts at 16-20wk
  • utilized after 28 wks
  • palpate ab + track mvmt for 1-2 hrs
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

FKC norm + abnorm

A

norm: 10+ w/in 2 hrs; 4+ in 1 hr
abnorm: less than 4 in 4 hrs, contact HCP

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Non Stress Test

A

monitors FHR pattern + acceleration to assess oxygenation

-monitor for 20-40 min

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

norm/reactive NST

A

2 or more accells in 20 min

<32wk, 2 accells (10 bpm + 10 secs) in 20 min period

24
Q

nonreactive NST

A

no sufficient FHR in 40 min

25
Q

nonreactive NST should be followed up w…

A

ultrasound or BPP

-give juice, reposition, VAS

26
Q

presence of repetitive variable decel that last ____ requires further assessment of ____

A

> longer than 30 sec

amniotic fluid or prolonged monitoring

27
Q

vibroacoustic stim VAS

A

used when NST is nonreactive

-repeated in 1 min intervals for 3 times

28
Q

VAS is CI in…

A

deceleration or bradycardia

29
Q

reactive VAS

A

2 or more accells in 20 min

<32wk, 2 accells (10 bpm + 10 secs) in 20 min period

30
Q

contraction stress test CST

A

fka oxytocin challenge test

  • assess ability to maintain FHR in response to UC in women w nonreactive NST at term
  • screens risk during delivery
31
Q

CST procedure

A
  • monitor FHR for 20 min

- if no spontaneous UC, then stim nipples for 10 mins (to produce oxytocin) or admin IV oxytocin

32
Q

normal/negative result in CST

A

no significant var.decel or no late.decel in 10 min strip w 3 UC

33
Q

positive results in CST

A

late decel w half of UC

34
Q

pos result in CST is linked w…

A
  • incr fetal death
  • fetal growth restriction
  • lower 5 min apgar score
  • c section
  • need for neonatal resuscitation
35
Q

admin of oxytocin during CST places mom at risk for..

A

tachysystole

-more than 5 UC in 10 min

36
Q

AFI

A

screening to measure volume of amniotic fluid

-based on fetal urine production

37
Q

in prolonges fetal hypoxemia…

A

blood is shunted away fr kidneys to other vital organs

|&raquo_space;decr in amniotic fluid production

38
Q

norm/avg AFI

A

8 - 24 cm

39
Q

low AFI

A

less than 5 cm

  • oligohydramnios
  • incr prenatal mortality
40
Q

high AFI

A

more than 24 cm

  • polyhydramnios
  • NTD, GI obstruction, or hydrops
41
Q

BPP

A

30 min ultrasound screening for fetal status w NST

42
Q

BPP asses 5 variables

A 
1 FHR reactivity
2 fetal mvmt
3 tone
4 breathing
5 amniotic fluid vol
43
Q

BPP mvmt score

A

2: 3+ trunk/limb mvmt
0: less than 3

44
Q

BPP tone score

A

2: 1+ active extension + return to flexion
0: absent mvmt

45
Q

BPP breathing score

A

2: 1+ breathing lasting 30 sec
0: absent breathing or less than 30s of sustained breathing

46
Q

BPP amniotic fluid

A

2: at least one pocket measures 2cm
0: absent pocket

47
Q

NST in BPP score

A

2: reactive
0: nonreactive

48
Q

BPP scoring results

A

8/10: reassuring
6/10: equivocal, may need more testing
4/10: non-reassuring, needs more eval or delivery
2/10: immediate delivery

49
Q

nuchal translucency

A

checks fluid on neck

  • 18 wks
  • incr risk for chromosomal disorders
50
Q

abdominal ultrasound requires….

A

full bladder

51
Q

fetal ultrasound

A

to obtain info on:

  • gestatl age
  • growth/anatomy
  • amt amniotc fluid
  • placentl sytat
  • nuchal transluscency
52
Q

is fetal ultrasound invasive?

A

no,

noninvasive, no risks, + accurate

53
Q

MRI purpose

A

to check tissue, organ, vasc structure

54
Q

MRI requires…

A

iodine contrast. drink lots of fluid

-supine w left lateral tilt to prevent hypotension

55
Q

Doppler flow studies

A

noninvasive screening to assess BF to placenta

-calculated by using difference bw sys vs diastole flow

56
Q

umbilical artery doppler results is considered abnormal if..

A 
sys/dias ratio is above 95th percentile for age
or
above 3.9
or
en-diastole flow is absent or reversed

OB (18 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions