Card Set Information
Indications for Fetal monitoring
↓ fetal movement
What can be measured with external monitoring (Tocotransducer)?
Frequency of uterine contractions only. Not intensity
What needs to happen for the placement of an internal fetal heart monitor (Spiral electrode)?
Dilation and rupture of membranes
What uterine measurements are seen in active labor?
5-15 mm Hg
INTeNSITY 50-75 mm Hg
Define and give causes for fetal tachycardia
FHR >160 for
Loss of PSM activity
Fetal anemia or hypoxia
When is fetal tachycardia an ominous sign
Define and give causes for fetal bradycardia -
Decreased from baseline X10 minutes (<120 or 30 drop from baseline)
Fetal hypoxia from
Maternal hypotension or hypothermia
What is variability indicative of?
Normal neurological control of HR
(Balance between SYM and PSM systems balance)
Begins prior to contraction peak
Recovers with contraction
Vag exam or fundal pressure
Begins late -
at or after peak
recovers after contraction ends
Indicates hypoxic stress, metabolic acidosis
Seen c strong contraction
Causes of Late Decels
How long is a prolonged decel
>90 seconds - fetal survival poor if not managed
What is the criteria for a
(Best time is late in evening: baby more active)
2 - 15bpm
Oxytocin Challenge Test or
Contraction Stress Test criterion
moderate contractions in
Oxytocin IV or nipple stim until contractions begin
When is CST ordered and what constitutes healthy/compromised?
CST is ordered when there is a non-reactive NST
Healthy CST is with a stable FHR and
No late decels
Compromised with late decels
What are the indications for fetal Ultrasound?
amniotic fluid level
What are indications for Ultrasound for mom?
evaluate vaginal bleeding
R/O molar pregnancy
What are AFI measurements for:
NL, Oligo, and Poly
What problems are associated with Polyhydramnios?
GI tract obstruction
What are consequences of oligohydramnios?
Restricted fetal movement
Impaired lung development, compression
Cord compression (inadequate circulation)
What is late amniocentesis used to detect?
Fetal Lung Maturity
(inadequate surfactant = RDS)
What is scoring for the L/S ratio?
2 or > = mature lungs
at 1.5 = 50% incidence of RDS
<1.5 = 73% incidence of RDS
When does fetal breathing become regular and what does it demonstrate?
Fetal breathing becomes regular at 20-21 wks and this demonstrate
intact neurologic control
BIOPHYSICAL PROFILE (to test CNS functioning) is composed of what
Scoring is 2 or 0 for each category. Max 10
What must happen for a score of 2 in each category of BPP?
(>30sec) in 30 min
in 30 mins
limb or trunk extension and back to flexion
: at least 1 pocket =
BPP Scoring management
8 or 10:
10 NL low risk. 8 NL.
Deliver if Oligo
Suspect chronic asphyxia
>36 wks - deliver.
< 36wks repeat
Suspect chronic asphyxia
>32 wks deliver, <32 wks repeat
Strongly suspect chronic asphyxia -
Extend test to 120 minutes
. If persistently