Test 2 Flashcards
Baseline Fetal Heart Rate
110-160 bpm
3 types of variability with FHR.
Absent
→ We don’t want this
Minimal
Moderate
→ Predicts a well-oxygenated fetus with normal acid-base balance (at that time)
→ Says there is a good acid-base balance
Marked
What is an acceleration predictive of?
What does it reflect an absence of?
Predictive of adequate central fetal oxygenation
Reflects absence of fetal acidemia ( an umbilical arterial pH (UApH) of less than 7.0 and base deficit ≧12 mmol/L)
Early decels ________ the mother’s uterine contraction.
Mirrors
Early decelerations: Any intervention needed?
Nope!
Variable decelerations: Any intervention needed?
Yes, usually due to nuchal cord
ABRUPT drop, not gradual like earlies
Not in a pattern
- Reposition the client (side to side; knee-chest)
- Discontinue oxytocin (makes contractions stronger, maybe slow it down)
- Administer O2 via face mask 8-10 L/min → better perfusion to fetus
- Vaginal exam
- Amnioinfusion (if prescribed → when water has broken, puts fluid back in to give room for cord to stop compression.)
Late decelerations: Any intervention needed?
YAS. We don’t want to see this.
Drop of fetal heart rate is after the peak of the contraction; there is a pattern.
- Change maternal position (side-lying) → trying to get better profusion to the placenta. Do this first, it will help the other things work better.
- Discontinue oxytocin. Baby is not tolerating this, don’t want to stress them more.
- IV bolus (LRS 500 ml) to promote fetal oxygenation
- Administer O2 via face mask 8-10 L/min
- Notify provider
- Fetal spiral/scalp electrode for more invasive monitoring
- Plan for delivery and care of the neonate
What are VEAL CHOP?
V – Variable Decelerations → C – Cord Compression
E – Early Decelerations → H – Head Compression
A – Accelerations → O – OK
L – Late Decelerations → P – Placental insufficiency
How long does a nonstress test take?
20-40 minutes
What does a reactive nonstress test look like?
An increase in FHR by at least 15 beats over baby’s baseline for at least 15 seconds at least 2 times in 20 minutes
If under 32 weeks, only expect to see the FHR rise by 10 bpm/10 seconds
What does a nonreactive nonstress test look like? And what would the next step be?
- FHR that did not have sufficient accelerations
* Follow up with BPP or US
If nonstress test is not reactive, what should we do first?
Give preg person juice; baby might be sleeping
What is a nonstress test looking at?
- Looking at fetal movement and FHR accelerations
* This correlates with adequate oxygenation and shows that the ANS is functioning correctly
What are some reasons one would get a nonstress test?
High-risk preg, gestational HTN, HTN, diabetes, multiple gestation, trauma, bleeding, feeling of decrease in fetal movements, concern for placental problems.
Describe true labor contractions?
- True labor contractions occur at regular intervals and increase in frequency, duration, and intensity
- True labor contractions bring about changes in cervical effacement and dilation