Polyhydramnios - ANSWER-single MVP > 8 cm or AFI >24; 1% of pregnancies; 60%
idiopathic; multiple gestation, maternal diabetes, hydrops, anomalies, TORCH;
ass'd with cardiac/GI issues/renal issues
Oligohydramnios - ANSWER-single MVP < 2 cm or AFI < 5 at term (less than
5%ile); associated with FGR, placental abnormalities, urinary tract abnormalities,
post-term pregnancies, ruptured or idiopathic membranes
Autocorrelation - ANSWER-successive US waveforms at many points; current
technology which is more accurate at detecting FHR variability; controls artifact
sound waves
,Toco/tocotransducer - ANSWER-detects change in contour with contractions;
place at fundus or at area of maximum palpation; difficult to measure with
obesity, polyhydramnios
Fetal scalp electrode measures - ANSWER-R-R waves; still has issues with artifact;
risk of injury, measuring maternal HR in instance of fetal demise; rupture and
dilation required
IUPC - ANSWER-solid>fluid filled tips, measures mmHg and allows amnioinfusion;
issue with displacement, perforation, placental abruption
Intermittent auscultation - ANSWER-goal is baseline 110-160, +/-accels, no decels;
if present, put on continuous monitor min 20 minutes); cannot determine
variability or types of FHR decels
Active phase auscultation - ANSWER-q15 min for high risk up to q30min
Second stage auscultation - ANSWER-q5 min if high risk up to q15min
Fetal tolerance of labor - ANSWER-auscultate after a contraction x 30-60 seconds;
document rate, rhythm, accels, decels
Doppler vs. fetoscope - ANSWER-doppler uses autocorrelation and detects valve
closure; fetoscope listens through opening in heart wall?
, Signal ambiguity - ANSWER-confusing maternal and fetal heart rate; common with
repositioning, fetal movement, during pushing (maternal tachycardia); can occur
even with fetal demise due to FSE recording maternal blood flow through the
placenta
Suspect signal ambiguity - ANSWER-when there is lower baseline or >50%
contractions with accelerations (especially with pushing); verify and document
maternal heart rate via pulse oximetry
Halving/doubling - ANSWER-Halving occurs if FHR >180-200; may double if rate
<50
Normal blood flow pathway - ANSWER-Blood from maternal vein > intervillous
pool of maternal blood > umbilical vein (oxygenated blood)
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Nursewilliams29. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $17.99. You're not tied to anything after your purchase.