i used to work for high risk perinatologist & I was required to do this in all 3 areas being discussed #1 free floating #2 placental insertion #3 fetal cord insertion, but havent worked there in years so not sure now
thanks
in my views s/d ratio/PI/RI at free floating umblical cord area doppler tracing is excellent because at placental site there are variations in umblical cord insertion in placenta which may be closely related to chromosomal disorders like trisomy 13/…
we had two studies about S/D RATIO and site of umbilical artery for assessment---the results favored FREE LOOP and what Calan says-- PI & RI are better tahn S/D ratio.
I can send that studies (if needed).
one of these studies is
OBJECTIVE: .The obje…
I agree with Mario Perez, Kathi Borok, and Jacques Abramowicz. The literature reports different ways to sample the umbilical artery. The important point to remember is that the last part of the UA to experience deterioration such as reversed flow is…
I agree with Mario Perez. The placental end of the cord is the correct location: more stable, reproducible and really reflecting placental resistance as opposed to placenta + whichever portion of the cord between your sampling point and the placenta…
Kerry, for some detailed discussion of Doppler sonography of the fetus and the umbilical cord, consider checking out the AIUM DVD/CD Rom "New Developments in Fetal Doppler Sonography." Topics on the disc include "Three-Dimensional Fetal Vascular Ana…
I read some reasons to place the sample near the placental insertion, one is the steadiness, the fetus does no "kick" the cord, so you can get better images and better doppler recording., Second, is being said that the data collected near the placen…
When performing umbilical cord Doppler, should you sample at the fetal insertion, placental insertion, or a free floating portion of the cord? I have heard different things and would like some clarification. The most recent article I have been able…
I agree with Silvia. According to Callen's textbook and from what I have seen in practice, along with a hydropic yolk sac, a calcified yolk sac is typically a bad sign. You should definitely follow up to confirm that the pregnancy is progressing.
The best model for NT is for it to be done in the private OB office. Slowly but surely, generalists are coming around to the idea of doing NT risk adjustments in their offices. There is nothing magical about doing risk assessments with NT and serum…
Thanks to everyone who has replied so far! I appreciate the thoughts and advice. It has given me alot to think about. Thanks again and keep the advice coming!
Great advice. I have been in the field a long time working for private physicians in OB/GYN and have recently addressed the issue of NT. My physicians at this time do not want the added responsibility of the first trimester bloodwork and NT review.…
The Gynecologic Ultrasound Community consists of professionals involved in the sonographic imaging of the female pelvis, including the fallopian tubes, uterus, and ovaries.
You have a very interesting point to discuss here. I’ve been working with a group of Perinatologists for almost 10 years and have been practicing ultrasound for approximately 20 years. During that period of time I’ve seen OB ultrasound evolve tremen…