U.S. doctors online nowAsk doctors free
Maryville, TN
A 24-year-old female asked:

which fetal measurement holds accuracy the longest in later ultrasounds (ex. femur, bpd, hc, ac)?

2 doctor answers3 doctors weighed in
Dr. Rixt Luikenaar
Obstetrics and Gynecology 24 years experience
Ac: Measurements later in pregnancy become less accurate. Dating usually happens from your first ultrasound done. Sometimes the baby develops growth restriction. The measurement of the abdominal circumference is usually the first sign of that. The average of all measurements together can also show growth restriction or actually a large baby!
Dr. Bryan Treacy
Gynecology 35 years experience
Depends: Accuracy of fetal ultrasound measurements is technologist dependent. Based on what you are asking, however, the most accurate bone measurement by ultrasound would be the femur length.

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Personalized answers
Free
Talk to a doctor
$30 per visit with
membership

Similar questions

A 26-year-old member asked:

Unpredictable fetal movement?

2 doctor answers3 doctors weighed in
Dr. Ian Taras
Obstetrics and Gynecology 29 years experience
10 kicks/hour: 10 kicks/hour is a universal count, but its dependent on what is your normal and more importantly how far along you are. If you are 25 weeks, you may not have predictable fetal movement the way you may when you are 35 weeks. Check with your doctor.
A 39-year-old member asked:

Should I be concerned if I am not feeling fetal movements at 28 weeks?

2 doctor answers2 doctors weighed in
Dr. Padmavati Garvey
A Verified Doctoranswered
A US doctor answeredLearn more
No: You should talk to your doctor. Some women perceive movements less than others. This may be due to the position of the placenta. A more concerning scenario would be if the baby moved a certain amount all the time and suddenly stopped moving. You should talk to your doctor immediately if something like that happened.
A 40-year-old member asked:

What is fetal distress?

2 doctor answers4 doctors weighed in
Dr. Cassandra Ndiforchu
Obstetrics and Gynecology 49 years experience
Low fetal health: A decrease in fetal well-being can happen for several reasons. Fetal distress can occur during the pregnancy or during labor. The warning signs are a decrease in the usual daily level of movement, greenish material present in a sample of the amniotic fluid, a decrease in the heart beats on routine check or during a labor contraction.
Dr. Carla Enriquez
Pediatrics 50 years experience
Absent normal heart rate variation during labor could also be a sign, as well as persistent fetal tachycardia.
Sep 10, 2012
A 32-year-old member asked:

What are the effects of heroin on a fetus in the first trimester?

2 doctor answers4 doctors weighed in
Dr. Padmavati Garvey
A Verified Doctoranswered
A US doctor answeredLearn more
Difficult to say: Heroin use in the first trimester will either cause a full miscarriage or have minimal effects at all. This is essentially true of all toxic exposures in the first trimester that tend to kill the baby or not affect it at all. Heroin use for the rest of the pregnancy will likely cause addiction in the baby, stunted growth and increase risk of infections such as hepatitis, hiv, syphilis.
A 38-year-old member asked:

How will pericardial effusion affect the fetus?

1 doctor answer2 doctors weighed in
Dr. Nikolaos Zacharias
Maternal-Fetal Medicine 26 years experience
Hydrops.: Fetal pericardial effusions can lead to tamponade and worsening heart failure with hydrops and fetal loss. Depending on their cause they may be amenable to fetal interventions and/or early delivery at a tertiary care center.

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Personalized answers
Free
Talk to a doctor
$30 per visit with
membership
Last updated May 7, 2016

People also asked

Connect with a U.S. board-certified doctor by text or video anytime, anywhere.
$30 per visit with
membership

Disclaimer:

Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.