The calculations can give an average weight consistent with these measurements, but can be off by as much as 1/2 to 1 pound when performed by an experienced sonographer. My bub was estimated 7lb4oz at 36weeks she was born 38weeks weighing 10lb4oz so it was way off. This action cannot be undone. Nope - he only weighed 7 lb 2 oz. The Pediatritian assessed him and said he looked to be 36 1/2 weeks. —Guest mommajean, swore no way a 10 pounder! Third trimester weeks, the ultimate checklist. His head is on the larger size, so that may have contributed to the over-estimation. I had an ultrasound at 36 weeks and baby was measuring 8lbs 11oz so the dr was talking about inducing me at 39 weeks so she wouldn't be too big for a vaginal delivery. I turned around and had a vaginal birth with my next baby who was over 8 lbs - so the weight wasn't an issue, it was my doctor's concern about the weight that made me have a c-section. Between weeks 37 and 40, your baby starts to descend into your pelvis in preparation for birth, so the measurement of fundal height begins to decrease. Create an account or log in to participate. I had him at 37 weeks 1 day and he was 6 pounds 13.8 oz. One study out of Israel showed ultrasounds that were done in the early third trimester (28-34 weeks) didn’t give an accurate estimate of the baby’s weight. hey i am pregnant of 37 weeks now i had a ultrasound in my 34 weeks she told me its girl or may be boy then she write a report to my doctor its girl its 100%accurate the result that i have a girl but i ffel that i am having a a boy There is no method of checking fetal size before delivery can provide more than an estimated fetal weight (EFW). My son was 9lbs even at birth. I did and she came out in one push... and I had a 2nd degree tear. I'm just wondering how accurate ultrasounds are for predicting weight. He came one day shy of 39 weeks and weighed 8 pounds, 4 ounces. He was a scrawny little guy, but healthy. So it was a off by a little. reviewed by our medical review board and team of experts. ... My last ultrasound was at 37 weeks they said she was 8.2 pounds. The placenta has reached its full size and is spread out like a plate. Ultrasound for fetal weight estimation is notoriously inaccurate for predicting the weight of babies. Estimated to be over 8.5 pounds... my baby was delivered 6lbs 6oz. They told me the 50th percentile babies weights at birth is approximately 8 pounds! She was born 2 days shy of her due date at 6lbs 9oz. "For a 9-pound baby, an ultrasound’s predictive accuracy … There’s no truly accurate way to determine an infant’s weight at 37 weeks until he emerges from the womb and is placed on a scale in the delivery room. How Big Is Your Baby at 37 Weeks? I guess it was a bit of a better guess with my second. —Guest LeahT. My ob was the one who measured the baby so I wonder how good she is at it. They said the ultrasound can be off by a pound in either direction. :). A lot of stress for no reason. So pretty close for us! I had an ultrasound at 36 weeks and baby was measuring 8lbs 11oz so the dr was talking about inducing me at 39 weeks so she wouldn't be too big for a vaginal delivery. Our second was told to be on track with our son's growth so we were expecting another 7 pounder. So we induced. I was really sad. This educational content is not medical or diagnostic advice. I didn't really mind the questions, but when my midwife heard about it she was irate and called the ultrasound office to chew some people out. Tweet; Submitted by Nic on January 18, 2012. Are you sure you want to delete your discussion? —Guest mommyJ, Accurate, but responses were not good Because I went past 40 weeks with my pregnancy (delivered at 42weeks), my midwife sent me for a BPP and non-stress test. Due Date Accuracy . Born 37 week 1 day at 4 lbs 8 oz. —Guest Dana, More than 1 lb off! I delivered at 38 weeks 4 days and she was 7lbs 14 oz. His head is on the larger size, so that may have contributed to the over-estimation. I'm still going to do what my doctor said, but I don't know how good it will do with 2 and a half weeks to go. Thanks for comforting me. So my doc and we were convinced that I was going to have an 8 or 9 lb baby. So much for "too big to birth vaginally"! Doctor said everything looked good and was in a rush so I didn't ask her anything. Tuesday morning (after 36 hours of labor) I had to have an emergency c-section and the baby was 9lbs 5oz. According to my LMP he was one day shy of 37 week but according to u/s he was 35 1/2wk. At birth, they were a full pound different. Ultrasound for fetal weight estimation is notoriously inaccurate for predicting the weight of … Because they thought my baby was about 8 lbs. I feel moist babies are around 6-8 lbs ! This action cannot be undone. Though these differences are small and not clinically significant, this study indicates that serial sonograms in … A 37-week ultrasound might be performed as part of a biophysical profile. With my second I had my last ultrasound at 28 weeks, they guessed he was about 5 lbs at that time. She was born at 40.1 wks at 8.5 lbs. When the doc felt my tummy he said he would of guessed 6 lbs but ultrasound said diff. I am bit worried now and would like to know from mamas who already delivered or yet to deliver what their ultrasound weights were and weight after giving birth. I was told I needed an u/s w/my son when I was 38 wks pg b/c I hadn't gone into labor yet. ACOG advises "An accurate diagnosis of macrosomia can be made only by weighing the newborn after delivery." How to Measure Fundal Height and Fetus Size. A term pregnancy is defined as the period of gestation from 37 completed weeks up to ... p = 0.001) were all lower in the non-accurate compared to the accurate weight estimation group. HERE ARE THE RESPONSES TO THIS ARTICLE:http://pregnancy.about.com/u/ua/ultrasounds/ultrasoundweight.htm?from=lb. However, u/s aren't completely accurate either. When I went back for my second BPP, everyone was polite and there were no questions about induction. So we had a repeat U/S at 37 weeks, which then estimated 7 &1/2 lb. —Guest onlycathyo, Ouch! Often a woman does this because her care provider has told her the baby is already 8 pounds, at 36 weeks, and she might need a c-section. estimated 95th percentile at28wks. they said my due date was off. —hostdiane, It happens! © 2021 Everyday Health, Inc. The 37 weeks pregnant ultrasound will be the last one before the birth. After my son I never put much stock in ultrasounds. Your baby at 37 weeks will be as big as a Winter Melon. Pregnant Katy Perry Says She Hopes Her Baby Is a Girl — Is There Any Way to Predict Baby’s Gender? My midwife (CNM) said "push hard... this is going to be a big baby". I agree with you about it being too late to eat less. Often a woman does this because her care provider has told her the baby is already 8 pounds, at 36 weeks, and she might need a c-section. The ultrasound guessed her at 8lbs and it was over a pound off! One study found prenatal ultrasound diagnosis of prediction of birth weight to be no more accurate than maternal or clinical predictions of infant birth weight [39]. He was born on Nov 18. So it's not an exact science! How to prevent preterm labor naturally. 9 weeks' gestation allow for more accurate prediction of birth weight than sonograms later in gestation. He was only 5 pounds 9 ounces. I hope this information helps you somehow. It will continue to function for the full duration of the pregnancy. 37 Weeks Pregnancy Ultrasound. so pretty accurate for me If you feel a message or content violates these standards and would like to request its removal please submit the following information and our moderating team will respond shortly. I had my 37 week appointment today and the doctor did an ultrasound. She also said my cervix isn't soft so I will most likely make it to my due date. How Accurate Is Ultrasound For Weight? 3 oz. : I had a fetal assessment done at 33 weeks, which showed my baby was at 37% approximately weighing 4.7 lbs. On my next post, I will be talking about 37 weeks pregnancy and ultrasound. http://prenatal-health.suite101.com/article.cfm/ultrasound_and_weight_of_baby, http://www.whattoexpect.com/forums/february-2010-babies/topic/how-accurate-is-an-ultrasound-in-predicting-weight/new?reply_to=how-accurate-is-an-ultrasound-in-predicting-weight, http://pregnancy.about.com/u/ua/ultrasounds/ultrasoundweight.htm?from=lb, reviewed by our medical review board and team of experts. At 38 weeks the average crown to heel length is 49.8cm (19.6in) and the average weight is 3.1kg (6.8lb. —Shelby.M09, Way way off. My midwife sent me for an ultra sound today during my apt today because she was "concerned" about the weight (measuring 41 weeks at 37+4 weeks) & position of the baby (breech). When your ultrasound is taken can affect the accuracy of ultrasounds. Hello,Yesterday I had an ultrasound at 39.2 weeks and baby weight is estimated to be 8 lbs 3 ounces and is in 95 percentile. Most physicians can detect a smaller than normal or larger than normal baby. This action cannot be undone. included dates and measurements of ultrasound scans and the date and weight of the baby at birth. We work hard to share our most timely and active conversations with you. If your pregnancy has a gestational age of less than 8 weeks (between 6 and 8 weeks), a transvaginal ultrasound (inserting the ultrasound probe into your vagina) is usually needed for accurate results. At 36 weeks they told me our girl was measuring 6lbs 7 oz. With this one they have been telling me 50th percentile the whole time and he was born 39 weeks at exactly 50th percentile. So my doc and we were convinced that I was going to have an 8 or 9 lb baby. She was born at 39 weeks at 5.5lbs. Don't let it stress you out, it can be WAYY off! Last Friday they thought 9lbs 1oz from the ultrasound. —tanyago, Varied with my 2 kids With my son, I had an ultrasound at around 38 wks, and they said he weighed 8.5l bs. I had an ultrasound at 34 weeks that estimated my baby to be 6 & 1/2 lb at that moment. I’ve had lots of scans this pregnancy and they always give the predicted weight. Fetal ultrasound measurements show how the baby is growing and also help detect abnormalities. Lucky you, I had my 37th week u/s today and docs said that she's already 8lb and 12 oz. So it was pretty close. The estimation of fetal weight during pregnancy is among the most important examinations done. Conclusions. One thing that is show in some studies is that an estimation of a big baby or a fat baby via ultrasound can increase the likelihood that you will have a cesarean. We analysed a total of 2296 pregnancies where an ultrasound scan was performed within 3 days of delivery, including 606 preterm (<37 weeks) and 1690 term deliveries. I’m 40 + 3 and had a ultrasound on Friday to check on her and they estimated her weight at 8lb 8oz! To mamas who have given birth .... at 36 weeks 2 days they estimated my guy at 6 pounds 12 ounces . Well the baby's not breech like she thought he may be and estimated weight is about 7 lbs 8 oz (I am 37 weeks 4 days) so the weight is on the 'higher' side. When I was pregnant with my older son, I had some growth concerns and so they did a few extra scans. I'm also having a lot of fluid eventhough I dont have diabetes. I HATE THAT! but wound up being 7 lbs 13 oz. I'm going to go on a walk with my husband later though. Pregnancy And Baby Care Articles Pregnancy Week By Week. She was born vaginally with no complications and I was not induced. Did your doctor say if you are going to delivery vaginally or by c-section? She is concerned because the baby is measuring 7 pounds. Please whitelist our site to get all the best deals and offers from our partners. Ultrasound on Friday to check on her own at 37 weeks, they will be big 13.8.. 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