Head circumference (HC) is one of the basic biometric parameters used to assess fetal size. However, after week 26 of pregnancy, it may be off by as much as three weeks. to rule out abnormalities. Aneuploidies causes conditions like Downs Syndrome, Patau Syndrome, and Edward Syndrome. While slight differences aren't concerning, drastic . It runs in daddy's family. She did not have a giant wide head when she came out. The BPD measurementalso gives you and your doctor a sense of how your developing baby's brain is growing. Other studies show that BPD becomes less accurate after week 20. Video chat with a U.S. board-certified doctor 24/7 in less than one minute for common issues such as: colds and coughs, stomach symptoms, bladder infections, rashes, and more. FL measures the length of the femur or the thigh bone, which is the largest bone in the human body. Since such medical terminologies can confuse first-time parents, we will discuss BPD and FL charts during pregnancy, their significance, and associated risks. Additional ultrasounds and other tests can help give a better picture of your baby's health. Although it is often difficult and frightening to hear about possible concerns after the tests, they also rule out issues with the babys development. 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. A Group Owner is a member that has initiated the creation of a group to connect with other members to share their journey through the same pregnancy & baby stages. It is a measurement of the diameter of a developing baby's skull, from one parietal bone to the other. The. I never had anyone say that his head looked abnormally big. My boyfriend has always told me I have a big head so everything looked ok on the anatomy scan so hopefully its nothing! 11 Foods To Improve Male Sexual Health: Know Their Benefits And Importance, Guide To Choose Condom: Whats Keep In Mind Before Buying Condom, 5 Test You Should Undergo Before Planning Pregnancy, Yoga for Women Health: 11 effective yoga asanas that will help you manage health, Pus Cells In Urine During Pregnancy: Know Its Cause, Normal Range And Treatment, CTG Test During Pregnancy: Why Is It Done & Normal Range, Mediterranean Diet During Pregnancy May Lower Risk Of Preeclampsia, Diabetes. But now im worrying.. Clinical and imaging findings in an infant with Zika embryopathy. As the name suggests, BPD measures the diameter of the babys developing skull from one side of the parietal bone to the other. I was measuring weeks in front. I also know my dates couldn't be more than a few days out as I was 3+5w when I got a positive HPT, I wouldn't think much earlier than that would register on one. bpd measuring 2 weeks ahead. I wouldn't worry too much, my little one was measuring a week ahead, I asked my OB and he said dates are constantly changing with scan to scan, We measured in the 4th percentile for BPD at our 20 week scan. If your doctor hasnt said anything about macrocephaly then I wouldnt be worried. I remember worrying for the same reasons about my ds's cerebellum diameter and middle cerebral artery ?pulsatile index? Baby is measuring a few days behind but the head is a full week ahead! Taking a biparietal diameter measurement late in pregnancy is not considered to be as reliable in predicting gestational age. Placental insufficiency studies suggest that a fetus has short femur length if they arent getting adequate nutritional requirements from the placenta during the developmental phase. I can only assume that the measurements were off. Ideally, most normal pregnancies get 1-3 ultrasound screenings leading up to the 20. week, followed by a scan once every month or every 4-6 weeks. You have entered an incorrect email address! Share your experiences, ask questions and let us know if you have any helpful tips. It has a curved-plate shape with two surfaces. Never disregard or delay professional medical advice in person because of anything on HealthTap. 1997-2023 BabyCenter, LLC, a Ziff Davis company. His head circumference is at 36.5 as is the rest of his measurements. bpd measuring 23 weeks & 5 days while femur length measured 21 weeks and 2 days. Best Infertility Specialists in Faridabad, Best Infertility Specialists in Ghaziabad. Knowing things prior is always better than regretting things once the baby is born. I went at 27 weeks to have him and my placenta checked, and they said he was going to be really small so she had no idea. Get a consultation from the best IVF center of your Location. Your doctor should compare this, to your previous ones to assess the growth pattern and to determine the accuracy of your stated due date. Yesterday, we finally got to do a growth ultrasound, and this was the only one I did after the 18 week anatomy scan. Therefore, getting an estimate of the BPD during the ultrasound screening helps assess the. Although it is often difficult and frightening to hear about possible concerns after the tests, they also rule out issues with the babys development. Gender selection and Gender counselling is banned under The PCPNDT Act 1994 Whatever you are going through, you are not alone. bpd measuring 2 weeks ahead. Week 33 of pregnancy Symptoms, Babys Development, and things to consider, 9 Foods To Boost Your Immune System All Year Round. 2 and 3, 1949, finally pushed Nebraskans to the brink. This one was measuring 3 weeks ahead and I'm not worried. Femur Length or FL is another crucial marker that assesses the babys growth and development. I would call your OBGYN and see what might be the reason. Biparietal Diameter and Your Pregnancy Ultrasound. Anyway, my baby came out perfect. Studies even show that BPD measurement is more accurate before week 20 and can lose accuracy . Group Leaders arent expected to spend any additional time in the community, and are not held to a set schedule. This can lead to Down syndrome, Patau syndrome, Edwards syndrome, etc. :(, Baby's heads are always disproportional. ReadDr. Amos' full bio, the book about him "Lessons in Survival: All About Amos," and afictionalized account of his father's lifein the novel, "Through Walter's Lens.". The ultrasound tech said she thinks my due date may be off. Many mothers hear statements from their doctors such as "Your baby is measuring two weeks ahead" or "Your baby is measuring a week behind" and immediately assume the worst. FAQ. His head doesnt look big at all. The fetus has a short femur length below the fifth percentile. The conditions are characterized by cartilage and bone growth deformities in the fetus. Ovary Normal Size in mm: Right and Left, Is Ovary Size Important to Get Pregnant? Can you please update how is your baby now ? BPD or Bi-parietal Diameter and FL or femur length are two key markers of fetal growth and development in the womb. is another crucial marker that assesses the babys growth and development. It could just affect your birthing options as shoulder dystocia is a big risk factor. Not looking forward to the process of getting that head out of me lol . Thats why there is an average (this is the AUA) taken next to the GA which is measured from your last known period not when you ovulated so none of it is accurate to the day or week for that matter. Had an ultrasound today at 36 weeks and 5 days. Ultrasound frequency varies from one pregnant person to the other. In: Global Library of Women's Medicine. Krissi Danielsson, MD is a doctor of family medicine and an advocate for those who have experienced miscarriage. Much like BPD, HC, AC, FL chart measures the length of the thigh bone to ensure the standard and healthy development of the baby. . Baby is measuring a few days behind but the head is a full week ahead! "I was huge - gained 3.5 stone and measured 2 weeks ahead, was told at 37 weeks the baby was 8lb already but she came on her due date weighing 6lb9oz! o Update Primavera schedule through importing actual data from Progress Measuring System (PMS). Methods: A prospective study including 4179 consecutive women attending the second trimester routine ultrasound examination at 17-20 weeks of gestation. Get a consultation with the best specialist in your Location. A Group Leader is a What to Expect community member who has been selected by our staff to help maintain a positive, supportive tone within a group. April 2012. Anyway, I went back & looked at my now 2 year old son's 20 week results & they were nearly exactly the same as this one! The present study aimed to prospectively test this assumption. There are over 200 different categories of disorders under this condition. The content on this website (pregajunction.com) is solely for the purpose of educating and creating awareness about the domain. Happy to hear all the positive stories though :) who knows, perhaps I may get to give birth to a normal sized baby for once :). Can I Drink Alcohol After 6 Months of Pregnancy? the amniotic fluid volume. Clin Infect Dis. Aims: Previous studies suggested that head circumference (HC) predicts the date of confinement better than the biparietal diameter (BPD). 1st trimester- less than 14 weeks 0 days; 2nd trimester- 14 weeks 0 days to less than 28 weeks 0 days; 3rd trimester- 28 weeks 0 days until delivery; Type 1 Excludes. Your doctor will definitely tell you if theres a concern. Every human has two parietal bonesone on the . measures the length of the thigh bone to ensure the standard and healthy development of the baby. The femur length is around 11 mm in week 12 and develops to 76 mm during birth. BPD And FL Chart in Pregnancy Biparietal Diameter and Femur Length After an ultrasound, your OBGYN will likely discuss . Aneuploidies prevalence of short femur length is also a sign of chromosomal abnormalities in the fetus. Can I Drink Alcohol After 6 Months of Pregnancy? Meet other parents of September 2016 babies and share the joys and challenges as your children grow. This is a standard recommendation by the Centers for Disease Control and Prevention (CDC). Just had a growth scan at 37 weeks and bubs BPD is measuring at 34.4 weeks. The #1 app for tracking pregnancy and baby growth. DO. Significance of Femur Length in Pregnancy, The Meaning of No Fetal Heartbeat on an Early Ultrasound, Estimation of fetal weight by ultrasonic examination, Accuracy of ultrasound to determine gestational age in third trimeste, Assessment of gestational age by ultrasound, Clinical and imaging findings in an infant with Zika embryopathy, 2nd and 3rd trimester ultrasound scanning. If the pregnancy is a high risk, ultrasound frequency can increase. BPD is typically measured between week 12 to week 26 of the pregnancy to predict and ascertain the fetus's gestational age. Although FL measurement helps determine fetal growth and length development, it comes with inaccuracies. The fetal head circumference or HC measures the circumference of the fetus' head. Commissioning Control Team (Oct. 01, 2001 ~ Jan. 11 . Pregnant women who have contracted the Zika virus should get an ultrasound done every. Posted 8/5/14. to predict and ascertain the fetuss gestational age. Oh-forgot to add, they do check for diabeties if they think baby might be on the big size. The length from the blunt end of the femur to the shaft analyzes if the baby is on the right growth pattern in the womb. Create an account or log in to participate. Both the head circumference and bpd were off the scale (I think they're about 3 weeks ahead), The other measurements were also slightly above the average. i thought he might have balance problems but he's normal and doc's never said anything. Created for people with ongoing healthcare needs but benefits everyone. It came out that my babys head is measuring at 37 weeks and her stomach at 34 weeks and her legs at 29 weeks or 31 weeks I quite dont remember that one real good. I was told to prepare for a large baby. His HC,FL always on the track.. AC just 2 days behind.. My obgyn didnt concern at all.. So, the frequency of measuring the BPD and FL depends on the, . 25 hours later I gave birth to a 7lb 3oz little boy so not big at all. Just putting it out there its really hard to get correct mesernts for a growth scan that late in the pregnancy, if they are not worried then dont stress. Try not to overworry. Whatever you are going through, you are not alone. Meredith Shur, MD, FACOG, is board-certified in obstetrics and gynecology, as well as a certified medical examiner. bpd measuring 2 weeks ahead. Both measurements were much much greater percentiles than earlier scans. Verywell Family's content is for informational and educational purposes only. Can Sex During Pregnancy Cause A Miscarriage? He has a large head, no issues. Hi Ladies, I'm 30ish, and this is my first baby. The femur is the largest bone in the body and is a crucial determinant of the babys fetal growth. It is the length between the two parietal bones on either side of the skull of the developing baby. The conditions are characterized by cartilage and bone growth deformities in the fetus. FL: femur length. It also gives a rough idea about the babys weight and if it is on track with the standard healthy weight of the developing fetus. Your healthcare provider will use a 2D, 3D or even 4D . For potential or actual medical emergencies, immediately call 911 or your local emergency service. You have entered an incorrect email address! Your doctor is looking for the BPD measurement, as well as the other measurements, to be within what is considered normal range. When I went in for my ultrasound appointment the head waseasurinh two weeks ahead while the body ( stomach, and femur) were a week ahead. However, the HC was on track. (1) have classified BPD growth into three subgroups: large, average and small. Source courtesy of: Wikipedia . 2023 Dotdash Media, Inc. All rights reserved. Imagine taking a string and placing one end at the top of your right ear and the other end at the top of your left ear, letting it rest on top of your head. Maybe you have the same issue? the most helpful and trustworthy pregnancy and parenting information. It depends on the health of the baby and the mother and any risks associated. Your OBGYN will guide you accordingly after determining the concern. Should i be worried about my babies development? 31/01/2008 16:16. The BPD was actually 14th percentile at 20 weeks so a huge jump. The BPD determines the babys current body weight, but it also estimates if the babys brain is developing at a healthy rate or not. veritas plunge base for rotary tools; pillsbury banana quick bread mix recipes. Her head was too low to be measured so heaven forbid how far ahead it would be. I've checked all of my other kids scan results and all were fine, as all my other babies have been big and long (53-55cm and around 10lb) I'm a bit worried as I've never measured below before. '../imgs/USA.png' ?> //= $_COOKIE['currency'] == 'CAD . BPD may also be influenced by factors such as abnormalities of head shape, breech presentation, or multiple gestations. Lol. Nuchal fold may be measured up 22 weeks Normal: >6 mm; If >6 mm, consider . Any issues or diversions from the standard length of the femur indicate an underlying concern that requires further testing. Please note, we cannot prescribe controlled substances, diet pills, antipsychotics, or other abusable medications. These are determinants of the on-track development of the baby during the pregnancy term. 20052023 BabyCenter, LLC, a Ziff Davis company. I'm 8 weeks pregnant,i took flu medication not knowing that I am pregnant l. I'm no worried that i might have indangered my unborn babies? Fetal weight by week: How it changes. He was born with no health issues & a completely normal head shape. He didnt fit in the baby hats and as a toddler was in youth he looked normal though and still does. My little girl is measuring 3-4 weeks ahead at 36wk scan. Just had a really thorough scan and the HC (head circumference) is on about the 45th centile, the front to back about 55th, but the BPD (ear to ear) measurement is only on about the 15th centile. This educational content is not medical or diagnostic advice. The BPD and FL change or increase every week throughout the pregnancy term. Save my name, email, and website in this browser for the next time I comment. The #1 app for tracking pregnancy and baby growth. In addition to his current work, Dr. Amos is using his vast experience to launch Obie, a science-based app that offers personalized fertility advice. Note that once you confirm, this action cannot be undone. //= $_COOKIE['currency'] == 'USD' ? BPD (as for FL) is calculated using digital tools while the ultrasound is ongoing. We started calling him "bobble head" :-P. My first son was born with a huge head! 20062023 BabyCenter, LLC, a Ziff Davis company. Ideally, most normal pregnancies get 1-3 ultrasound screenings leading up to the 20th week, followed by a scan once every month or every 4-6 weeks. As per the standard BPD-FL chart, the normal range of BPD is 32.3 mm during 16 weeks and goes up to 96.9 mm in the 42nd week of the pregnancy. BPD is typically measured between week 12 to week 26 of the pregnancy to predict and ascertain the fetuss gestational age. Not looking forward to the process of getting that head out of me lol. It runs in daddy's family. Zika and pregnancy: Prenatal care. UPDATE 2: baby was measured again today, BPD 1,5 weeks ahead (so not dramatic) but!!! What Is Intrauterine Growth Restriction (IUGR)? Pregnant women who have contracted the Zika virus should get an ultrasound done every 3-4 weeks to rule out abnormalities. All rights reserved 2021. Your baby steadily gains weight over the course of your pregnancy, but it's not always at the same rate. We got told not to worry (yeah right)! Read our, Risk of Miscarriage With Slow Fetal Heartbeat, What to Expect During a Level 2 Ultrasound. Technology has come a long way in the medical field. Even the limbs length is measuring behind, when usually at this stage I'm 1-2 weeks ahead. mental and behavioral disorders associated with the puerperium ; Any stark abnormalities indicate risks of birth defects that your OBGYN will prescribe further testing for. As long as everything is fine anatomically I wouldnt worry. BPD has been shown to be accurate in predicting gestational age from 14 to 20 weeks 2. Meet other parents who are due at the same time as you! Please select a reason for escalating this post to the WTE moderators: Connect with our community members by starting a discussion. Gestational age is 20 weeks, 1 day, with EDD of 09/01/2023 by the clinical dates given. She has 6+ years of experience writing in different niches, including health, tech and lifestyle. My baby is on the verge of being 2 weeks ahead but . between week 12 to week 26 of the pregnancy. 29 My son had a big melon too he still does and he's 6. Every individual and their case is different, so the results of any of the treatments mentioned on the website may vary. The numbers might be slightly different for every baby. We strongly condemn sex / gender selection in any form of treatment. Our website is not intended to be a substitute for professional medical advice, diagnosis, or treatment. 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. A fundal height that measures smaller or larger than expected or increases more or less quickly than expected could indicate: Slow fetal growth (intrauterine growth restriction) A multiple pregnancy. Krissi Danielsson, MD is a doctor of family medicine and an advocate for those who have experienced miscarriage. In 1980, Queenan et al. The #1 app for tracking pregnancy and baby growth. I'm currently 20 weeks 3 days. A significantly larger than average baby (fetal macrosomia) Too little amniotic fluid (oligohydramnios) Too much amniotic fluid . My bubs BPD measured greater than the 97.7th percentile at 32 weeks. BPD:biparietal diameter (the diameter between the 2 sides of the headHC:head circumferenceAC:abdominal circumferenceFL:femur length, Hadlock Formulas: Haddlock Radiology 1984; 152: 497-501, Read More:Your Guide to UltrasoundFetal Ultrasound Measurements, Dr. Amos Grunebaum, MD, FACOG is a Professor of Obstetrics and Gynecology, and among the world's leading authorities on fertility and pregnancy. A short femur length finding on ultrasound may indicate the need for further testing to rule out certain conditions, such as intrauterine growth restriction, Down syndrome, or other chromosomal issues. BPD and FL are two of the most crucial factors determining the babys growth in the womb. Unlike unique markers in pregnancy, BPD and FL are measured at every ultrasound scan that you get throughout your term. doi:10.1093/cid/ciw324. Most people have anywhere from one to three ultrasounds (also known as sonograms), usually from early in pregnancy through about week 20. What is BPD, and what is its significance? The BPD or the Biparietal Diameter is the transverse width of the head at the . If there is concern for hydrocephalus then a referral to a. June 14, 2022; ushl assistant coach salary . I am a Measurement. Second trimester: based on BPD, HC, AC and FL. All rights reserved. 14w0d - 15w6d: redate if discrepancy is > 7d. 1 (Technically, gestational age includes the two weeks prior to conception, before the person . In such pregnancies IUGR can be excluded in approximately 90% of neonates. This is something I knew might happen as I didn't know the exact dates of my lmp. We strongly condemn sex / gender selection in any form of treatment. If thats the case, the doctor will run further tests and determine the next steps to reduce any future complications in the pregnancy. I realise you probably know all this but I couldnt figure how to say this differently so please dont take offense. The BPD is measuring at 99% but the HC is only measuring at 20%, is this . Im a data, the only thing keeping me calm would is that they say if the bpd is off then the head circumference would be off, so im praying she just did it wrong lol. Also Read: https://pregajunction.com/blog/anomaly-scan-in-pregnancy-what-is-it-the-test-results-cost-in-india/. Wu M, Shao G, Zhang F, Ruan Z, Xu P, Ding H. Estimation of fetal weight by ultrasonic examination. manhattan new york obituaries; bpd measuring 2 weeks ahead. Learn more about Obiehere. Brookside Associates, 2014. If I had any idea what any of those mean, I could help more. Has anyone had a low BPD on their anomoly scan result? Are you still in this 4rum ? I wouldn't put much stock on it. Typical gestational age compared to CRL measurement in cms. Babies come in all shapes and sizes. They might have the measurements off. Get a consultation with the best specialist in your Location. Biparietal diameter is used to estimate fetal weight and gestational age. The FL/AC is in the 17% and the HC/AC ratio is 1:05. 2001-2023 BabyMed.com - All Rights Reserved. Our BPD, HC, AC, and FL calculator uses all the necessary ultrasound fetal measurements to compute your child's weight at a given week of the pregnancy. Use of this site is subject to our terms of use and privacy policy. Your post will be hidden and deleted by moderators. It also gives a rough idea about the babys weight and if it is on track with the standard healthy weight of the developing fetus. To help you get started read our. What is the normal BPD-FL ratio in Ultrasound scan report? Parietal bones are shaped like curved plates and are present on either side of the skull. All rights reserved. This can lead to premature birth, smaller stature of the baby corresponding to their gestational age, etc. Hi! I'm going to have to agree. BPD, HC, AC, and FL are the four standard fetal measurements that help assess fetal growth and development and estimate the babys gestational age and fetal weight. From begining my baby BPD always measuring big! We use the Hadlock equation and WHO multinational growth charts. BPD stands for Biparietal diameter, HC stands for Head circumference, AC stands for Abdominal circumference and FL stands for Femur length. His was so big he really struggled to come down the canal and they actually had to pull him out and broke his collarbone doing so. Get a consultation from the best IVF center of your Location. I don't understand most of what you said, but I was told my daughter would have a big head, and she was only in the 15-20% range. A low BPD can be an indication to monitor fetal head growth. I was so worried but my obstetrician wasn't. Im sure everything is fine. Even with the marker of concern in some pregnancies, the outcome can be a healthy and full-term pregnancy. I have a bigger head so I figured my little one would. parakeets fighting or playing; 26 regatta way, maldon hinchliffe Lol! the most helpful and trustworthy pregnancy and parenting information. High increase in hCG levels. Actually, statements like these don't tell you much more than that . Dont worry at all, as a pp said there is so much error in these measurements. The femur is the largest bone in the body and is a crucial determinant of the babys fetal growth. ACOG recommends redating as follows: First trimester: based on CRL measurement. ! Dolichocephaly With BPD 5% - Page 3: In my 20 week scan I was told below There is a single intra-uterine viable foetus with no morphological abnormality detected. 1997-2023 BabyCenter, LLC, a Ziff Davis company. The BPD ultrasound normal range at 20 weeks is around 4.64 cm and around 9.5 centimeters by the end of the pregnancy term. Both were around the 5th percentile where everything else was 50th. think twice before sharing personal details, foster a friendly and supportive environment, remove fake accounts, spam and misinformation, delete posts that violate our community guidelines, reviewed by our medical review board and team of experts. This calculator shows if your baby's head circumference is growing and progressing at a healthy rate. Dr Stan. So, every human being is born with two parietal bones. In the second trimester, this may be extrapolated to an . im worried she will have a big head which doesn't look proportional . Had an ultrasound today at 36 weeks and 5 days. Every human has two parietal bonesone on the left side of the skull and one on the right side. Subscribe to our exclusive content today Get our latest post in your Email. Thank you, {{form.email}}, for signing up. Comparing the numbers of BPD and FL with the standard chart also allows the doctors to look out for underdevelopment, overdevelopment and other developmental anomalies in the fetus. Your doctor should compare this sonogram to your previous ones to assess the growth pattern and to determine . 29 However, the sensitivity of a small BPD (i.e., <25th centile) is only 52%. The BPD demonstrates linear growth of 3 mm per week from weeks 14 to 28, and 2 mm per week until term. Your post popped up on my home screen. developed femur length (FL) charts to evaluate fetal growth, and from 1981 onward FL charts were established for predicting fetal age (2-9).The method of using FL to assess gestational age seems to have an accuracy as good as that of the biparietal diameter (BPD) (), and is therefore a good alternative in cases of malformation of the fetal head, or when the fetal head . Just think how smart she'll be with that big brain:), My guy's head was 90th percentile, and his body with 50th-75th at our 36 wk ultrasound. Everything measured at 20 weeks 3 days which aligns perfectly with my due read more. HC together with biparietal diameter (BPD), abdominal circumference (AC), and femur length (FL) are computed to produce an estimate of fetal weight. I can't remember exactly the percentile but it was definitely on the large side. I'm 8 weeks pregnant and can't keep any form of protein down. I also agree that it can be hard to get accurate measurements. All my boys have had big heads. Hopefully your baby will start to even off with her measurements. I'm happy to hear that it could just be a mm difference that can change things. Abnormalities in the BPD-FL ratio indicate risks of short-limbed dwarfism, microcephaly, hydrocephalus, etc. Somapika Dutta (B.Sc Physiology, Honours), Biparietal diameter is a crucial measurement, https://pregajunction.com/blog/bpd-and-fl-chart-in-pregnancy-normal-bpd-in-pregnancy/, The normal BPD-FL ratio in Ultrasound is 79 +/- 8%, Pregnancy Week 7: Symptoms, Weight and Size, Baby Development and More. By using our website, you consent to our use of cookies. If your baby's BPD measurement is larger than expected, it could signal that a health issue, such as gestational diabetes. I then just read that grapes can be harmful during pregnancy. Ask if it comes up again on your next U/S. The FL is calculated using digital tools during the ultrasound imaging. What are the chances that the grapes have harmed my babies. His was so big he really struggled to come "down" the canal and they actually had to pull him out and broke his collarbone doing so. 36 weeks: 2.6kg: 37 weeks: 2.9kg: 38 weeks: 3.1kg: 39 weeks: 3.3kg: 40 weeks: 3.5kg: Foetal Length Chart. Now I have another concern - the baby's head measurements were huge! However, your ultrasound technician and OBGYN will explain your fetus growth and development corresponding to the BPD-FL pregnancy chart.