Ultrasound weight estimates vs. actual birth weight?

[WantsALittle1]

Has anyone ever had a growth scan close to their delivery, and found that the growth scan estimates had been way off?

Little Man has been measuring 90th percentile weight since 20 weeks and at my 36+2 scan he jumped up to the 97th percentile (7 lb 14 oz). I know that ultrasound weight estimates become successively less accurate as you approach delivery, but our weight estimates have all been along the same percentile until this last one, so my doctors feel very confident that I am having a very big baby.

Just wondering how much your ultrasound weight estimate and delivery weight differed in prior pregnancies?

Thanks!

 

[lovelymiss]

This is my first, so I have no personal experience... however based on people I know and what I read online... they are often WAY off. Like by 2 pounds. I wouldn't put much into it!

 

[ProudMomma2Be]

Mine was spot on . Had an ultrasound and they told me he should be just a little over 7 pounds and he was born next day at 7pounds 2 oz . At 38 weeks tho

 

[KellyLouise91]

I will be stalking this post I got told at 35 weeks and 2 days that my daughter is weighing at 6lb im so scared as yes babys engaged but looks rather comfy on scans and isn't showing much signs of budging any time soon I have yet another growth scan on Tuesday so hopefully they may do something x

 

[SallyShaw]

20yrs ago, when I had my first.. I was told my baby was going to be over 8lbs. He was just under 7. My 2nd kid, I dont recall them giving me a weight approximation. If they did, i ignored it because they were off the first time. lol

 

[Lady_Bee]

I had a growth scan around 38 weeks or so with my first due to FH measuring behind... And they estimated he was 8 lb already!!!

However, he was born at 42 weeks and 1 day and only weighed a very average 7 lb 9 oz. So I am sure at 38 weeks he can't have weighed anywhere near 8 lb! Probably closer to 6!

 

[tristansmum]

Mine was right I think.
At 37+3 they estimated 7lb 7oz. He was born 40+6 at 9lb 3oz. They say they put on 1/2 a lb per week at the end which made my estimated weight almost correct.
However I think alot of time they are way off....

 

[WantsALittle1]

I will be stalking this post I got told at 35 weeks and 2 days that my daughter is weighing at 6lb im so scared as yes babys engaged but looks rather comfy on scans and isn't showing much signs of budging any time soon I have yet another growth scan on Tuesday so hopefully they may do something x

Are you scared of that weight being too large or too small? I think 6lb is a great weight for 35+2, if a little on the bigger side? My understanding is that large babies don't cause labor to happen any sooner, nor will they induce/section earlier than 39 weeks even if the baby is measuring large. Even though Little Man is now 97th percentile, our consultant refuses to move my C-section date any sooner than 39+1 I am so bummed about that, as I'd certainly enjoy being free from the excruciating back pain of carrying this large baby very very low. He has been low since 20 weeks--my bump pops way out to the front and it really does horrible things to my back and pelvis. I am on muscle relaxants to cope with the pain--I absolutely hate them, as they make me feel completely doped up for 24 hours after taking them

 

[ButterCup17]

They've been saying my little guy is big since 19 weeks. Sometimes he measures in 97%, once in 64%, and last week (33 weeks) at 84%. They said he is 5.2 already...I was very scared in the beginning since I'm a FTM, mom the more I've read and heard from other moms, I'm less worried bc i don't think it's always accurate. I'm hoping nothing more than 8 lbs by ti guess wel see!

 

[KellyLouise91]

I will be stalking this post I got told at 35 weeks and 2 days that my daughter is weighing at 6lb im so scared as yes babys engaged but looks rather comfy on scans and isn't showing much signs of budging any time soon I have yet another growth scan on Tuesday so hopefully they may do something x

Are you scared of that weight being too large or too small? I think 6lb is a great weight for 35+2, if a little on the bigger side? My understanding is that large babies don't cause labor to happen any sooner, nor will they induce/section earlier than 39 weeks even if the baby is measuring large. Even though Little Man is now 97th percentile, our consultant refuses to move my C-section date any sooner than 39+1 I am so bummed about that, as I'd certainly enjoy being free from the excruciating back pain of carrying this large baby very very low. He has been low since 20 weeks--my bump pops way out to the front and it really does horrible things to my back and pelvis. I am on muscle relaxants to cope with the pain--I absolutely hate them, as they make me feel completely doped up for 24 hours after taking them

my baby has an echogenic bowel which is what im scared of and theyre sayin shes going to be very big so I don't know they wont do anything as babys not distressed or in any pain I know how u feel about the back pain I think I have spd but not been diagnosed with it I cant get dressed alone never mind get up the stairs oooh 21 days and counting if they don't do anything on Tuesday which im praying they do as im worried about my baby

 

[WantsALittle1]

I will be stalking this post I got told at 35 weeks and 2 days that my daughter is weighing at 6lb im so scared as yes babys engaged but looks rather comfy on scans and isn't showing much signs of budging any time soon I have yet another growth scan on Tuesday so hopefully they may do something x

Are you scared of that weight being too large or too small? I think 6lb is a great weight for 35+2, if a little on the bigger side? My understanding is that large babies don't cause labor to happen any sooner, nor will they induce/section earlier than 39 weeks even if the baby is measuring large. Even though Little Man is now 97th percentile, our consultant refuses to move my C-section date any sooner than 39+1 I am so bummed about that, as I'd certainly enjoy being free from the excruciating back pain of carrying this large baby very very low. He has been low since 20 weeks--my bump pops way out to the front and it really does horrible things to my back and pelvis. I am on muscle relaxants to cope with the pain--I absolutely hate them, as they make me feel completely doped up for 24 hours after taking them

my baby has an echogenic bowel which is what im scared of and theyre sayin shes going to be very big so I don't know they wont do anything as babys not distressed or in any pain I know how u feel about the back pain I think I have spd but not been diagnosed with it I cant get dressed alone never mind get up the stairs oooh 21 days and counting if they don't do anything on Tuesday which im praying they do as im worried about my baby

Aw hon, that's rough. I think I understand what you mean. When there is a potential health concern like that with the baby, you feel like you want LO out so you can find out what (if anything) is wrong and be sure she is being monitored and treated for it. During pregnancy it's like a waiting game and you feel powerless to help LO.

Because of what happened to my DD (almost died from cord entanglement), contrary to what everyone says I have always felt like baby was safer outside my body than in. I feel like my body is a landmine for my children

Do they have a likely explanation for the echogenic bowel?

PS. We are due the same day. My RCS is scheduled for Jan 20th though.

 

[Whitesoxfan41]

Hugs!

This little girl was estimated 5lbs 9oz at 33 weeks and I have GD so I'm hoping it's off some.

 

[minties]

Thomas: estimated November 30th at 3.3kg (7lbs 4oz), born 1st December at 3.3kg.

Sophie: estimated on several occasions to be a 10lb baby. Was 7lbs 15.5oz (3.6kg) at 39+2.

So one was very accurate, and one not so much.

Sophie's tummy was measuring 38+3 when I was 36+2. She was chubby, but not huge by any means. She was 48cm long. I think that's 18.something inches? They said she's be 22 inches!

 

[Bubble2011]

With my last baby I went into labour at 33weeks. Following a scan the tech told me to expect a 4, maybe 4&1/2 pound baby.

George was born 2 hours later at 7lbs 1oz!!!

 

[mrsdean2009]

Had a growth scan at 40+1 due to consistently measuring small and DD was estimated to be 7lb 7oz. Gave birth 2 days later and she weighed 6lb 11oz

 

[sugarpuff]

In my last pregnancy I had a scan at 38+2 and they estimated at 6lb 1oz, I went into labour the following morning and had her less than 24 hours after the scan and she weighed 5lb 2oz

They were a bit pants at her scan and failed to realise that her measurements were way off - head 1 week behind, femur 3 weeks ahead and abdomen 5 weeks behind (it did show up in their scan measurements but the technician didn't pick up on the fact that they were so off)

 

[Jonesy25]

I had a scan at 33 which said he was 5.5lb! Have another friday so will see what he is approx then! They think he will be big x

 

[emmancee]

In my first pregnancy I had a growth scan at 36+5 and estimated weight was 6lb 10...so estimated approx 8lb 4oz full term. I had her at 40+1 and she weighed 8lb 12oz so the growth scan was about half a pound out.

I had a growth scan at 32+5 with this pregnancy and they gave estimated weight of 4lb 9oz which I think is about 8lb full term so have yet to see if it is accurate!

 

[littlesteph]

mine was pretty close to baby's birth weight.
I had a scan at 35+4 and had him at 36+4
at the scan he was estimated to be 4lb 4oz and he was born weighing 4lb 6oz.

 

[kate1984]

Was told at 36 weeks that my baby weighed 6lb had him 9 days later at 7lb 11oz. So for me he was bigger than they thought