Difference in weight.

Kara - posted on 10/06/2009 ( 25 moms have responded )

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Two weeks ago I had an ultrasound and they measured the babies, Baby A was 5.2 lbs and Baby B was 5.6 lbs. I had another ultrasound today and Baby A measured 4.9 lbs and Baby B was 5.12 lbs. So t Baby B has gained 6 oz but Baby A has lost 10 oz. The technician said Baby A is skinny and Baby B is a little chubby. They did say when they measure it can be +/- a few ounces. Has this happend to anyone else? I am scheduled for a c-section in exactly 2 weeks (Oct. 20th), I will be 37 weeks. I am wondering where Baby A will be with his weight and if they will be having a longer stay in the hospital.

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Jennifer - posted on 10/16/2009

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Our doctor told us the magical number was 25 percent. If there is a 25 percent difference in their weights they get concerned. I actually ended up with an unexpected c-section at 36 weeks, 0 days partly because of this. I developed HELLP Syndrome, which caused me to have an emergency c-section. But the c-section itself was because Baby B was more than 25 percent larger than Baby A. If one of your babies is losing weight insist they do an ultrasound every week. I probably would have ended up having them at 35 weeks if we had done an ultrasound that week. At 34 weeks they were fine and then at 36 we had a problem. I'm not complaining. I had a fantastic doctor - just saying how fast things can develop at this stage. My twins were born at 5 lbs, 15 1/2 ounces and 7 lbs, 6 ounces. The ultrasound was about a pound off on both of them and we went home after three days with no trouble. They're six months now and my son is still quite a bit larger than my daughter.

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Patricia - posted on 10/30/2009

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my b/g twins have were born @ 36 wks,6lbs+6lbs oz and have stayed almost exactly the same ever since! But he is a little taller than her off and on the past 2 yrs or so.

Tracee - posted on 10/25/2009

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I'm sure your twins will be just fine as far as weight is concerned. I was induced at 36 wks and 3 days after being on bedrest for 4 1/2 months. My boys weighed 4lbs 15oz and 5lbs 15oz. They left the hospital with me two days after their birth. Baby B, the smaller of the 2 is now taller and weighs more than his brother at age 5!

Faith - posted on 10/24/2009

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My twins they kept saying were close in weight clear through out my pregnacy...when they came out at 38 wks by C-section Damon was 6lbs 8 oz and Tiffany was 4 lbs 9 oz.. so keep in mind that it is by NO means acurate.

Rena - posted on 10/17/2009

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I would not worry about it unless your doctor is concerned. The ultrasound measurements can be =/- 1 pound. they were certainly not accurate with mine! Twin A always measured a few ounces more than B but when they were born twin B was over half a pound larger! Still both healthy. Voice your concerns to your doctor, but I am sure they would be taking some more precautions if necessary. Just remember, you are already 35 weeks and your babies are nice sized! I wouldn't stress too much :o) Good luck

Melissa - posted on 10/16/2009

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I had my set of twins at 366weeks and 1day and and mine were born at 6lbs 8oz and 6lbs 10 1/2oz and a week before i had them and by the ultrasound they were only weighing about 5lbs. they only had a 24hour stay because they were considered full term.

Jennifer - posted on 10/16/2009

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I also had a schedualed c section at 37 weeks. The week before when I had my last ultrasound baby A (my boy) was 6 1/2 pounds and my daughter was 5.6lbs. When they were born my son weighed 5lbs 9 oz and my daughter was only 4lbs 8 oz so 1 lb difference. They took them both to the NICU for the night just to observe. He had some fluid in his lungs and the just wanted to watch her because of her weight since she was under 5 lbs. All was good though they came to my room at the crack of dawn and the 3 of us were released from the hospital 3 days later. All the best to you. Exciting times are ahead for you.

[deleted account]

I don't know how mych faith I would put in the #'s they give you from ultrasounds, they told me that my boys were half a pound difference and they both came out exactly 5lbs 11oz. They won't have to stay longer in the hospital if they are over 5lbs and can regulate their own body temp

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My two boys were 1 lb difference at birth and almost 3 lb difference now at 8 and a half months - but both are healthy, Niah has maintained weight while Arlo has gained, and in the words of my g.p - Niah is just "small frame". Too much onus is put upon average and normal, especially by health visitors, healthy is what matters. Arlo is an inch taller, the ultrasounds were way out!

Suzanne - posted on 10/11/2009

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Ours were born at 32 weeks 1 day and were taken csection after staying in the hospital on bedrest for 2 weeks previous to that. Our daughter was 2.6lbs and our son was 4.4 lbs. We had a few battles in the beginning but our daughter was never on oxygen where as our son was on cpap. He wound up having breathing issues for the first year and our daughter went through much more than that. She survived NEC and a brain hemmorage (grade A). She was supposed to be "delayed" and went through OTPT for the first year. Both kids are now 3 1/2 and have NO medical issues and are on track if not ahead of it learning wise. All babies are different and you can't compare Baby A to Baby B for they are two separate children. Your weights and lenght of pregnancy are really good so you have a great head start! We were in the NICU for almost 40 days or so between both. Our son came home a week before his sister due to her size but when she did get to come home she was only 3.9lbs and it scared me to death. They don't have a weight limit anymore, so long as they can suck, have good wet/dirty diapers, and keep their own body temp they get to go home now adays. Good luck!

Stacie - posted on 10/11/2009

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I think the last ultrasound I had before my twins were born said one was 5lbs and one was 6 lbs. They said that the measurement maybe +/- a pound. My fraternal boy/girl twins were born at 38 weeks and 1 day. My little girl was 5lbs 9oz and my little boy was 4lbs 8oz. Neither one had to stay in the hosiptal b/c of their weight. As long as they can hold their own body temp, eat and breathe at the same time, then usually they can go home with you. I took my little girl home when I left the hospital which was less then 2 days. My little guy was in the NICU for 8 days b/c of breathing problems, but now almost 3 years old they are perfectly healthy. Karson, my little boy who was the smaller of the two now is bigger by 2 pounds. So far they are very close in height and weight. One checkup Kendyll might be taller by 1/2 inch, but the next time Karson is. Good luck to you it sounds like you'll have two healthy babies. I hope everything goes well for you.

Amy - posted on 10/10/2009

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I was expecting to be having babies about five pounds each...one was almost five pounds and the other was a half pound less. The ultrasounds are really not that accurate in my opinion. They'll let you know if their big enough to deliver but once they get here it's hit or miss. Those are still good weights for twins though so I wouldn't worry about it. My girl was just under five pounds and son was just at 4 1/2...both were happy, healthy and didn't need any assistance.

Cassie - posted on 10/10/2009

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When I was pregnant they noticed that one of the twins was growing more than the other and that the little one didn't have alot of fluid around him so I had to stay at the hospital for 2 weeks so they could monitor him. They estimated that he was 4 pr 5 lbs smaller than the other one. Everything ended up fine and I ended up having a scheduled C-section at 37 weeks and both boys were fine. They were 7.8lbs abd 4.7 lbs. And the stay isn't really based on weight. Its more if they can breath and maintain a normal temp on their own.

Melissa - posted on 10/10/2009

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Kara, this happened to me too during my pregnancy but in my opinion they techs were a bit off because my boy/girl twins were born 6pds 12oz and 6pds 10oz. I had them at 37wks 3 days when my water broke and they were born vaginally. Luckily, I didn't have any complications during my pregnancy. Why are you having a c-section? Are you having complications? I'm sorry if I'm being too personal. I'm just curious. I know that my sister decided to have a csection with her second because her first was and she didn't want to risk a ruptured uterus. Good luck to you!

Ashley - posted on 10/09/2009

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mine was born at 38 wks and weighed 6lbs and 6lbs 10 oz one was 18 inches and the other 19 inches

Melissa - posted on 10/09/2009

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I just has an ultrasound today at 33 weeks and 4 days, baby A is measuring 4lb5oz & baby B is measuring 4lb14oz. the doctor said my babies looked healthy & completely normal. also baby A is measuring in at a little over 32 weeks & baby B is measuring in at a little over 34 weeks. apparently they're healthy so that's all i'm worried about :)

Sheryl - posted on 10/07/2009

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My twins were born at 33 weeks and were quite different in weights - 5 pounds, 4 ounces and 3 pounds 12 ounces. Even though we had a few ultrasounds, one 4 days before the c-section, it was never found out about their weights until birth. They both did fine - they stayed in the NICU for feeding issues and not being able to keep their temps up. The hospital policy for keeping babies didn't have a weight minimum - just so they were independent eaters, breathers, and could keep their body temps up on their own. They came home about 3 1/2 weeks later and have not had any problems. They each gained about a pound before coming home - our littlest one was only 4 pounds 9 ounces when we brought him home. They are 17 now, and they have always had a difference in weight. As babies and toddlers, the bigger one was better at fine motor skills and the smaller one better at large motor skills. good luck - hope all goes well!

Evelyn - posted on 10/07/2009

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My twins were far apart weight wise through the pregnancy as I had Twin to Twin transfusion syndrome (one placenta). This happens more often with identicals but I have fraternal twins, boy & girl. She was less than half his size until the last 3 weeks. She then doubled her weight just before I went into labor. They were born at 36 weeks 5.5 and 6.1 lbs and we were in the hospital maybe 24 hours before we went home! now you would never know she was the tiny one:) She is taller and heavier than her brother. She zoomed past him by 5 months of age and he has never caught up!

Summer - posted on 10/07/2009

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Did your doctor express any concern over baby A's apparent weight loss? Sometimes one twin can be getting better nutrition than the other. The ultrasounds are just estimates too though. My oldest son who is a singleton was estimated to be 8 lbs, but he actually came out 9 lbs. 2 oz., so they were way off on that one. My twins were estimated to both be about 7 lbs. Twin A was 7 lbs. 6 oz., twin B was 6 lbs. 5 oz. I think there are several criteria they have for establishing whether it is safe to let a baby go home, but I have a friend who brought her twins home with her just a few days after delivery and one of them was just under 4 lbs. I think they have to be eating whether it is breast or bottle, breathing good, have a regular heart beat, peeing and pooing, holding their body temp., not be too jaundiced, and I know that they monitor their sugar. I was trying to breast feed mine in the hospital, but their sugar was dropping and the nurses advised me to start supplementing until my milk came in good so they wouldn't have to stay in the hospital. There is probably other things too, but I don't think the weight is as important as the other stuff.

Kayra - posted on 10/07/2009

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My babies were estimated to be 4 lbs when they did the last ultrasound. They were born at 34wks and weighing 4.5 and 5 lbs.

They are now 3, and the bigger one is the one who weighed less at birth. They have completely different body types too.

Alda - posted on 10/07/2009

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I don't know if this will help, but my twins were born at 28 weeks. One was 2lb 7oz and the other 2lb 5oz. The one had an ileostomy and stoma a could only have intravenous nutrition for three months, so had serious problems gaining weight. After the stoma got reversed she slowly started putting on weight, but there is now a 2lb difference between them and possibly will be for a long time to come (they're 13 months).

Sarah - posted on 10/07/2009

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i had my twins at 37 wks, they where 4lbs and 6lbs 2oz and no problems and we where all home 3 day later.x

Michelle - posted on 10/07/2009

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try to remember its just essamation so dont worry to much i had 1lb 11oz between mine and they were fine but just a tip load up on milk and yougert it helps the babys weights they were 5lb and 6lb 11oz at 37/3weeks we went home 4 days latter becuase i had 5 kids waiting at home and id been in hospital for 3 half weeks resting so with the promise of going straight to my kids ped they let me out good luck and get plenty of rest

Kelle - posted on 10/06/2009

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I had my twins at 32wks 6days - they were only 3oz apart (3lb 14oz & 4lb 1oz). And they stayed 3oz apart the whole time they were in the NICU. I heard its completely normal for up to 2lb difference in twins (I think thats for full term).



If you are having your twins at 37weeks they might not have any hospital stay... and if so it wouldnt be due to size/weight. Their use to be a 5lb 8oz rule but now as long as the child is healthy and can take a bottle they can go home even if they are only 2lb.

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