Difference in Sizes...

Have you ever seen twins with this size difference?

I heard just yesterday from another twin mama that twins with more than 1 pound size difference are considered extremely high risk for the smaller twin. (In Utero)

My two when born had over a 3 lbs size difference. Jordan was 6lbs 5 ounces and Sienna was 3 lbs 4 ounces.

Now at 6 months, Jordan is 22 lbs 5 ounces and Sienna is 15 lbs 9 ounces.

Just curious if this was common or rare?

 

I had never heard that! My OB was never concerned about the size difference of my two. Maybe because they were fraternal?? He always commented on the size difference but when I asked he said it was fine and they were both growing at every appt. DD was always estimated to be about 1 to 1.5lbs smaller then my DS. She had always been a week behind growth wise since my 6 week u/s..I did IVF to conceive my two.

At birth he ended up being 2.5lbs bigger. He was 7.10lbs and she was 5.3lbs. I think (in my drug induced state) there was talk about IUGR but there was never any mention of it again. She was monitored with b/w which was all normal.

Now at 6 months there is only a 13oz difference between the two. He's 15.13lbs and she is 15lbs :icon_biggrin:

 

Diane,

thanks for the response. I did ivf also and there was always a week difference between my two as well. I transferred one morola and two blasts so I think my little girl is the morola who was perfect just a little behind. :wub:

They had estimated her at 5lbs something pre-birth and panicked at 35 weeks as they thought she had stopped growing and so I had my c-section 2 weeks earlier than scheduled. What a suprise when she was even tinier at 3 lbs. I was so happy the dr made the call to take them when they did as who knows what would have happened. And my son was quite big condsidering he was 5 weeks early.

 

Did you have fused placentas? Mine were fused and Emma was 1.5lbs bigger at birth. Now Jake outweighs her by 1lb! I have seen a few on the site with big weight differences.

 

QUOTE(becky5 @ Aug 27 2007, 11:39 AM) [snapback]381482[/snapback]
Did you have fused placentas?


I don't think so... no-one ever mentioned it. And I think if I remember correctly we could see them seperately on the scan.

 

my b/g twins via IVF were only 1 pound different at birth but now my DS outweighs my DD by 4 pounds. She is healthy just a very high metabolism they think and has a hard time gaining weight.

 

I've never heard of a weight difference necessarily meaning trouble. With ID twins, it could be TTTS - but that's also dangerous for the bigger baby. With frat twins, it could just be different genes.

My story - DS spent at least his last 10 wks in the womb starving. At 21 wks, he and DD were both measuring well ahead of dates. At 25 wks, he measured below the 2nd percentile. We managed to make it to 34 wks before delivering, with dozens of ultrasounds to make sure he was still doing ok.

Turned out that his placenta was a piece of dog doo. It was much smaller than normal, AND a third of it was clotted off. So it couldn't deliver the nutrition he needed. It's a miracle he survived.

He's catching up fast, though. At birth, DS was 2#11, DD 6#3. Last time they were weighed (about a month ago), he was about 13#, she was 14#.

So in my case, DS was at risk - but I'd think that if a size difference persists, and has no obvious cause, it may just be different genes. Especially if one parent is a smaller person than the other.

 

Mine are now 3 lbs. different but 1.5 diffent at birth. They are also 2 inches different in height where they were the same at birth. I have no knowledge about the placenta's etc. because of us being adoptive parents. I am finding this interesting!

 

In utero, my girls were always just over a lb apart. They said it was something to keep an eye on but it never really got much worse. They said their concern was that one baby may have a bigger chunk of the placenta and was therefore eating better than the other. Or something like that. Funny thing is Arwen (who was the smaller one in utero) since a couple of months after birth and still today has always been like 1-2 lbs heavier than her sister. Go figure Guess she needed to make up for the lack of food she had in utero :laughing:

 

QUOTE(Stinkpea @ Aug 27 2007, 02:44 AM) [snapback]381311[/snapback]
Have you ever seen twins with this size difference?

I heard just yesterday from another twin mama that twins with more than 1 pound size difference are considered extremely high risk for the smaller twin. (In Utero)

My two when born had over a 3 lbs size difference. Jordan was 6lbs 5 ounces and Sienna was 3 lbs 4 ounces.

Now at 6 months, Jordan is 22 lbs 5 ounces and Sienna is 15 lbs 9 ounces.

Just curious if this was common or rare?


Well, my smaller one was IUGR so they were 5"4oz and 2"12oz when born at 35 weeks. At 7 months, both are still pretty small - Evi is about 15 pounds and Elsa is just 12 pounds. And we feed them often...no one seems concerned at the doctor's office. They just said it will take awhile for Elsa to catch up. But she may also be petite and never fully catch up. Could be her genes, could be because she was IUGR. We really don't (and probably won't) know. As long as they are following a positive growth curve, that is what they care about. I would imagine it is very common for twins to be different sizes, especially if they are fraternal (mine are) because one could have rec'd the tall genes and the other the short genes...I will say that they do watch Elsa, the IUGR twin, more closely. But she is hitting all her milestones, albeit a little later than Evi. What do your doctors say?

 

Mine were 6lb9oz and 6.lb5oz at birth

now they are 32lbs and 36lbs


amanda

 

QUOTE(ReallyTiredMom @ Aug 27 2007, 04:14 PM) [snapback]381874[/snapback]
Well, my smaller one was IUGR so they were 5"4oz and 2"12oz when born at 35 weeks. At 7 months, both are still pretty small - Evi is about 15 pounds and Elsa is just 12 pounds. And we feed them often...no one seems concerned at the doctor's office. They just said it will take awhile for Elsa to catch up. But she may also be petite and never fully catch up. Could be her genes, could be because she was IUGR. We really don't (and probably won't) know. As long as they are following a positive growth curve, that is what they care about. I would imagine it is very common for twins to be different sizes, especially if they are fraternal (mine are) because one could have rec'd the tall genes and the other the short genes...I will say that they do watch Elsa, the IUGR twin, more closely. But she is hitting all her milestones, albeit a little later than Evi. What do your doctors say?


Both of mine are healthy chunks now despite DD low birth weight and being in NICU for 25 days. My son is just huge for 6 months - lol at 22.5 lbs so I don't think she will ever catch up. He is off the charts for a non-preemie baby and Sienna is exactly 50th percentile not factoring in her early birth. She has done well as before she wasn't even on the chart.!

No health risks that we know of for now. I was just curious as the size difference of other twins as we get sooo many comments. And then on the weekend another twin mom of b/g twins was telling me that she had to fly to the US for their birth because there was over a lb difference between them and it was considered high risk.

I think my two must have been IUGR but I didn't think that happened if they had seperate placentas. Am I wrong in that?

 

IUGR can definitely happen with separate placentas - that's what happened to me. There are all kinds of things that can cause it, too, not just placenta problems. Sometimes they can't pinpoint a cause.

Glad your babies are doing well now!