Pretty soon the twins will start to deviate from the singleton length and weight norms. I found a good article on what to expect.
Twins: Fetal Lengths and Weights at Different Gestations
by Lisa Rodriguez, R.N. and Marjorie Greenfield, M.D.
Most people are intrigued with the idea that humans are capable of carrying more than one baby through a pregnancy. Not surprisingly, this interest is even more pronounced in the parents-to-be of twins, who likely are curious about how their pair's growth and development differs from that of singletons.
During the first two trimesters of the pregnancy, twins typically develop at the same rate as single babies. In the third trimester, however, the amount of weight gained by the two infants together is about equal to the amount of weight gained by the one infant in a singleton pregnancy. In other words, while a singleton's weight climbs until 40 weeks' gestation before slowing down, multiples have deceleration of growth much earlier--seen typically in twins at 30 to 32 weeks. Consequently, twins and other multiples tend to be smaller than singletons at the same gestational age.
Early in the third trimester, twins actually may have an advantage when it comes to growth, because they generally develop slightly faster than singletons do until about 30 weeks. For example, a set of twins delivered at 30 weeks will probably have better lung development and may have fewer problems due to a premature birth than a singleton born at the same gestation.
by Lisa Rodriguez, R.N. and Marjorie Greenfield, M.D.Most people are intrigued with the idea that humans are capable of carrying more than one baby through a pregnancy. Not surprisingly, this interest is even more pronounced in the parents-to-be of twins, who likely are curious about how their pair's growth and development differs from that of singletons.
During the first two trimesters of the pregnancy, twins typically develop at the same rate as single babies. In the third trimester, however, the amount of weight gained by the two infants together is about equal to the amount of weight gained by the one infant in a singleton pregnancy. In other words, while a singleton's weight climbs until 40 weeks' gestation before slowing down, multiples have deceleration of growth much earlier--seen typically in twins at 30 to 32 weeks. Consequently, twins and other multiples tend to be smaller than singletons at the same gestational age.
Early in the third trimester, twins actually may have an advantage when it comes to growth, because they generally develop slightly faster than singletons do until about 30 weeks. For example, a set of twins delivered at 30 weeks will probably have better lung development and may have fewer problems due to a premature birth than a singleton born at the same gestation.
And here's a picture Edie took of me on Saturday in front of Lake Union.
Oooh, interesting! Thanks for the info. I had no idea and that makes total sense. =) So nice to see you again. I am a lucky duck.
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