Total weight gain of 16 to 20.5 kg (35 to 45 lb) is consistent with a favorable outcome of a full-term twin pregnancy. This suggests that a woman who is pregnant with twins should aim for a weekly weight gain of approximately 0.75 kg (1.5 lb) during the second and third trimesters of pregnancy.
The National Academy of Medicine recommends that women who are normal-weight or underweight gain 17-25 kilograms (37-55 pounds) during a twin pregnancy, and that overweight women gain no more than 11-19 kg (24-42 lbs).
The average weight of twins is 2.5kg.
By 32 weeks, each twin weighs about 1.7kg (3.7lb) (Cole et al 2011, Zhang et al 2015) and measures about 42cm (16.5in) from head to foot (crown to heel) (Cole et al 2011). One twin may be bigger than the other (Leombroni et al 2016). Your babies' bodies are now in proportion to their heads (Moore et al 2019).
Your twins have finished their major development.
By now, your babies will have finished most of their development and start to gain weight rapidly. At 32 weeks, your babies may start to shed their lanugo, the fine hair that covered their bodies.
Your twins' organs are fully developed and in place, although their lungs are still maturing. If you go into labour prematurely, you may be offered steroids to help your babies breathe after the birth.
The worlds heaviest twins, with an aggregate weight of 12.58 kg (27 lb 12 oz), were born to Mary Ann Haskin (USA), of Fort Smith, Arkansas, USA on 20 February 1924.
The lower birth weight for second-born twins could be due to the fact that first-born twins have higher placental weights and have more often a central insertion of the umbilical cord, which are both positively correlated with birth weight.
No. 7: If you're pregnant with twins, you may gain more weight than if you're carrying one child. "With twins, mothers gain more weight as there are two babies, two placentas, and more amniotic fluid," says Al-Khan. "You also need more calories for twin pregnancies."
A twin pregnancy with two placentas and two amniotic sacs is the optimal twin pregnancy, as each baby has its own nutritional source and protective membrane. One placenta and two amniotic sacs. In pregnancies with one placenta and two amniotic sacs, you will definitely have identical twins.
The Average Birthweight of Twins
Low birth weight is defined as less than 2,500 grams or 5 pounds, 8 ounces. Very low birth weight is defined as weighing less than 1,500 grams or 3 pounds, 5 ounces.
Vaginal Birth of Twins
The good news is that even though you have two babies, you only have to labor once. Once the cervix is open, each baby will have its own pushing stage. This means you will have to push twice, but the majority of the time the second twin is born much more easily than the first.
The goal for many moms of multiples is to complete 37 weeks. This is considered term in a twin pregnancy and reaching this week of gestation increases the chance the babies will be born healthy and at a good weight.
“Having twins is not twice as hard—it's exponentially more difficult,” says Natalie Diaz, author of What To Do When You're Having Two and CEO of Twiniversity, a global support network for parents of twins.
Most often, fetuses known in utero as twin A are also first born and thus retain their label. However, this is not always the case, such that the twin A newborn was previously labeled twin B in utero and vice versa.
Depending on where they implant, one twin may get a smaller share of the placenta than the other, resulting in less blood flow and nutrition to one fetus, and more to the other. This is called unequal placental sharing. As a result, the twins may grow differently.
Monoamniotic-monochorionic Twins
This is the rarest type of twin, and it means a riskier pregnancy as the babies can get tangled in their own umbilical cords. If you have monoamniotic-monochorionic twins, your healthcare provider will monitor your pregnancy closely.
Monochorionic Monoamniotic Twins
These types of twins share the same chorion, placenta and amnion. This is the rarest type of twin pregnancy – only affecting 1 in every 100 sets of identical twins – and it comes with a higher risk of complications because the foetuses can get tangled in their umbilical cords.
Such twins, known scientifically as 'MoMo', an abbreviation for monoamniotic-monochorionic, are some of the rarest types of twins, making up less than one percent of all births in the United States, noted the statement. It also stressed that such MoMo twin pregnancies have a high risk of fetal complications.
Caesarean section surgery usually takes 30-60 minutes, although the entire process takes a few hours. There'll be many people in the operating theatre with you. You can usually have a support person.
The time between giving birth to your first and second baby varies from woman to woman, but the second baby is usually delivered within about 30 minutes to an hour after the first. In very rare cases, some women deliver 1 twin vaginally and then need a caesarean section to deliver the second twin.
About 1 in 3 of all sets of twin births are vaginal births. You may choose to have an elective caesarean, or your doctor may recommend a caesarean section because of potential complications. Even if you plan a vaginal birth, you may end up having an emergency caesarean section due to complications during labour.
Carrying twins will obviously make it larger, but not in an exaggerated way. One can say that a twin belly will be 20% larger than a single pregnancy belly. Sometimes, mothers won't even notice that they're carrying twins, regardless of the size of their bellies.