The woman’s body has been designed to accommodate gestations of an only embryo. Therefore, a multiple pregnancy is associated with an increased risk of experiencing certain complications during pregnancy.
This does not mean that necessarily occur complications in the pregnancy of twins, Since the majority of these children are born perfectly healthy, but if you’re expecting two or more babies should be aware of the possible risks.
The most common complications in the pregnancy of twins are:
Miscarriage in pregnancy of twins
In all pregnancies, there is some risk of suffering a miscarriage. It is believed that 20 per cent of pregnancies do not reach term. In the case of twin pregnancy risk is multiplied by increasing the odds of occurring a genetic anomaly during the first phase of pregnancy with long party maternity dresses.
One of the most frequent cases of miscarriage in pregnancy of twins is known as vanishing twin or the vanished twin syndrome. It occurs when one of the babies, still unknown cause or belief that it might be a defense mechanism, It is absorbed by the mother, the placenta or even another baby in the first few weeks of gestation.
It is possible that these cases even detect that there has been more than one conception.
Low birth weight
It is considered that a baby is born with low weight if it weighs less than 2,500 grams, while a baby of 1,500 grams or less is considered a very low birth weight infant.
The low birth weight It is related to prematurity, which we will also discuss later. These babies are more prone to physical difficulties during childbirth and the first hours of life and greater risk to suffer various respiratory diseases, especially during the first year of life. It is also associated with developmental delays.
If we make a comparison, in pregnancies only about 10 percent of babies are born with low weight, while in twin pregnancies more than half present low weight at birth. When the twin pregnancy is triple, quadruple or more, the risk increases with each baby.
Childbirth is considered to end when it occurs between the 38 and week 42 of pregnancy. The average gestation of a baby is 39 weeks, while the average duration of a twin pregnancy is 36 weeks. Approximately 30 percent of all multiple births occur before 37 weeks.
In some cases, babies are born before 32 weeks, becoming large premature and facing certain complications as difficulty to feed, to regulate body temperature and breathing, among others.
Prematurity is a situation of high-risk fetal. Aggravated with complications that may arise from the mother as for example infections, problems with the placenta, gestational diabetes or preeclampsia.
Retarded intrauterine growth
In the case of twins, it is more likely there are alterations in terms of the nutrients obtained from the placenta. Whether each is powered through your own placenta, can that one develops more than another so that a baby receives more nutrients that your brother, as if they share the same placenta and the amount of blood, and therefore nutrients, arriving in one is disproportionate with respect to the other.
This imbalance causes growth of one of the babies (or both) will restrict so that its size is not in concordance with the weeks of gestation.
It exists retarded intrauterine growth when the size of the baby is less than 10% expected for gestational age. Can have different degrees, from a delayed mild and controlled up to more serious situations in which the twin who receives less blood flow could suffer anemia and risk his life (a phenomenon known as fetal transfusion syndrome).