A multiple pregnancy, ie a pregnancy where the expectant mother expects more than one child, has however greater risks than a pregnancy with a fetus only.
Although not so frequent, pregnancies with more than one fetus are still quite common.
Possible Complications in Multiple Pregnancy
Gestational hypertension, characterized by high blood pressure during pregnancy, is more common in multiple gestations.
Nearly 25% of women with multiple pregnancies end up suffering from high blood pressure, unlike those with a single baby, where that percentage drops to 5/6%.
Preeclampsia is also much more common in multiple pregnancies, with a three times higher probability of occurrence than in a single pregnancy.
Often, in a multiple gestation, one or more babies may not grow at the normal rate, thus creating some complications during childbirth.
In addition, it is common for twins to be born with different sizes, even if both are healthy. This condition is called restricted fetal growth.
Another common complication in a multiple pregnancy is the occurrence of premature labor. Nearly 50% of all multiple pregnancies end before reaching 37 weeks.
One of the most serious complications is the risk of miscarriage.
Although this risk exists in all pregnancies, a multiple pregnancy, especially if it is of identical twins, is more likely.
This abortion can affect all fetuses, or in some cases, only one.
When only one fetus is aborted, it is reabsorbed by the organism. This phenomenon is called the disappeared twin syndrome.
Another serious, even rare, condition that affects pregnancies with identical twins is the fetus-fetal transfusion syndrome.
This problem is characterized by the uneven blood distribution between the fetuses, causing the debilitation of one of the twins.
Until a few years ago, this problem generally meant the death of both, however, with the latest advances, it is already possible to detect in time and correct the problem in a greater number of cases.