What should my rwin be

The other two-thirds split after they attach to the wall of the womb. As a result, they share a placenta. The technical name for this is monochorionic. In a very small number of identical twins, splitting might happen even later. In this case, both twins share an inner sac , called the amnion, in addition to sharing a placenta.

The technical name for this is monoamniotic twins. For example, a twin who receives less blood from a shared placenta might weigh less at birth. Sharing a placenta means that twins share a blood supply during pregnancy.

Sometimes the blood supply is shared unequally, which can cause health problems for both twins. Women who are pregnant with twins sharing a placenta need to be checked more often than women with twins with separate placentas. Frequent checks can pick up early on any potential complications. Twins sharing an inner sac monoamniotic are also at a higher risk of complications during pregnancy because of the chance that their umbilical cords might tangle and cut off their blood supply.

These twins are checked even more closely. Medical professionals often recommend that these twins are born earlier than other types of twins. My daughter is like her freelance writer mother — studying is not really her thing. The kids could be tested that year and would enter the program—or not—in first grade. Other parents apparently had. In the beginning, my husband and I laughed at the idea of advanced learning in the first grade. What first grader wants to practice math and reading on his own during the evenings and weekends?

My son. And then there was my daughter, who was right on track, but, like most kids her age, was happy to leave school stuff at school. I wanted to let my son move into the advanced program because I knew he would love it and thrive. How was I going to separate her from her brother because he could do something better? As a child I never felt smart enough. During delivery is when things differ significantly. This is a safety precaution known as a double setup.

Following the vaginal delivery of the first baby, there is a small risk of an emergency cesarean section for the second baby. There is also the possibility of the second twin being delivered breech, which is a safe form of vaginal delivery if the obstetrician is experienced in this type of delivery.

Of women giving birth to twins over 32 weeks, only about 4 percent who try for a vaginal delivery will have a combined vaginal and cesarean section delivery. Although being pregnant with twins can seem very different, your doctor will treat your pregnancy like any other unless a complication occurs.

One of the best things you can do to protect and improve your health is to stay informed. Do twins share a placenta and an amniotic sac? Here are three major possibilities that exist: Two placentas and two amniotic sacs. 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.

Doctors have identified a few rare cases of dizygotic twins who experienced TTTS, probably due to the reproductive technology used to conceive them.

Twins diagnosed with TTTS are most likely monozygotic identical. Similarly, if twins were identified as monoamniotic in the womb, they are monozygotic. Only monozygotic twins develop within a single, shared amnion. If you underwent prenatal testing that provided a comparable sample of DNA from each baby, it is possible that the results could confirm the zygosity of the babies. Amniocentesis, for example, can confirm zygosity, so be sure to ask your doctor.

Individuals that look remarkably alike, with incredibly similar features, are more likely to be identical. However, appearance isn't a conclusive assessment of zygosity.

Many dizygotic twins share similar characteristics family resemblance while many monozygotic twins don't look alike due to environmental influences.

There are many reasons why identical twins are different. Zygosity can be determined through blood testing, placental analysis or with an at-home DNA testing kit. It's nice to have an answer to the endless questions about twin type. But more importantly, the answer could have implications for medical situations. Ultrasound or placental analysis is often inconclusive.

While a doctor can make an assessment during pregnancy, many wrongly conclude that babies are fraternal simply because there are two placentas. If the clues are inconclusive, the only way to determine zygosity is with DNA testing.

DNA testing is the most reliable way to confirm zygosity and know for sure. If it's important for you to know, order a kit, follow the directions, and send in a sample for analysis. If you can't afford to purchase a DNA test kit, you may be able to get tested for free by participating in a research study.

Or contact a "parents of multiples" organization such as Multiples of America or local research university. Get diet and wellness tips to help your kids stay healthy and happy. Are my twins identical: parents may be misinformed by prenatal scan observations. American Academy of Pediatrics. The difference between identical and fraternal twins. Updated November 7, National Human Genome Research Institute. Fraternal twins. Monozygotic twins of opposite sex. Cytogenet Cell Genet.

The Tech Interactive.