Written by Editorial Team
Conjoined twins are described as monozygotic identical twins that are partially united and do not separate completely from one another. This is chiefly due to partial division of the fertilized ovum. Chang and Eng were the first conjoined twins born in Siam (Thailand) hence conjoined twins are also called Siamese twins. The word ‘conjoin’ is derived from the Latin word “conjungere” which means ‘yoke together’ or to join.
Embryologically, conjoined twins develop if an embryo separates partially in two different individuals. The two developing fetuses are formed originally from the same embryo and remain connected physically. The connection is usually at the buttocks, chest or pelvis. Sometimes the Siamese twins share one or more internal organs. Another theory says that two different embryos fuse somehow during initial development and result in conjoined twins.
Depending upon the place where the twins are joined, conjoined twins are classified as under:
Well. speaking about the symptoms there are no specific signs that can help you identify that a pregnant women is carrying Siamese twins. But a few indicators could be as follows:
The confirm diagnosis of conjoined twins can be made with the aid of ultrasound during the first trimester itself. Ultrasounds and echocardiograms done during the second trimester help in assessing the extent of connection between the conjoined twins and also about the functioning of their internal organs.
Identical twins sharing a common amniotic sac are called monoamniotic twins are usually conjoined twins. According to ultrasonologists false positive tests can be found with ultrasounds done prior to 10 weeks of gestation.
MRI or magnetic resonance imaging scan is done to further confirm the presence of conjoined twins. MRI gives you detailed description about the exact place where conjoined twins are connected and the internal organs shared among them.
Since the exact cause of conjoined twins is not known, therefore the risk factors are also not very lucid. According to doctors the risk factors are more pronounced in twins developing from two separate eggs. The occurrence is quite rare, and it has been deduced that Latin Americans are more prone to conceiving conjoined twins than American or European couples.
The most important complication of conjoint or Siamese twins is stillbirth either inside the mother’s womb or immediately after birth. Normal vaginal delivery should not be attempted in conjoint twin pregnancy, C-section is strongly recommended. Many a times, conjoined twins are still born or die. A skilled team of doctors and surgical staff generally handles the cases of conjoined twins. Well-equipped C-section or surgical delivery can be planned for cases which are likely to survive before the due date. Sometimes if one of the twins’ dies, emergency separation should be done to save the life of the other twin.
Only about half of the conjoined twins born survive long enough to get the separation surgery done.
Once the diagnosis is made regarding the conjoined twins, close monitoring is needed to know as much as plausible about the fetuses’ anatomy, prognosis after birth and functional capabilities. This monitoring of pregnancy will enable your doctor in planning the treatment schedule for the twins. A planned C-section is well planned in advance 2 to 4 weeks before the due date. It is only after the birth the doctors will be able to say whether a separation surgery can be done or not. Here are some important points that will help the doctors determine the same:
If somehow the separation surgery is not advised by your doctor or you feel that it should not be done, do not attempt it. Comfort care for example fluids, adequate nutrition, pain relief and human touch is required to allay the condition. Spend time with your tiny babies and learn to accept them as they are. You can take the help of a counselor and talk to your spouse regarding the same.
Once the pregnancy confirms that you are carrying conjoined twins, it is very likely that you will go through many emotions regarding the future of your unborn babies. Not only is this difficult because two babies are involved, but also because their survival is a question mark. Many parents worry about the obstacles their babies will face. Difficult decisions on the part of parents are called for. Due to the rarity of the occurrence of conjoined twins, you may not find many parents who have sailed in the same boat, yet you could find some support groups consisting of parents who have either lost their babies are the babies have some life threatening conditions. Getting in touch with these organizations may help you cope with your situation, as well you may find people who can support you in difficult times.
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