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Twin trend with IVF; Good or Bad?

Tuesday 23 January 2018

Twin trend with IVF

Twin trend with IVF; Good or Bad?

The hot subject that is in discussion among couples is about having more embryos at once. This means trying for twins or more. Already many couples experience distress over many unsuccessful attempts to get conceived and after getting conceived they try to transfer two embryos to enhance the chances of success rate. This scenario of delivering two babies at a time may be an exciting experience for the couple but behind this there are many complications associated with multiple embryo transfers. 

Generally, in the process of IVF treatment, a fertilized embryo is inserted into the uterus and in a period of 6-12 days embryo gets attached to the outer surface of uterine. In this process if any complication occurs then embryo dies and will lead to failure of IVF. So, the couple again tries with this procedure until they hear the success. As because of high cost for IVF treatment they decide to have 2 or 3 embryo transfers at a time. The blind reason behind this is that they anticipate that least one embryo will get attach itself to the uterine surface and develop into foetus.

Many facts show that complication with twin births is 25 percent and that of having multiple pregnancies or more is 3 percent. 

Risk factors with multiple births:

Even though there are many serious risks with multiple births, many couples opt to give birth to twins in a single delivery. This increases the multiple birth rate by 70 percent from 1980 to till date. 

Carrying twins can be very difficult for your body and in the third trimester doctors generally suggest to have more bed rest than physical activity for the mother. There will more chances of having a premature delivery with twins. Premature birth may keep the babies at risk and the mother has to be an utmost care during her third trimester. 

Mothers pregnant with twins are easily prone to high risk for some medical conditions like preeclampsia, gestational diabetes and placental abruption. 

More than this, the other pregnancy risks that a mother should face are:

Reduced birthweight: Almost half of twins are born with a less weight of 5 1/2 pounds. So babies who are delivered before 32 weeks and who weighs below 3 1/3 pounds are easily prone to permanent health problems like mental retardationcerebral palsyand vision and hearing loss.

Twin-Twin Transfusion Syndrome (TTTS): Nearly 10 percent of the identical twins who have a common placenta will have TTTS.  During this, when two babies share same placenta there will high blood flow for one baby and other too little. 

Cesarean section: Women who carry multiple embryos have the increased chance of having cesarean section rather than having normal delivery. This may require a longer period of improvement and sometimes this can increase the chance of hemorrhage during and after delivery.

Pre-eclampsia: There is more chance for developing pre-eclampsia for women who are in the decision to have twins. Pre-eclampsia may result in increased blood-pressure, protein in the urine and swelling which is unsafe for both mother and baby. 

As there are many difficult situations with twin trend, the development in technology has turned this complicated situation to be easier. The technology of blastocyst stage culture and transfer increases the success rate of multiple pregnancies and reduces the risk associated with it. By growing embryos for five days in the laboratory and allowing them to reach the blastocyst stage of development, fertility doctors can decide that which embryos have the high possibility of implantation. 

With all these complications, doctors prefer to go for the transfer of only one embryo (that is called as “elective single embryo transfer” or eSET) when appropriate, in order to minimize any risk.