Risk for the survivors of "vanising twin" phenomenon

There are many risks for the survivors of a "vanishing twin" pregnancy, see here..

Research from the 2010 Annual European Society of Human Reproduction and Embryology (ESHRE).

For instance, vaginal bleeding in the first trimester  ( sign of a lost twin) increased the risk of

• preeclampsia,
• premature or very premature delivery and
• more than doubled the risk of low birth weight and very low birth weight.
• These risks were further increased after detection of an intrauterine haematoma.

The survivor in a vanishing twin pregnancy (a twin pregnancy in which one twin miscarries very early in the pregnancy) was at increased risk of

• premature or very premature delivery,
• had double the risk of low birth weight,
• three times the risk of very low birth weight, and
• more than three times the risk of perinatal death.

 The researchers reviewed previously published studies and determined that early pregnancy complications increase the risk that the pregnancy will have complications and future pregnancies are at higher risk also.

And that is not to mention the psychological difficulties.......