by jenh (127 Posts), Fri Sep 13, 2013 12:43 am
I don't know if there is a good explanation yet. I've heard PE pregnancies described as a tug of war. The goal of the baby/placenta is to grow as big as possible so s/he has the best chance of survival, while the goal of the mother is to have a baby big enough to survive yet small enough to fit through her pelvis so she also can survive. In a normal pregnancy, these needs are balanced and neither side "wins". In a PE pregnancy, one side starts to win at the expense of the other, and then the other fights back harder, triggering the cascade of symptoms. So my guess is in some PE pregnancies, limiting the baby's size wins out over growing as big as possible, and in others growing as big as possible wins out, and in still others it ends in a draw with a normal-sized baby.
I can relate to how you feel. My first two were both mildly IUGR, while my twins were not. Ironic since twins are already at higher risk just from being twins. The one thing I think (but don't know for sure) made the difference is that I took low dose aspirin with the twins. My theory is that thinner blood could move more easily to and through the placenta, resulting in better nutrition. I still got PE, and a lot earlier than with my singles, but at least they grew better.
Wife to Brett 6/30/02
Mom to Ethne Joy 10/12/03, 35 weeks, severe PE
Mom to Catie Grace 12/8/06, 37 weeks, mild PE
Mom to Riley Faith and Gavin Arthur 7/7/09, 36 weeks, PIH 22 weeks, PE 31 weeks, severe post partum PE
Mom to three angels Grace (12/15/05), Ian (7/28/08), and Declan (5/23/15)