Tuesday, June 22, 2010
Graduation
Sunday, June 20, 2010
Off topic
Friday, June 18, 2010
Twin trivia
While at the Perinatologist last week, I got a fast track biology lesson in twins. In case you are interested, here's what I learned:
There is 1 type of fraternal twin and 4 types of identical:
fraternal= 2 eggs, 2 sperm separately fertilized and they have their own placenta and amniotic sac with a fairly thick membrane separating them.
identical= 1 egg and 1 sperm fertilized and split during cell division. The following are the types of identical twins:
di/di= zygote split during cell division 1-4 days after fertilization, and they have their own placenta and amniotic sac.
mo/di= zygote split during cell division 4-8 days after fertilization, and they have their own amniotic sac but share a placenta. High risk of twin to twin transfusion syndrome (TTTS).
mo/mo= zygote split during cell division 8-11 days after fertilization, and they share both amniotic sac and placenta. High risk of cord entanglement.
conjoined twins= zygote attempted to split 12 days after fertilization, share amniotic sac, placenta and body part(s).
--Also interesting to note that the reason my hCG numbers didn't indicate twins from a blood test taken 14 and 16 days past ovulation may be because they split later in the process.
Friday, June 11, 2010
Fluke, fluke, fluke
And guess what? It was also determined that we are having IDENTICAL TWINS. Now ideally you'd like for your twins to have their own amniotic sac and their own placenta. These babies have their own sac but share the placenta. Which leads me to another--yes, you guessed it, risk. There's a 1 in 10 chance these twins will have TTTS. I can't find a web site that doesn't completely freak me out, so I'd rather not link to anything yet and trigger mass freak out. All I will say is that if this happens to be the case, I will be going through laser therapy (surgery) on the veins within the placenta that control the blood and nutrients to the babies. But we'll go down that road if we have to. Today I'm not going there.
To end on a happy note (as if IDENTICAL TWINS doesn't put a smile on your face) the Dr. also reassured me that at this point I have a minimal chance of miscarrying one or both of the babies, due to all the things they saw on the ultrasound today. Doesn't mean it couldn't happen, but it's not something that should keep me up at night, spotting or not.