me personally i would not have the amnio done unless there was a chance that the baby could have something that could possible cause death such as trisomy 18 (edward's syndrome) in which the child would not survive. a very close friend of mine was four months when she found out her child had trisomy 18. children with edwards usually do not make it to term or past delivery due to the severe birth defects, etc. she elected to have an amnio. and decided to give birth at five months gestation due to the fact that they only had two options, one carry to term and have a stillborn baby because of severe and life threatening defects, or induction and deal with it then. after much deliberation and trips to a counselor decided it would be best to induce. if it were a case like that i feel that the benefits of the amino would outweigh the odds. in your case where we are talking about trisomy 21, and the child is fully capable of having life, in my opinion only, i feel that it is pointless to put yourself or your baby at that kind of risk. reason being is this, if your child does have trisomy 21, will it make a difference knowing now or just knowing that there is that possibility and getting confirmation at birth? If you intended on terminating a pregnancy based on this outcome i could see why someone would need to or want to know now, however, if you intend on loving and having that child regardless does it make since to put the two of you through a possibly risky proceedure just for confirmation before birth? in my eyes it makes no sense. as far as odds, odds are not concrete, i work in the medical field, the reason they tell you those odds is because they think it seems better to say there is a one in one hundred chance that you will miscarry instead of simply saying there is a risk of miscarriage. and this is true due to the fact that think about it, it makes you more comfortable knowing their numbers than just the fact that there are risks associated with the procedure. it usually makes anyone feel more comfortable we as humans like to have numbers and what we think is good evidence for a great outcome instead of weighing out the decision based on our thoughts and feelings. ultimately the choice is yours to make, but just do this think of how you will use the information now and weigh that against the risks you are willing to take to get that information. i hope this helps you.
jen