OP: I think drs order the fetal echos a lot because they see it as a really low-risk test and if it does happen to pick up a serious defect it can make a huge difference to the baby's health and survival. I think they see it as kind of a can't-lose.
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I had one with my DD because they found another irregularity on the 20-week US. In fact there was *no statistical association* between the irregularity they found and any cardiac defects, but the Ob wanted to get the echo because, in his words, "If there's something wrong then there might be something else wrong." :rolleyes
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By the same reasoning he wanted me to get an amnio, again even though I was at no higher risk for chromosomal abnormalities than anyone else in my age group.Â
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I declined the amnio but took the echo, mostly because I did feel the echo was pretty low-risk and didn't see a strong reason to decline it. It was normal, as one might have expected.
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But if you do have any reason to decline it (like the scheduling/baby care issues you mentioned) I'd let your dr know that and see if he can give you any convincing reason why you should have the echo. If he can't, I'd skip it and feel fine about it.
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Quote: Originally Posted by WindyMama
Originally Posted by
HappyMonkeyÂ

Isn't there always a hole between the chambers of the heart before a certain fetal age?
That's the ductus arteriosus and it usually closes after birth. Â It has nothing to do with VSDs but can also cause problems if it doesn't close after birth.
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The ductus arteriosus is not in the heart, it's a shunt between the pulmonary artery and the aorta.
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All fetuses do have a hole between the heart chambers (the foramen ovale) but it is between the atria, not the ventricles.Â
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(The fetal circulation is sort of reversed from the postnatal, because oxygenated blood comes from the placenta rather than the lungs. This requires the presence of three shunts - the foramen ovale, the ductus arteriosus, and the ductus venosus, all of which close in the hours after birth.)
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It is pretty common for the foramen ovale to fail to close completely after birth; this usually results in a small atrial septal defect which often doesn't pose a problem (although it may). A hole between the ventricles is never normal and a large one can be deadly if not repaired early.