What are the symptoms of Oligohydramnios? The condition may be discovered during a routine scan or it may be diagnosed by an extra scan after your bump measures smaller than expected at an antenatal check. In any case, if you're found to have oligohydramnios, you'll be monitored more closely throughout the rest of your pregnancy. Also, your baby may be born with a flattened face or club foot (talipes) from having been squashed in the womb.Ī failing placenta can sometimes be caused by high blood pressure, lupus, diabetes or pre-eclampsia in the expectant mum. When you have too little, these include the possibility of an abnormality in the unborn baby, especially with the kidneys, as he may be failing to pass ingested fluid back out as urine dehydration in the mum-to-be your waters breaking early or a puncture in the amniotic sac going unnoticed your dates being wrong or a failing placenta. There are implications to having too little or too much amniotic fluid (see polyhydramnios). Sometimes certain medications, such as ACE inhibitors and ibuprofen, can cause reduced amniotic fluid. Even though in some cases no reason for a reduction in fluid is discovered, it's most commonly caused by a small tear in the amniotic sac, causing a slow leak of fluid, or the waters having broken early. Oligohydramnios is found in around 8% of all pregnancies. By 36 weeks, for example, the normal volume is between 800-1000ml. This is the term for less than expected fluid in the amniotic sac.
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