What is oligohydramnios sequence?
During pregnancy a fetus is bathed in amniotic fluid. Not having enough amniotic fluid is a condition referred to as oligohydramnios. Amniotic fluid is critical. It helps the fetus properly develop. Oligohydramnios is associated with many different conditions affecting a fetus’s organs.
OligoHydramnios序列是在寡盐胺发生时在妊娠期间发生的病症。oligoHydramnnnnios序列或陶器的综合征，是一系列导致胎儿严重异常的事件。名称是指伊迪斯波特博士，首先将胎儿的外表或具有条件的新生儿的物理出现。
Not all fetuses develop abnormalities because of low levels of amniotic fluid. The occurrence of Oligohydramnios sequence depends a few factors: the stage of pregnancy and level of amniotic fluid. The later stages of pregnancy appear to be the most troublesome. If oligohydramnios sequence occurs at that time, the more serious the condition can be.
Oligohydramnios发生在妊娠的约4％。并非所有病例都涉及液体的严重减少。根据“的情况”
羊水为生长婴儿提供了几个关键目的。这些包括：
- aid in the growth and development of the baby’s lungs
- cushion and protect the baby
- help the baby’s muscles and bones develop
- 保持脐带被压缩，这可能会影响血液流量和营养给宝宝
- 保持恒定温度
- lubricate the fetus’s body parts and prevents them from fusing
羊水还有营养，激素和抗体，有助于抵抗感染。根据左右的怀孕36周，女性通常在子宫内有大约1夸脱的羊水，据3月的Dimes..
并不总是可以确定导致羊水水平低的原因。一种潜在的原因是羊水的连续泄漏，因为羊膜已经破裂。
After the 20-week point of development, a baby’s urine largely makes up amniotic fluid. The baby’s kidneys are responsible for filtering fluids and producing urine. If the kidneys don’t function properly, the baby can’t make enough urine. This will result in insufficient amount of amniotic fluid. The chain of events resulting from kidney defects (such as malformation, or failure) may lead to oligohydramnios sequence.
有时遗传突变会影响肾脏的发展。这些异常的例子可能包括：
- autosomal dominant多囊肾
- autosomal recessive polycystic kidney disease
- 遗传性肾脏anypsplasia
Having高血压要么糖尿病before a woman becomes pregnant can also contribute to oligohydramnios sequence.
oligohydramnios序列最常影响男性婴儿。麦类肾功能衰竭的某种原因似乎是一种遗传原因。
某些肾脏疾病的家族史可能会增加孕妇在怀孕期间培养寡少少杂毒序列的风险。
当羊水过低时，可能发生几种胎儿症状。
有限的羊水使氨的腔smaller than normal. This constricts the fetus, which interferes with normal development and growth. The symptoms of oligohydramnios sequence in a fetus can include facial abnormalities including:
- 广阔的鼻桥
- 广泛间隔的眼睛
- 低套耳朵
当OligoHydramnios序列是由胎儿肾衰竭引起的时，出生后的尿量低或不存在。有限的羊水也干扰了正常的肺部发育。如果婴儿通过出生生存，他或她可能会呼吸困难。
医生可以用超声诊断寡盐胺序列。超声波可以检测胎儿中羊水和异常肾发育的低水平。
泄漏的羊水是寡盐胺序列的另一个可能的迹象。但是，并不总是发生泄漏。
孩子出生后,肺和ki的x射线dneys can help a doctor check for abnormal development. This can help diagnose oligohydramnios sequence in a newborn.
There’s currently no cure for oligohydramnios sequence. Sometimes doctors will perform an amnioinfusion, which involves infusing fluid into the womb. The fluid doesn’t contain the same hormones and antibodies as a mother’s amniotic fluid. But, it does cushion the baby and gives it more time to develop. This infusion can increase the risk for infection and may not be enough to help the lungs develop.
In many cases, the condition can cause a miscarriage. In other cases, the fetus is stillborn or dies shortly after birth. If a baby survives until birth, he or she may need resuscitation.
OligoHydamnnios序列的预后通常非常差。条件通常是致命的。由于婴儿的肺部由于缺乏羊水而无法正确发展，因此婴儿经常经历呼吸窘迫。
Effects associated with oligohydramnios sequence include:
- 出生缺陷，如不当工作的肾脏
- miscarriage, or fetal death before 20 weeks of pregnancy
- 在婴儿开发37周之前早产或出生
- stillbirth, where a baby dies in the womb before they are 20 weeks old
如果婴儿正在经历oligohydramnios序列，并且婴儿开发得足够出生，医生可能建议通过婴儿通过剖宫产(C-section). This can allow the baby’s lungs to mature. Survival rates most often depend upon a baby’s lung development. Babies may also experience renal failure. The baby may be able to receive dialysis to act as an artificial kidney and perhaps receive a kidney transplant as they get older.
不幸的是，目前没有已知的oligohydramnios序列预防。