Nagpal Kashika, Mittal Pratima, Grover Shabnam Bhandari
1Department of Obstetrics and Gynaecology, Vardhaman Mahavir Medical College and Safdarjang Hospital, New Delhi, 110029 India.
2Department of Radiology and Vice Principal, Vardhman Mahavir Medical College, Safdarjung Hospital, New Delhi, 110029 India.
J Obstet Gynaecol India. 2018 Oct;68(5):349-354. doi: 10.1007/s13224-017-1038-8. Epub 2017 Sep 1.
Placenta is the connecting organ between the mother and the fetus. It supplies oxygen and all the necessary elements for the growth and development of the fetus. In normal pregnancy, the growth of the placenta remains concordant with the growth of the fetus. The sonographic assessment of placenta can give information about the nutritional status of the fetus. It is known that normal placental thickness approximately equals gestational age. It is historically documented that placental weight is one-fifth of the fetal weight and abnormally thin or thick placenta is associated with increased incidence of perinatal morbidity and mortality. However, there are very few studies correlating placental thickness with Neonatal outcome.
To correlate ultrasonographic placental thickness at 32 and 36 weeks pregnancy with neonatal outcome. To propose placental thickness as a simple test for prediction of neonatal outcome.
Placental thickness at 32 and 36 weeks was measured by ultrasound, in 130 pregnant mothers with confirmed dates and uncomplicated singleton pregnancy. Placental thickness was categorized as normal (10th-95th percentile), thin (<10th percentile) and thick (>95th percentile) at each stage and was correlated with birth weight and neonatal outcome.
Neonatal outcome was good in women with normal placental thickness (10th-95th percentile) at 32 and 36 weeks and was compromised in women with thin (<10th percentile) and thick (>95th percentile) placentae.
Placental thickness at 32 and 36 weeks corresponds well with gestational age and is a good prognostic factor in assessing neonatal outcome. Therefore, placental thickness should be measured in addition to biometric parameters in antenatal women undergoing ultrasound.
胎盘是母亲与胎儿之间的连接器官。它为胎儿的生长发育提供氧气和所有必需元素。在正常妊娠中，胎盘的生长与胎儿的生长保持一致。胎盘的超声评估可以提供有关胎儿营养状况的信息。已知正常胎盘厚度大致等于孕周。历史文献记载胎盘重量是胎儿体重的五分之一，胎盘过薄或过厚与围产期发病率和死亡率的增加有关。然而，很少有研究将胎盘厚度与新生儿结局相关联。
将妊娠32周和36周时超声测量的胎盘厚度与新生儿结局相关联。提出将胎盘厚度作为预测新生儿结局的一项简单检查。
对130例孕周确定且为单胎妊娠无并发症的孕妇，在妊娠32周和36周时通过超声测量胎盘厚度。每个阶段胎盘厚度分为正常（第10至95百分位数）、薄（<第10百分位数）和厚（>第95百分位数），并与出生体重和新生儿结局相关联。
妊娠32周和36周时胎盘厚度正常（第10至95百分位数）的孕妇新生儿结局良好，而胎盘薄（<第10百分位数）和厚（>第95百分位数）的孕妇新生儿结局较差。
妊娠32周和36周时的胎盘厚度与孕周密切相关，是评估新生儿结局的良好预后因素。因此，在接受超声检查的产前妇女中，除了生物测量参数外，还应测量胎盘厚度。
