Ultrasound assessment of placental function: the effectiveness of placental biometry in a low-risk population as a predictor of a small for gestational age neonate

作者：McGinty Patricia; Farah Nadine; Dwyer Vicky O; Hogan Jennifer; Reilly Amanda; Turner Michael J; Stuart Bernard; Kennelly Mairead M^*

来源：Prenatal Diagnosis, 2012, 32(7): 620-626.

DOI：10.1002/pd.3870

Objective The aims of the study were to establish reference ranges for placental length and thickness in a low-risk obstetric population and to assess the likelihood of a small for gestational age (SGA) neonate on the basis of placental length at 1824?weeks%26apos; gestation. Methods Placental length and thickness were measured by two sonographers in 520 singleton pregnancies. Uterine artery Doppler studies and a placental morphological assessment were also performed. Placental size was correlated with the birthweight centiles at delivery. Results A placental length %26lt;10th centile between the gestational age of 18 and 24?weeks is a significant factor associated with SGA neonate [odds ratio (OR)?=?2.8, 95% CL, 1.16.9]. An abnormal uterine artery Doppler is a significant factor for SGA neonate (OR?=?3.4, 95% CL, 1.67.4). There was a weak relationship between cord insertion %26lt;2?cm from the placental margin and an SGA neonate (OR?=?1.8, 95% CL, 0.48.2). Conclusion We have provided reference ranges for placental length and thickness from 18 to 24?weeks%26apos; gestation. A single measurement of placental length incorporated into the anatomy scan may assist in the early detection of a group at risk of delivering an SGA neonate.

• 出版日期2012-7