Wolf H, Oosting H, Treffers P E
Am J Obstet Gynecol. 1987 May;156(5):1191-4. doi: 10.1016/0002-9378(87)90141-4.
A method for placental volume measurement by parallel ultrasonographic section scans is presented. An interval of 2 cm between the scans proves most effective. During measurement the patient should lie in the lateral position to prevent caval vein compression. The precision of the method as estimated by the SE is between 10 and 50 ml. The volume measured reflects both placental cellular mass and placental circulating blood volume. Drainage of the latter after delivery causes a fairly large difference between antepartum placental volume and postpartum placental weight (volume/weight ratio 1:6).
本文介绍了一种通过超声平行切面扫描测量胎盘体积的方法。扫描间隔2厘米最为有效。测量时患者应侧卧以防止腔静脉受压。用标准误估计该方法的精度在10至50毫升之间。所测体积反映了胎盘细胞质量和胎盘循环血容量。分娩后后者的排出导致产前胎盘体积与产后胎盘重量之间存在相当大的差异（体积/重量比为1:6）。
