Pearlstone M, Baxi L
Department of Obstetrics and Gynecology, Sloane Hospital for Women, Columbia Presbyterian Medical Center, New York, NY 10032.
Obstet Gynecol Surv. 1993 Feb;48(2):65-8.
A review of the English literature on subchorionic hematoma (SCH) is presented. Fourteen studies are reviewed. The incidence of SCH varied greatly among studies from 4 to 48 per cent. Small SCH tend to be more common in the first trimester and appear to pose no added risk to the ongoing pregnancy. Conversely, SCH in the second trimester often are larger and may be associated with an increased risk of preterm delivery. The etiology of these hematomas remains unclear. Pathological changes that might contribute to their formation are reviewed. Larger studies with controls, including data on the incidence of SCH in a population of normal obstetric patients are needed.
本文对英文文献中关于绒毛膜下血肿（SCH）的研究进行了综述。共回顾了14项研究。各研究中SCH的发生率差异很大，从4%到48%不等。小型SCH在孕早期往往更为常见，似乎不会给持续妊娠带来额外风险。相反，孕中期的SCH通常更大，可能与早产风险增加有关。这些血肿的病因尚不清楚。本文对可能导致其形成的病理变化进行了综述。需要开展更大规模的对照研究，包括正常产科患者群体中SCH发生率的数据。
