[Effects of subchorionic hematoma on pregnancy outcome: a meta analysis].

Abstract To study the effects of subchorionic hematoma (SCH) on pregnancy outcome. We searched publications from January 2000 to July 2015 for cohort and case-control studies evaluating subchorionic hematoma and perinatal outcomes, including spontaneous abortion, premature delivery and delivery mode. Data of 6 articles analyzed by meta-analysis showed that SCH group had higher rate of spontaneous abortion, while no difference in premature delivery and delivery mode, compared with threatened abortion group. Subchorionic hematoma increases the risk of spontaneous abortion, while premature delivery rate and delivery mode are not affected if the pregnant women can continue the pregnancy.