Sudden intrauterine unexplained death syndrome (SIUDS): Fetal and placental autopsy is strongly recommended for evaluating the cause of pregnancy failure

Purpose: Clinical risk factors of sudden intrauterine unexplained death syndrome (SIUDS) in late pregnancy have been identified. But, the reasons for SIUDS, determined by autopsy are not well established yet. Methods: Fetuses with clinically unexplained intrauterine death were obtained from the files of the Institute of Pathology, Dept. of Perinatal- & Gynecologic Pathology of the Univeristy of Leipzig to determine the causes of intrauterine death. Results: Out of 51 cases twelve cases fulfilled the criteria of SIUDS >30th weeks of gestation without any known clinical risk factors for intrauterine death. The mea…