TY - JOUR T1 - An Investigation on the Fetal Death via Study of Placenta TT - بررسی علت مرگ جنین از طریق مطالعه جفت JF - RUMS_JOURNAL JO - RUMS_JOURNAL VL - 9 IS - 1 UR - http://journal.rums.ac.ir/article-1-692-en.html Y1 - 2010 SP - 37 EP - 46 KW - Fetal KW - Death KW - Placenta N2 -   Background and Objectives: Vital signs, including breathing, heart beat or involuntary movement of voluntary muscles, during child birth show that the fetus is healthy. Fetal death or still birth is one of the most complicated issues in medical science. Several factors contribute to still birth which are divided into maternal, fetal and placental groups. The present study deals with placental factors.   Materials and Methods: In this cross-sectional study, sixty placenta were investigated out of which thirty belonged to mothers with healthy fetuses (comprising control group), and the rest belonged to mothers with dead fetuses (experimental group). Having prepared the slides of the placentae in serial section with a thickness of five micrometers, the researcher conducted a histopathological study on calcification, congestion, vasculitis, perivascular fibrosis, fibronoid necrosis, vascular thrombosis in villi arteries and the presence of Hofbauer cells in the placenta. T test was used to analyze the data.   Results : The results showed a significant increase (p M3 ER -