These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: Failure of physiologic transformation of the spiral arteries in the placental bed in preterm premature rupture of membranes.
    Author: Kim YM, Chaiworapongsa T, Gomez R, Bujold E, Yoon BH, Rotmensch S, Thaler HT, Romero R.
    Journal: Am J Obstet Gynecol; 2002 Nov; 187(5):1137-42. PubMed ID: 12439491.
    Abstract:
    OBJECTIVE: The purpose of this study was to determine whether failure of physiologic transformation of the spiral arteries occurs in patients with preterm premature rupture of membranes (PROM). STUDY DESIGN: A cross-sectional study was designed to examine the histopathologic findings in the placental bed and placenta of patients with preterm PROM, preeclampsia, and normal women at term. Immunohistochemistry with cytokeratin 7 and periodic acid-Schiff (PAS) were used to detect trophoblast and fibrinoid and to diagnose failure of physiologic transformation of the spiral arteries. RESULTS: One hundred thirteen cases met the inclusion criteria, 59 from patients with normal pregnancies, 31 with preterm PROM, and 23 with preeclampsia. The mean number of the spiral arteries with failure of physiologic transformation of the myometrial segment was significantly higher in patients with preterm PROM and preeclampsia than in normal pregnant women at term (P =.006 and P <.0001, respectively). In contrast, the mean number of the spiral arteries with failure of physiologic transformation of the decidual segment of the spiral arteries in the basal plate of the placenta was not significantly different in patients with preterm PROM from that in normal pregnant women (P >.05). Placentas from patients with preterm PROM had a higher frequency of vascular lesions than those from normal pregnant women (P =.02). CONCLUSION: Defective placentation, defined as failure of physiologic transformation of the myometrial segment of the spiral artery, is frequently present in preterm PROM.
    [Abstract] [Full Text] [Related] [New Search]