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Related Concept Videos

Ovarian Cycle01:27

Ovarian Cycle

The menstrual cycle includes a critical component known as the ovarian cycle, which undergoes two main phases each month—the follicular phase and the luteal phase. The follicular phase is variable and averaging around 14 days. Ovulation, triggered by a surge in luteinizing hormone (LH), marks the transition between the two phases. The second phase, the luteal phase, is relatively consistent, lasting approximately 14 days, and is marked by the activity of the corpus luteum. While a cycle length...
Fetal Circulation01:14

Fetal Circulation

Fetal circulation is a unique system that facilitates the exchange of gases, nutrients, and waste products between the developing fetus and the mother. This intricate process takes place through a special organ called the placenta.
Two umbilical arteries transport blood from the fetus to the placenta. At the placenta, the blood absorbs oxygen and nutrients while simultaneously eliminating waste products. This oxygen-enriched and nutrient-rich blood then returns to the fetus through one...

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Related Experiment Video

Updated: Jul 16, 2026

Guide Wire Assisted Catheterization and Colored Dye Injection for Vascular Mapping of Monochorionic Twin Placentas
09:04

Guide Wire Assisted Catheterization and Colored Dye Injection for Vascular Mapping of Monochorionic Twin Placentas

Published on: September 5, 2011

[Specific aspects of monochorionic pregnancies].

Edwin Quarello1, Yves Ville

  • 1Service de gynécologie-obstétrique, centre hospitalier intercommunal de Poissy, 78300 Poissy.

La Revue Du Praticien
|March 14, 2007
PubMed
Summary

Monochorionic pregnancies face high risks from placental vascular anastomoses, potentially causing severe complications for both fetuses. Early ultrasound is crucial for diagnosing monochorionicity and monitoring these high-risk pregnancies.

Area of Science:

  • High-risk pregnancies
  • Maternal-fetal medicine
  • Perinatology

Context:

  • Monochorionic pregnancies involve shared placental vasculature, increasing risks.
  • Placental vascular anastomoses can disrupt fetal hemodynamics.
  • Complications include twin-to-twin transfusion syndrome and twin-reversed-arterial-perfusion sequence.

Purpose:

  • To highlight the risks associated with monochorionic pregnancies.
  • To emphasize the role of placental vascular anastomoses in fetal complications.
  • To underscore the importance of ultrasound in managing these pregnancies.

Summary:

  • Monochorionic pregnancies are complicated by placental vascular connections (anastomoses) linking fetal circulations.
  • These anastomoses can lead to hemodynamic imbalances, morbidity in survivors after co-twin demise, and specific syndromes like TTTS or TRAP.

More Related Videos

Accurate and Simple Evaluation of Vascular Anastomoses in Monochorionic Placenta using Colored Dye
09:52

Accurate and Simple Evaluation of Vascular Anastomoses in Monochorionic Placenta using Colored Dye

Published on: September 5, 2011

Related Experiment Videos

Last Updated: Jul 16, 2026

Guide Wire Assisted Catheterization and Colored Dye Injection for Vascular Mapping of Monochorionic Twin Placentas
09:04

Guide Wire Assisted Catheterization and Colored Dye Injection for Vascular Mapping of Monochorionic Twin Placentas

Published on: September 5, 2011

Accurate and Simple Evaluation of Vascular Anastomoses in Monochorionic Placenta using Colored Dye
09:52

Accurate and Simple Evaluation of Vascular Anastomoses in Monochorionic Placenta using Colored Dye

Published on: September 5, 2011

  • Late embryonic division can result in monoamniotic pregnancies, conjoined twins, and unique complications.

    • Impact:

    • Early diagnosis of monochorionicity via first-trimester ultrasound is vital.
    • Regular ultrasound screening and monitoring are essential for detecting and managing specific complications.
    • Improved management strategies can mitigate adverse fetal and neonatal outcomes.