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Related Experiment Video

Updated: Jun 25, 2026

Model Surgical Training: Skills Acquisition in Fetoscopic Laser Photocoagulation of Monochorionic Diamniotic Twin Placenta Using Realistic Simulators

Model Surgical Training: Skills Acquisition in Fetoscopic Laser Photocoagulation of Monochorionic Diamniotic Twin Placenta Using Realistic Simulators

Published on: March 21, 2018

Twin-twin transfusion syndrome.

A C Rossi¹, V D'addario

¹IV Clinic of Obstetrics and Gynecology, University of Bari, Bari, Italy. acristinarossi@yahoo.it

Minerva Ginecologica

|March 4, 2009

Summary

Twin-twin transfusion syndrome (TTTS) is a placental vascular disorder in monochorionic pregnancies. Selective laser photocoagulation of placental vessels (SLPCV) shows efficacy in treating TTTS, with a new staging system proposed.

Area of Science:

Perinatology
Maternal-Fetal Medicine
Fetal Surgery

Background:

Twin-twin transfusion syndrome (TTTS) is a serious complication unique to monochorionic pregnancies.
It arises from abnormal placental vascular connections (anastomoses) leading to unequal blood flow between twins.
Diagnosis involves ultrasound detection of amniotic fluid imbalances (oligohydramnios and polyhydramnios).

Purpose of the Study:

To review the effects of selective laser photocoagulation of placental vessels (SLPCV) on fetal growth and circulation in TTTS.
To explore prognostic factors associated with TTTS.
To discuss the limitations of the Quintero staging system and propose a new staging system (Rossi staging system).

Main Methods:

Literature review focusing on SLPCV efficacy in TTTS treatment.

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

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Published on: September 5, 2011

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Last Updated: Jun 25, 2026

Model Surgical Training: Skills Acquisition in Fetoscopic Laser Photocoagulation of Monochorionic Diamniotic Twin Placenta Using Realistic Simulators

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Published on: March 21, 2018

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

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

Published on: September 5, 2011

Analysis of studies on prognostic factors in TTTS.

Critical evaluation of current TTTS staging systems and proposal of a new system.

Main Results:

Growing evidence supports SLPCV as a highly efficacious therapy for TTTS compared to amnioreduction.
The review details the impact of SLPCV on fetal growth and circulation.
A new staging system, the Rossi staging system, is proposed for assessing TTTS severity.

Conclusions:

SLPCV is an effective treatment for TTTS, demonstrating superior outcomes.
Further research is needed to clarify the natural history of TTTS and refine prognostic factors.
The proposed Rossi staging system aims to improve TTTS severity assessment at presentation.