Acardiac twin pregnancies part V: Why does an acardiac twin with renal tissue produce polyhydramnios?

Multifetal gestation is often a high-risk pregnancy and especially the monochorionic twin pregnancy significantly contributes to fetal morbidity and mortality. Acardiac twinning, earlier known as chorioangiopagus parasiticus, is the most extreme manifestation of this condition. An acardiac twin is a rare complication of multifetal pregnancy, in the literature reported at an incidence of 1% of monochorionic twin pregnancies, i.e. 1 of 35,000 pregnancies. Often results from abnormal placental vascular anastomoses. This leads to twin reversal arterial perfusion with complex pathophysiology. Here authors present a case of acardiac twin pregnancy presented at 26 weeks with the ultrasonography report suggested?? Placental teratoma of size 11×11×13 cm with polyhydramnios as there was no reason to suspect something else as the picture described in the USG report with the polyhydramnios was fitting with the diagnosis of placental teratoma but as the scan was done at taluka place and the images provided were not clear authors decided to confirm the diagnosis from fetal medicine specialist as MTP was not the option for the patient as she was 28 weeks who confirmed that as a case of acardiac twin pregnancy and the case was managed accordingly.

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Acardiac twin pregnancies part III: Model simulations

Birth Defects Research Part A Clinical and Molecular Teratology ◽

10.1002/bdra.23559 ◽

2016 ◽

Vol 106 (12) ◽

pp. 1008-1015 ◽

Cited By ~ 4

Author(s):

Martin J.C. van Gemert ◽

Michael G. Ross ◽

Peter G.J. Nikkels ◽

Jeroen P.H.M. van den Wijngaard

Keyword(s):

Model Simulations ◽

Acardiac Twin ◽

Twin Pregnancies

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Modeling Acardiac Twin Pregnancies

Annals of the New York Academy of Sciences ◽

10.1196/annals.1389.023 ◽

2007 ◽

Vol 1101 (1) ◽

pp. 235-249 ◽

Cited By ~ 12

Author(s):

R. DE GROOT ◽

J. P. H. M. VAN DEN WIJNGAARD ◽

A. UMUR ◽

J. F. BEEK ◽

P. G. J. NIKKELS ◽

...

Keyword(s):

Acardiac Twin ◽

Twin Pregnancies

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An incidental rare finding of a TRAP sequence during a caesarean section: A case report

Indian Journal of Obstetrics and Gynecology Research ◽

10.18231/j.ijogr.2021.054 ◽

2021 ◽

Vol 8 (2) ◽

pp. 264-266

Author(s):

Shivangi Sharma ◽

Minal Choudhary

Keyword(s):

Caesarean Section ◽

Upper Body ◽

Arterial Perfusion ◽

Acardiac Twin ◽

Trap Sequence ◽

Arterial Anastomosis ◽

Umbilical Arteries ◽

Twin Pregnancies ◽

Normal Twin ◽

Pump Twin

Twin reversed arterial perfusion (TRAP) sequence is an anomaly of monochorionic twin pregnancies where one twin has an absent, non-functioning or rudimentary heart while the other twin may be normal. The condition occurs because of early development of arterio -arterial anastomoses between the umbilical arteries of twin foetuses that share a fused placenta. In this condition, the affected anomalous (acardiac twin) is perfused by the normal twin (pump twin) via an arterio-arterial anastomosis. The affected twin (acardiac twin) presents with malformations such as absent (acradia) or rudimentary heart, underdeveloped or missing head, upper body and limbs. As pump twin has to provide circulation to itself as well as the perfused twin, this increased burden to perfuse acardiac twin increases the risk of developing cardiac failure in pump twin. Here we present such a case of 22-year-old, which was diagnosed per operatively during caesarean section at department of obstetrics & gynecology, Rukshamaniben General Hospital, Ahmedabad.

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Acardiac twin pregnancies part VI : Why does acardiac twinning occur only in the first trimester?

Birth Defects Research ◽

10.1002/bdr2.1882 ◽

2021 ◽

Author(s):

Martin J. C. Gemert ◽

Michael G. Ross ◽

Jeroen P. H. M. Wijngaard ◽

Peter G. J. Nikkels

Keyword(s):

First Trimester ◽

Acardiac Twin ◽

Twin Pregnancies

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Monochorionic-diamniotic twin pregnancy complicated by twin reversed arterial perfusion sequence and retroplacental hematoma – a case report

Medical Ultrasonography ◽

10.11152/mu-1486 ◽

2018 ◽

Vol 20 (3) ◽

pp. 396

Author(s):

Andrei Mihai Malutan ◽

Marina Dudea ◽

Camelia Albu ◽

Razvan Ciortea ◽

Doru Diculescu ◽

...

Keyword(s):

Twin Pregnancy ◽

Female Fetus ◽

Monochorionic Twin ◽

Arterial Perfusion ◽

Acardiac Twin ◽

Trap Sequence ◽

First Case ◽

Retroplacental Hematoma ◽

Twin Pregnancies ◽

Twin Reversed Arterial Perfusion

Twin reversed arterial perfusion (TRAP) sequence is a rare and severe complication specific to monochorionic twin pregnancies, involving the presence of an acardiac twin and a structurally normal co-twin (pump twin). We report on the case of a33-year-old female with a biamniotic monochorionic twin pregnancy complicated with TRAP sequence and polyhydramnios. The patient underwent fetoscopic termination of the acardiac twin and at 34 gestational weeks (GW) was readmitted with aretroplacental hematoma. The patient gave birth through caesarean section to a living female fetus, weighing 1480 g. To the best of our knowledge, this is the first case reporting a twin pregnancy with TRAP sequence complicated with retroplacental hematoma.

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