Increasing cardiac output and decreasing oxygenation sequence in pump twins of acardiac twin pregnancies

2005 ◽  
Vol 50 (3) ◽  
pp. N33-N42 ◽  
Author(s):  
Martin J C van Gemert ◽  
Asli Umur ◽  
Jeroen P H M van den Wijngaard ◽  
Ed VanBavel ◽  
Frank P H A Vandenbussche ◽  
...  
Keyword(s):  
Cardiac Output ◽  
Acardiac Twin ◽  
Twin Pregnancies

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

2021 ◽  
Author(s):  
Martin J. C. Gemert ◽  
Peter G. J. Nikkels ◽  
Michael G. Ross ◽  
Jeroen P. H. M. Wijngaard
Keyword(s):  
Renal Tissue ◽  
Acardiac Twin ◽  
Twin Pregnancies

Acardiac twin pregnancies part IV: Acardiac onset from unequal embryonic splitting simulated by a fetoplacental resistance model

2017 ◽  
Vol 109 (3) ◽  
pp. 211-223 ◽  
Author(s):  
Martin J.C. van Gemert ◽  
Jeroen P.H.M. van den Wijngaard ◽  
K. Marieke Paarlberg ◽  
Helena M. Gardiner ◽  
Peter G.J. Nikkels
Keyword(s):  
Acardiac Twin ◽  
Resistance Model ◽  
Twin Pregnancies

scholarly journals Is it correct to trust each ultrasonography report blindly? a case report on misdiagnosis, diagnosis and management of acardiac twin pregnancy

2020 ◽  
Vol 9 (6) ◽  
pp. 2628
Author(s):  
Pooja Chandak ◽  
Shobha Toshniwal
Keyword(s):  
Case Report ◽  
Twin Pregnancy ◽  
Rare Complication ◽  
Fetal Medicine ◽  
Monochorionic Twin ◽  
Arterial Perfusion ◽  
Acardiac Twin ◽  
Risk Pregnancy ◽  
Twin Pregnancies ◽  
Multifetal Pregnancy

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.

Acardiac twin pregnancies part III: Model simulations

2016 ◽  
Vol 106 (12) ◽  
pp. 1008-1015 ◽  
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

Modeling Acardiac Twin Pregnancies

2007 ◽  
Vol 1101 (1) ◽  
pp. 235-249 ◽  
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

Comparison of maternal third trimester hemodynamics between singleton pregnancy and twin pregnancy

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Romina-Marina Sima ◽  
Sebastian Findeklee ◽  
Ioana-Anca Bădărău ◽  
Mircea-Octavian Poenaru ◽  
Cristian Scheau ◽  
...  
Keyword(s):  
Heart Rate ◽  
Cardiac Output ◽  
Stroke Volume ◽  
Systemic Vascular Resistance ◽  
Twin Pregnancy ◽  
Third Trimester ◽  
Ejection Time ◽  
Singleton Pregnancy ◽  
Ventricular Ejection Time ◽  
Twin Pregnancies

Abstract Objectives The impedance cardiography (ICG) technique measures the variation of impedance in the thorax due to the physical contractile activity of the heart. Twin pregnancy is characterized by greater maternal hemodynamic changes than a singleton pregnancy. Methods In a study on 121 pregnant women in the last trimester we performed ICG, evaluating the following hemodynamic parameters: stroke volume, heart rate, cardiac output, ventricular ejection time, left ventricular ejection time, thoracic impedance, and systemic vascular resistance. Results The study included singleton and twin pregnancies. Heart rate values in women with single fetus was lower than in those carrying twins (85 vs. 100 beats/min, p=0.021) as were the stroke volume values (64 vs. 83 mL, p=0.010) and the cardiac output (p<0.0001). Systemic vascular resistance decreased in twin pregnancies compared to singleton pregnancy (p=0.023). Conclusions ICG studies are rare, and the validation of their results is an ongoing process. However, the ICG technique is applicable in the third trimester of pregnancy and can yield important information regarding the hemodynamic profile of singleton and twin pregnancies, revealing maternal heart changes specific to twin pregnancies.

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

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.

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

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

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

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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