2015
DOI: 10.1016/j.placenta.2014.11.016
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Monochorionic placentas with proximate umbilical cord insertions: Definition, prevalence and angio-architecture

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Cited by 25 publications
(56 citation statements)
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“…63 One of them is the distance between the insertion of the cords in MC twins placenta ranging from 4-25 cm at delivery at term. 64 A measurement <5th centile (3.3-4 cm) is found in 5% of MC twin pregnancies (Figure 7). It occurs more frequently in MCMA (53%) than in MCDA (3%) placenta.…”
Section: Umbilical Proximate Cord Insertionmentioning
confidence: 98%
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“…63 One of them is the distance between the insertion of the cords in MC twins placenta ranging from 4-25 cm at delivery at term. 64 A measurement <5th centile (3.3-4 cm) is found in 5% of MC twin pregnancies (Figure 7). It occurs more frequently in MCMA (53%) than in MCDA (3%) placenta.…”
Section: Umbilical Proximate Cord Insertionmentioning
confidence: 98%
“…The presence of proximate cord insertion (PCI) in MC placenta is associated with a higher prevalence of AA and VV anastomoses. 64 A reduced space between the 2 cord insertions is probably not pathogenic but the increased number of VV anastomoses associated with PCI is a wellestablished factor for adverse fetal outcomes. 37 In severe TTTS, the presence of PCI has been associated with higher rates of laser therapy failures due to technical difficulties in accessing the placental equator and preventing all anastomoses from being coagulated during the procedure.…”
Section: Umbilical Proximate Cord Insertionmentioning
confidence: 99%
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“…The presence of a proximate cord insertion in a monochorionic placenta is associated with a higher prevalence of arterioarterial and venovenous anastomoses, which are protective for twin-twin transfusion syndrome due to bidirectional flow. 9 Accordingly, fetal growth rates were concordant, and no umbilical cord hematocrit differences were detected between the fetuses in this case.…”
mentioning
confidence: 57%
“…That might have been related to the fused proximal cord segment because confluence of the proximal cord may shorten the total length of the cord of each fetus and leave less of a free cord segment for the fetuses to move and entangle. The presence of a proximate cord insertion in a monochorionic placenta is associated with a higher prevalence of arterioarterial and venovenous anastomoses, which are protective for twin‐twin transfusion syndrome due to bidirectional flow . Accordingly, fetal growth rates were concordant, and no umbilical cord hematocrit differences were detected between the fetuses in this case.…”
mentioning
confidence: 72%