First‐Trimester Sonographic Prediction of Obstetric and Neonatal Outcomes in Monochorionic Diamniotic Twin Pregnancies

Abstract

In our population, nuchal translucency, crown-rump length, and combined discordances in monochorionic diamniotic twin pregnancies were not predictive of adverse composite obstetric and neonatal outcomes.

Prediction of preterm birth in twin gestations using biophysical and biochemical tests

“…66 Only two studies have assessed nuchal translucency in predicting preterm birth in twin gestations. 67,68 One small study including 20 monochorionic multiple gestations (18 twins and 2 triplets) uncomplicated by twin-to-twin transfusion syndrome or aneuploidies reported that 3 of the 4 gestations with increased nuchal translucency thickness in at least one fetus and 1 of the 16 with normal nuchal translucency thickness were delivered at <32 weeks of gestation (sensitivity of 75%, specificity of 94%, and positive and negative likelihood ratios of 12.0 and 0.3, respectively). 67 A recent retrospective cohort study involving 177 monochorionic diamniotic twin gestations found that intertwin discordance in nuchal translucency (≥20%) was a poor predictor for preterm birth at <28 weeks of gestation (area under the ROC curve, 0.52; 95% CI, 0.42e0.61).…”

“…67 A recent retrospective cohort study involving 177 monochorionic diamniotic twin gestations found that intertwin discordance in nuchal translucency (≥20%) was a poor predictor for preterm birth at <28 weeks of gestation (area under the ROC curve, 0.52; 95% CI, 0.42e0.61). 68 These data have inherent limitations to allow firm conclusions other than suggesting that more studies are needed to determine the performance of first-trimester nuchal translucency as a predictive test for preterm birth in twin gestations.…”

Comparison between laparoscopically assisted and standard fetoscopic laser ablation in patients with anterior and posterior placentation in twin‐twin transfusion syndrome: a single center study

“…A distribution plot of the laser time showed no evidence of a skewed pattern. The number of anastomoses ablated was not significantly different between the three groups [7 (5-12) in SAP vs 6 (5-11) in LAP and 8 (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16) in SPP, p = 0.47]. There were no significant differences seen between the three groups in terms of the amount of fluid either removed or infused during the case.…”

“…1 An anterior placenta is found in approximately 45% of patients with a monochorionic twin pregnancy who present with TTTS in the second trimester. [2][3][4] Ultrasound-directed percutaneous fetoscopic laser photocoagulation of placental anastomoses has become the standard treatment for TTTS diagnosed before 26 weeks of gestation.…”

The association of crown‐rump length discrepancy with birthweight discordance in spontaneous versus IVF monochorionic twins: a multicenter study

“…The data in the literature concerning correlation between intertwin crown‐rump length (CRL) discrepancy and birthweight discordance are limited and contradicting. Many previous studies included both MC and DC twins and did not present that data independently, which make their conclusions problematic, because MC twins have their own specific complications, most of them associated with discordant growth, and their prenatal surveillance is completely different …”