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Objective To investigate pregnancy outcome for fetuses with nuchal translucency (NT) ≥3.5 mm but normal karyotype in the Stockholm (Sweden) area. Methods A retrospective population-based cohort study. From 2006 to 2012, fetal NT was measured in 55123 singleton pregnancies. There were 341 pregnancies with NT thickness ≥3.5 mm; 139 had a normal karyotype, 164 had an abnormal karyotype and 38 were removed from the study. Pregnancy outcome was defined as adverse (termination of pregnancy [TOP], miscarriage [MC], intrauterine fetal death [IUFD], or delivery of a child with structural defects or genetic disorders), or favourable (delivery of a child without any structural defects or genetic disorders diagnosed before discharge). Results Of the 139 high NT pregnancies with normal karyotype, 110 (79.2%) resulted in live births, one (0.7%) IUFD, 23 (16.5%) TOP and five (3.6%) MC. The risk of an adverse pregnancy outcome increased with increasing NT. Structural fetal defects were found in 28 (19.5%) of pregnancies undergoing second trimester ultrasound screening, of which seven resulted in live births and 21 were terminated. The most common structural defect was cardiac defects. Conclusions Adverse pregnancy outcome increased with increasing NT, even with normal karyotype, however, the prognosis is good if the second trimester ultrasound screening is normal. [ABSTRACT FROM AUTHOR]

Objective. To describe the establishment of the fetoscopic guided laser occlusion (FLOC) technique for treatment of twin-to-twin transfusion syndrome (TTTS) and the initial results in a Swedish national center. Design. Retrospective, descriptive study. Setting. Tertiary level university hospital. Population. All referred and treated cases suffering significant TTTS. Methods. The present study includes all cases of FLOC for TTTS at the Center of Fetal Medicine at Karolinska University Hospital, Stockholm, Sweden from October 2001 until December 2009. Patients were referred from all over Sweden and a few from other Nordic countries. The patients were evaluated with ultrasound examination between gestational ages of 18 and 26 weeks. Data from patients were extracted from our electronic medical record system and, in addition, families were contacted and medical records requested from referring hospitals. Main outcome measures. Pregnancies with one or more surviving infants after FLOC treatment categorized according to stage of TTTS. Results. In 75% of pregnancies, one or more infant was born alive. At stage I, both infants survived in one pregnancy and one survived in the second. There was no significant difference between cases at stage II or III, i.e. 73 vs. 78% of pregnancies resulted in one or more surviving infant. At stage IV, 66% of pregnancies ended with one or more surviving infant. Conclusions. Treatment of TTTS is feasible in a rather small country like Sweden, with comparable results to other centers. There are strong arguments for centralization and further improvement of this kind of highly specialized treatment. [ABSTRACT FROM AUTHOR]

Aim: To determine infant survival and neonatal outcome after fetoscopic laser treatment of twin-to-twin transfusion syndrome (TTTS). Results: In 53/71(75%) laser-treated TTTS cases, at least one twin was liveborn and in 42/71(59%) cases at least one twin survived infancy. Fetal survival did not differ between donors [41/71(58%)] and recipients [46/71(65%), P=0.36]. Among liveborns, infant survival was 29/41(71%) in donors and 36/46(78%) in recipients (P=0.12). Infant survival did not correlate to maternal characteristics (age, BMI, smoking or parity), gestational age at treatment or severity of TTTS (Quintero stage). No TTTS infant born before 25 weeks of gestation survived the first week. Among the 87 infant survivors, 26 (30%) had an Apgar score <7 at 5 min, 47 (54%) developed respiratory distress syndrome, 10 (11%) showed signs of severe brain damage, nine (10%) renal failure, eight (9%) bronchopulmonary dysplasia, and five (6%) infants developed retinopathy of prematurity ≥stage 3. There was no significant difference in neonatal morbidity between recipients and donors. Conclusions: Fetal survival after laser treatment was comparable to that reported by other international centers. There was no significant difference in survival or neonatal morbidity between donors and recipients. Major neonatal morbidity was common, and combined with extremely preterm delivery the prognosis of TTTS is poor. [ABSTRACT FROM AUTHOR]

Introduction: We present a review of all cases of intravascular transfusions in red cell alloimmunization over a time span of 20 years in Stockholm. The aim of the study is to compare our results with published results from larger centers and to identify areas that can be further improved. Material and Methods: A retrospective cohort study was conducted of all women treated with intrauterine transfusions due to erythrocyte immunization in our hospital between June 1990 and June 2010. Primary outcome variables were fetal and neonatal survival, procedure-related complications and gestational age at delivery. Results: A total of 284 intrauterine transfusions were performed in 84 pregnancies, with an overall survival rate of 91.8%. Procedure-related and fatal complications occurred in the present study in 4.9 and 1.4% of fetuses or neonates, respectively. Procedure-related complications were significantly more common in free-loop transfusions than in transfusions in the intrahepatic part of the umbilical vein (OR: 5.4, p = 0.025). There was no significant difference between the intrahepatic and the placental cord insertion route (p = 0.83). Gestational age at first transfusion was significantly associated with an increased risk of a procedure-related complication (OR: 0.8, p = 0.019). Of the live-born infants, 24% of the neonates were born before gestational week 34. Discussion: Our study confirms previous studies demonstrating favorable results with intravascular transfusions. Copyright © 2011 S. Karger AG, Basel [ABSTRACT FROM AUTHOR]