Gestational Age-Specific Reference Ranges for the sFlt-1/PlGF Immunoassay Ratio in Twin Pregnancies.

OBJECTIVE: Establish reference ranges for the Elecsys® soluble fms-like tyrosine kinase-1 (sFlt-1)/placental growth factor (PlGF) immunoassay ratio in twin pregnancies. METHODS: Data analyzed were from 3 prospective studies: Prediction of Short-Term Outcome in Pregnant Women with Suspected Preeclampsia (PE) (PROGNOSIS), Study of Early-onset PE in Spain (STEPS), and a multicenter case-control study. Median, 5th, and 95th percentiles for sFlt-1, PlGF, and the sFlt-1/PlGF ratios were determined for normal twin pregnancies for 7 gestational windows and compared with the previous data for singleton pregnancies. RESULTS: The reference range analysis included 269 women with normal twin pregnancies. Before 29 weeks' gestation, median, 5th, and 95th percentiles for sFlt-1/PlGF ratios did not differ between twin and singleton pregnancies. From 29 weeks' gestation to delivery, median, 5th, and 95th percentiles for sFlt-1/PlGF ratios were substantially higher in twin versus singleton pregnancies. sFlt-1 values were higher in women with twin pregnancies across all gestational windows. PlGF values were similar or higher in twin versus singleton pregnancies; PlGF concentrations increased from 10 weeks + 0 days to 28 weeks + 6 days' gestation. CONCLUSIONS: Reference ranges for the sFlt-1/PlGF ratio are similar in women with twin and singleton pregnancies until 29 weeks' gestation but appear higher in twin pregnancies thereafter.

Experience in IVIg therapy for selected women with recurrent reproductive failure and NK cell expansion.

PROBLEM: Recurrent reproductive failure (RRF) has been associated with expansion of circulating NK cells, key cells for maternal tolerance, decidual vasculogenesis and embryo growth. This study reports our experience in intravenous immunoglobulin (IVIg) therapy of a large cohort of women with RRF with expanded circulating NK and/or NKT-like cells (blood NKT cells are a heterogeneous subset of T cells that share properties of both T cells and NK cells). METHOD OF STUDY: Observational study of RRF women with NK or NKT-like expansion (>12% or 10% cutoff levels of total lymphocytes, respectively), treated with IVIg for the next gestation. RESULTS: By multivariant logistic regression analysis after adjusting for age, NK cells subsets and other therapies, IVIg significantly improved the live birth rate to 96.3% in women with recurrent miscarriage (RM) compared with 30.6% in case not receiving IVIg (P < 0.0001). In women with recurrent implantation failure (RIF), in comparison with women not receiving IVIg, treatment increased the pregnancy rate from 26.2 to 93.8% (P ≤ 0.0001) and the live birth rate from 17.9 to 80.0% in RIF (P ≤ 0.0001). CONCLUSIONS: Immunomodulation with IVIg in our selected group of RRF patients with immunologic alterations enhanced clinical pregnancy and live birth rates. Our results may facilitate the design of future clinical trials of IVIg in this pathology.

[Hospital care of patients with A/H1N1 influenza: evaluation of the first 1000 reported cases in Spain]. / Demanda de atención hospitalaria por gripe A/H1N1: evaluación de los primeros 1.000 casos atendidos.

INTRODUCTION AND OBJECTIVES: Influenza A is expected to have a great impact in countries in the northern hemisphere yet little has been reported about how this outbreak can affect hospital care. The aim of this study is to assess patients who demand care for flu symptoms and their outcome. MATERIAL AND METHODS: From the beginning of the outbreak a specific protocol was established for the care of patients with potential influenza A in admission, emergency and hospitalization ward. A nominal registry was designed with clinical and epidemiological data. RESULTS: 1018 patients were evaluated for potential influenza A from the beginning of the outbreak until the 31(st) August, 2009. 77% of them fulfilled clinical criteria and were classified as suspected cases. Mean age was 31,7 years (SD17,2), 52% were women, 3,3% pregnant or puerperal. The admission rate was 23,4% with a global mean stay of 3,5 days, and 2,5 for the adults who were admitted to the short stay hospital unit. 2,8 % had pneumonia, two patients required admission to the intensive care unit and one of them died. CONCLUSIONS: Our data show an outbreak with mild illness, with a remarkable percentage of pneumonia but with good outcome. Despite of the high percentage of admissions, and in order to avoid the misleading attention to other patients, we believe that an assistance model based in specific units, short stay and post-discharge follow up could be suitable.