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Objective: To study whether knowledge of cervical length (CL) is useful in reducing the length of hospital stay in women admitted because of threatened preterm labor. Methods: We performed a single-center, parallel, randomized trial at the Hospital Clínic of Barcelona. Inclusion criteria were single pregnancy, gestational age (GA) between 24+0 and 35+6 weeks, Bishop score 25 mm, early discharge within 12-24 h from randomization was recommended. Length of hospital stay was the main outcome. Results: After randomization, 149 patients had complete follow-up (control group, n = 74; study group, n = 75). The mean (SD) length of stay was significantly shorter - 3.0 (2.2) vs. 4.0 (2.0) days (p = 0.004) - in the study group, with a higher proportion of women remaining hospitalized ≤3 days (relative risk [95% confidence interval] 0.43 [0.26-0.70]), with no differences in GA at delivery or preterm birth rate. Conclusions: Knowledge of CL in women admitted because of threatened preterm labor is useful in reducing length of stay, with no impact on GA at delivery or preterm birth rate.

The immigration of Latin American women of childbearing age has spread the congenital transmission of Chagas disease to areas of nonendemicity, and the disease is now a worldwide problem. Some European health authorities have implemented screening programs to prevent vertical transmission, but the lack of a uniform protocol calls for the urgent establishment of a new strategy common to all laboratories. Our aims were to (i) analyze the trend of passive IgG antibodies in the newborn by means of five serological tests for the diagnosis and follow-up of congenital Trypanosoma cruzi infection, (ii) assess the utility of these techniques for diagnosing a congenital transmission, and (iii) propose a strategy for a prompt, efficient, and cost-effective diagnosis of T. cruzi infection. In noninfected newborns, a continuous decreasing trend of passive IgG antibodies was observed, but none of the serological assays seroreverted in any the infants before 12 months. From 12 months onwards, serological tests achieved negative results in all the samples analyzed, with the exception of the highly sensitive chemiluminescent microparticle immunoassay (CMIA). In contrast, in congenitally infected infants, the antibody decline was detected only after treatment initiation. In order to improve the diagnosis of congenital T. cruzi infection, we propose a new strategy involving fewer tests that allows significant cost savings. The protocol could start 1 month after birth with a parasitological test and/or a PCR. If negative, a serological test would be carried out at 9 months, which if positive, would be followed by another at around 12 months for confirmation.

Background This study was performed to assess the role of lipopolysaccharide modulators as a marker of microbial translocation among human immunodeficiency virus (HIV)-infected women during pregnancy and to evaluate their association with preterm delivery. Methods The study had a prospective cohort design and was performed at the Hospital Clinic in Barcelona, Spain. Thirty-six pregnant women with and 36 without HIV infection, matched on the basis of age and parity, were included. Maternal blood samples were obtained during the first trimester, during the third trimester, and at delivery. Levels of soluble CD14 (sCD14), human lipopolysaccharide-binding protein (LBP), immunoglobulin M endotoxin core antibodies to lipopolysaccharide (EndoCAb), and interleukin 6 (IL-6) were determined. Fetal cord blood levels of sCD14, LBP, and IL-6 were determined. Results were compared between groups. Results First trimester sCD14 and LBP levels and third trimester sCD14 levels were significantly higher in the HIV-infected group. HIV-infected women with preterm births and spontaneous preterm births had significantly increased levels of sCD14 throughout pregnancy and significantly increased levels of LBP during the first trimester, compared with HIV-infected women with delivery at term or with HIV-negative women. On multivariate analysis, an independent association was observed between first trimester sCD14 levels and preterm delivery among HIV-infected women. Conclusions This is the first study to assess inflammatory markers related to microbial translocation during pregnancy among HIV-infected women. Higher levels of sCD14 and LBP were observed in HIV-infected pregnant women and were associated with preterm delivery.

OBJECTIVE To determine whether mitochondrial, oxidative, and apoptotic abnormalities in placenta derived from HIV and combined antiretroviral therapy (cART) containing zidovudine (AZT) could be associated with adverse perinatal outcome. DESIGN Cross-sectional, controlled, observational study. METHODS We studied obstetric results and mitochondrial, oxidative, and apoptotic state in placenta of 24 treated HIV-infected and 32 -uninfected pregnant women. We measured mitochondrial DNA (mtDNA) content by quantitative reverse transcriptase-polymerase chain reaction (mtND2/n18SrRNA), oxidative stress by the spectrophotometric quantification of lipid peroxidation and apoptosis by Western blot analysis of active caspase-3 respect to β-actin content and analysis of the terminal deoxynucleotidyl transferase dUTP nick end labeling. RESULTS Global adverse perinatal outcome (defined as preterm delivery or/and small newborns for gestational age) was significantly increased in HIV pregnancies [or 6.7 (1.3-33.2); P < 0.05]. mtDNA content in HIV-infected women was significantly depleted (39.20% ± 2.78%) with respect to controls (0.59 ± 0.03 vs. 0.97 ± 0.07; P < 0.001). A significant 29.50% ± 9.14% increase in oxidative stress was found in placentas of HIV-infected women (23.23 ± 1.64 vs. 17.94 ± 1.03; P < 0.01). A trend toward 41.18% ± 29.41% increased apoptosis active caspase-3/β-actin was found in HIV patients (0.48 ± 0.10 vs. 0.34 ± 0.05; P = not significant), confirmed by transferase dUTP nick end labeling assay. Adverse perinatal outcome did not correlate mitochondrial, oxidative, or apoptotic findings. CONCLUSIONS Placentas of HIV-infected pregnant women under AZT cART showed evidence of mtDNA depletion, increased oxidative stress levels, and apoptosis suggestive of secondary mitochondrial failure, potential base of associated adverse perinatal outcome. Despite the fact that further demonstration of causality would need new approaches and bigger sample sizes, AZT-sparing cART should be considered in the context of pregnancy.

The menstrual cycle is a finely tuned biological process comprising a precisely orchestrated sequence of events: follicular growth, selection and ovulation, extensive endometrial changes, corpus luteum (CL) growth and maturation, and luteolysis. Differences in the length of the menstrual cycle (MCL) have been associated with variable female fecundity. However, the reason for these differences is so far unknown. The donor-recipient model, separating uterine from ovarian factors, allows clarifying the origin of MCL-associated fecundity variations.We analyzed retrospectively 2015 oocyte donation cycles, resulting in 3427 embryo transfers (ET) and pregnancy follow-up.Surprisingly, we found that oocyte donors MCL of 34-35 days were strongly associated with significantly higher biochemical, clinical and ongoing pregnancy rates in woman who received the embryos, compared to the reference group of MCL of 27-29 days. Moreover, donors with longer MCL presented higher ovarian response to stimulation and lower amount of hormonal stimulation needed to achieve multifollicular growth. Conversely, MCL of25 days were associated with a poorer ovarian response to stimulation, less cumulus oocyte complexes (COCs) and less mature oocytes (MII) retrieved; however, the quality of oocytes in these women is not associated to their ovarian response, as evidenced by the pregnancy rates obtained when transferred into an adequately prepared endometrium.We conclude that oocyte quality, rather than natural endometrial preparation, is the main reason for the reported higher fecundity of women with longer MCL. This result is further confirmed by our data on bleeding length in the donor pool. Response to ovarian stimulation is the definitive test of ovarian reserve; moreover, since different MCLs result from varying length of the follicular phase, longer MCL should be associated with a higher number of follicular recruitment events. We hypothesize that MCL is associated with - and a marker of - ovarian reserve in healthy reproductive age women.

Objectives Three-dimensional (3D) sonographically based automated volume calculation (SonoAVC; GE Healthcare, Zipf, Austria) is being introduced in folliculometry during ovarian stimulation; however, clear training assessments in this technique are lacking. The learning curve–cumulative summation (LC-CUSUM) test provides a quantitative tool to determine when a trainee has learned a procedure. The aim of this prospective study was to assess 3D SonoAVC LC-CUSUM curves in folliculometry. Methods Analyses were performed on 98 oocyte donors by capturing the ovarian image in 3D and applying the 3D SonoAVC software during ovarian stimulation cycles. Each patient was scanned by an expert operator and by a trainee. Independent LC-CUSUM tests for 4 follicular diameters tracked the competency of 3 trainees in 3D SonoAVC. Results We found that the numbers of sonographic examinations required by the 3 trainees to identify the correct number of follicles of 10 mm or larger were 38, 32, and 28, respectively; for follicles of 14 mm or larger, they were 29, 28, and 28; for follicles of 18 mm or larger, they were 24, 19, and 27; and for follicles of 21 mm or larger, they were 29, 19, and 24. Conclusions A variable number of procedures are needed to reach proficiency in 3D SonoAVC, even for trained 2-dimensional sonographers. Assessment of learning curves should be implemented when incorporating 3D SonoAVC in reproduction units.

To assess the impact of HIV‐infection and highly active anti‐retroviral treatment in mitochondria and apoptotic activation of caspases during pregnancy and their association with adverse perinatal outcome. Changes of mitochondrial parameters and apoptotic caspase activation in maternal peripheral blood mononuclear cells were compared at first trimester of pregnancy and delivery in 27 HIV‐infected and ‐treated pregnant women versus 24 uninfected pregnant controls. We correlated immunovirological, therapeutic and perinatal outcome with experimental findings: mitochondrial DNA (mtDNA) content, mitochondrial protein synthesis, mitochondrial function and apoptotic caspase activation. The HIV pregnancies showed increased adverse perinatal outcome (OR: 4.81 [1.14–20.16]; P < 0.05) and decreased mtDNA content (42.66 ± 5.94%, P < 0.01) compared to controls, even higher in naïve participants. This depletion caused a correlated decrease in mitochondrial protein synthesis (12.82 ± 5.73%, P < 0.01) and function (20.50 ± 10.14%, P < 0.001), not observed in controls. Along pregnancy, apoptotic caspase‐3 activation increased 63.64 ± 45.45% in controls (P < 0.001) and 100.00 ± 47.37% in HIV‐pregnancies (P < 0.001), in correlation with longer exposure to nucleoside analogues. HIV‐infected women showed increased obstetric problems and declined genetic and functional mitochondrial parameters during pregnancy, especially those firstly exposed to anti‐retrovirals. The apoptotic activation of caspases along pregnancy is emphasized in HIV pregnancies promoted by nucleoside analogues. However, we could not demonstrate direct mitochondrial or apoptotic implication in adverse obstetric outcome probably because of the reduced sample size.

The human immunodeficiency virus (HIV) is an RNA virus discovered at the beginning of the 1980s (Gallo and Montagnier, Science 298:1730–1, 2002) with a replicative cycle that can be divided into two phases: in the first phase the virus enters the cells (Freed and Martin, J Biol Chem 270:23883–6, 1995), copies its RNA into a double-stranded DNA, and integrates this newly copied genome into the host cell. The second phase consists of the synthesis and processing of the viral genome, its mRNAs and proteins. Finally, the assembly and exit of the virus from the host cells occurs ([Manual del SIDA. Vol. 6a Edicion], 2005).

Objective: Highly active antiretroviral therapy (HAART) has decreased the risk of HIV mother-to-child transmission. However, HIV and HAART have been associated with adverse perinatal outcome. HAART has been associated with mitochondrial dysfunctioninnonpregnantadults,andHIV,additionally,toapoptosis.Wedeterminedwhether mitochondrial toxicity and apoptosis are present in HIV-pregnant women and their newborns and could be the basis of adverse pregnancy outcome. Design: Single-site, cross-sectional, controlled observational study without intervention. Methods: We studied mitochondrial and apoptotic parameters in mononuclear cells frommaternalperipheralbloodandinfantcordbloodatdeliveryin27HIV-infectedand treated pregnant women, and 35 uninfected controls and their infants, to correlate clinical outcome with experimental findings: mitochondrial number (CS), mtDNA content (ND2/18SrRNA), mitochondrial protein synthesis (COX-II/V-DAC), mitochondrial function (enzymatic activities) and apoptotic rate (caspase-3/b-actin). Results: Global adverse perinatal outcome, preterm births and small newborn for gestational age were significantly increased in HIV pregnancies [odds ratio (OR) 7.33, 5.77 and 9.71]. Mitochondrial number was unaltered. The remaining mitochondrial parameters were reduced in HIV mothers and their newborn; especially newborn mtDNA levels, maternal and fetal mitochondrial protein synthesis and maternal glycerol-3-phosphate þcomplex III function (38.6, 25.8, 13.6 and 31.2% reduced, respectively, P

Antiretroviral therapy during pregnancy is critical to preventing human immunodeficiency virus vertical transmission. Physiological changes during pregnancy can alter drug kinetics. The aim of this study was to assess the pharmacokinetics (PK) of saquinavir (SQV) boosted with ritonavir during pregnancy and postpartum. Fourteen human immunodeficiency virus-positive pregnant women started SQV 500 mg new tablet formulation plus ritonavir at a dose of 1000/100 mg twice a day + 2 nucleoside retrotranscriptase inhibitors during pregnancy. At weeks 24 and 34 of pregnancy and 6 weeks postpartum, a 12-hour PK study was conducted. PK parameters were calculated using Win Nolin software version 4.1. At week 24, the geometric mean values for SQV area under the plasma concentration-time curve from 0-12 hours (AUC₀₋₁₂), the maximum observed plasma concentration (C(max)), trough plasma concentration (C(min)), and the elimination half-life (t(1/2)) were 24.80 mg·h⁻¹·mL⁻¹, 4.66 mg/mL, 0.93 mg/mL, and 4.31 hours, respectively. At week 34, AUC₀₋₁₂, C(max), C(min), and t(1/2) were 12.71 mg·h⁻¹·mL⁻¹, 3.23 mg/mL, 0.26 mg/mL, and 4.06 hours, respectively. Finally, at 6 weeks postpartum, mean values for SQV AUC₀₋₁₂, C(max), C(min), and t(1/2) were 28.94 mg·h⁻¹·mL⁻¹, 3.92 mg/mL, 0.86 mg/mL, and 3.60 hours, respectively. Although PK parameters in week 24 and postpartum were very similar, those for week 34 showed an important reduction: -71.20%, -30.61%, -48.73%, and -5.81% in C(min), C(max), AUC₀₋₁₂, and t(1/2), respectively, compared with week 24, but no statistically significant differences were shown between patients. No vertical transmissions were reported. Therapeutic drug monitoring of SQV during pregnancy should be considered, mainly during the third trimester, to ensure adequate drug exposure throughout the entire pregnancy.

The risk of transmission of human immunodeficiency virus (HIV), hepatitis B (HBV) and hepatitis C virus (HCV) during invasive procedures may not be negligible, although it has been poorly assessed. The risk of hepatitis B transmission during amniocentesis seems to be low, but it may be increased in women with a positive HBeAg. HCV transmission risk cannot be established because evidence is lacking. No information exists about other invasive procedures in such infections. An increased risk of vertical transmission following an invasive procedure was suggested in HIV infection, but amniocentesis seems to be safe when performed under highly active antiretroviral treatment, with a low viral load and when avoiding placental passage. International guidelines do not clearly define policies to screen for maternal blood-borne virus infection during invasive procedures. Nevertheless, serological status should be assessed in all cases and parents should be aware of the existing evidence for transmission risk. Transplacental amniocentesis should always be avoided.

Congenital cytomegalovirus (CMV) infection occurs in 0.6–0.7% of all newborns and is the most prevalent infection-related cause of congenital neurological handicap. Vertical transmission occurs in around 30% of cases, but the fetus is not always affected. Symptomatic newborns at birth have a much higher risk of suffering severe neurological sequelae. Detection of specific IgG and IgM and IgG avidity seem to be the most reliable tests to identify a primary infection but interpretation in a clinical context may be difficult. If a seroconversion is documented or a fetal infection is suspected by ultrasound markers, an amniocentesis should be performed to confirm a vertical transmission. In the absence of a confirmed fetal infection with fetal structural anomalies, a pregnancy termination should be discouraged. Fetal prognosis is mainly correlated to the presence of brain damage. Despite promising results with the use of antiviral drugs and CMV hyperimmune globulin (HIG), results have to be interpreted with caution. Pregnant women should not be systematically tested for CMV during pregnancy. Managing CMV screening should be restricted to pregnancies where a primary infection is suspected or among women at high risk. The magnitude of congenital CMV disease and the value of interventions to prevent its transmission or to decrease the sequelae need to be established before implementing public health interventions. In this paper, aspects of CMV infection in the pregnant woman and her infant are reviewed.

In this retrospective, matched study we evaluated the outcome of 31 oocyte donation (OD) cycles performed in 29 Turner syndrome (TS) patients involving the elective transfer of a single, fresh cleavage-stage (day 2 to 3) embryo. Due to the fact that ongoing pregnancy rate was statistically significantly lower (3.2% versus 22.5%) in TS patients when compared with matched, non-TS recipients, other strategies (such as single blastocyst transfer) should be evaluated that could enable better outcomes and at the same time avoid potential complications related to multiple pregnancies in this particularly high obstetric-risk group.

Aim: To construct a predictive model for respiratory distress syndrome (RDS) from gestational age (GA) at delivery and TDx-FLM II value. Methods: Pregnant women who underwent an amniocentesis in which TDx-FLM II was determined were included in the study. A model for the occurrence of RDS was constructed by means of a logistic regression procedure from TDx-FLM II values and GA at delivery. Results: The mean value of TDx-FLM II was 47.11 mg/g. The mean GA at delivery was 33.4 weeks. The incidence of RDS was 7.8% (18/231). The optimal cutoff of predicted risk for respiratory distress was found to be 8.8%, resulting in a sensitivity and specificity of 89 and 83%, respectively. Conclusions: The adjustment of the TDx-FLM II value for GA at delivery results in a significant improvement in the predictive capacity of the test for the occurrence of RDS. The use of GA-specific cutoff values may simplify clinical decisions.

OBJECTIVE: To assess the impact of HIV infection on the reliability of the first-trimester screening for Down syndrome, using free beta-human chorionic gonadotrophin, pregnancy-associated plasma protein-A and fetal nuchal translucency, and of the second-trimester screening for neural tube defects, using alpha-fetoprotein. PATIENTS AND METHODS: Multicentre study comparing the multiples of the median of markers for Down syndrome and neural tube defect screening among 214 HIV-infected pregnant women and 856 HIV-negative controls undergoing a first-trimester Down syndrome screening test, and 209 HIV-positive women and 836 HIV-negative controls with a risk evaluation for neural tube defect. The influence of treatment, chronic hepatitis and HIV disease characteristics were also evaluated. RESULTS: Multiples of the median medians for pregnancy-associated plasma protein-A and beta-human chorionic gonadotrophin were lower in HIV-positive women than controls (0.88 vs. 1.05 and 0.84 vs. 1.09, respectively; P < 0.005), but these differences had no impact on risk estimation; no differences were observed for the other markers. No association was found between HIV disease characteristics, antiretroviral treatment use at the time of screening or chronic hepatitis and marker levels. CONCLUSION: Screening for Down syndrome during the first trimester and for neural tube defect during the second trimester is accurate for HIV-infected women and should be offered, similar to HIV-negative women.

Objective To analyze prognostic factors that are associated with a discordant outcome in egg recipients sharing oocytes from the same donor. Design Matched case-control single-center study. Setting Private infertility clinic. Patient(s) Four hundred forty-four recipients (222 pairs) sharing oocytes from the same donor and showing a discordant outcome. Intervention(s) Controlled ovarian hyperstimulation of egg donors, oocyte donation, intracytoplasmic sperm injection, and ET in egg recipients. Main Outcome Measure(s) Recipient age, obstetric (gravidity, parity) and gynecologic variables (previous uterine surgery, uterine fibroids, uterine malformations, endometriosis, history of tubal infertility), previous oocyte donation cycles, duration of E 2 replacement, received cumulus-oocyte complexes, mature (MII) oocytes, fertilized oocytes, transferred embryos, mean embryo score, transfer difficulty, and semen parameters. Result(s) No significant differences were found in the above-mentioned prognostic factors between the study and control groups. Conclusion(s) Recipient- and cycle-related prognostic factors investigated in our study were not associated with a discordant outcome in recipient pairs sharing oocytes from the same donor. Other possible prognostic factors involving oocyte donor heterogeneity, embryo aneuploidy rates, male factor infertility, and endometrial receptivity should be further investigated.

Background. Altered T cell subset distribution patterns in uninfected individual highly exposed to human immunodeficiency virus (HIV) have been explained either as a consequence of viral exposure or as a surrogate marker of low susceptibility to infection. Methods. Multiple genetic and immunological parameters were studied prospectively in 21 HIV-serodiscordant heterosexual couples. Results. We found changes of both CD4 + and CD8 + T cells in highly HIV-exposed, uninfected individuals, with a lower level of naive and CD28 + T cells and higher levels of HLA-DR + T cells and CD4 + T cells expressing CCR5 and memory CD4 + T cells than in control subjects. The changes in memory and activated T cells observed in highly HIV-exposed, uninfected partners were directly correlated with plasma viral load (PVL) of the HIV-1-infected partners, whereas changes in naive and CD4 + CD28 + T cells observed in highly HIV-exposed uninfected partners were inversely correlated with PVL of the HIV-1-infected partners. We were only able to detect HIV-1-specific T-cell responses in a few highly HIV-exposed uninfected partners. Conclusions. These data suggest that the peripheral immune cells of highly exposed, uninfected individuals responded according to the level of HIV exposure from the partner, even though evidence of specific HIV stimulation is rarely seen.

INTRODUCTION: Information is scarce regarding the outcome of oocyte donation (OD) in patients with a history of cancer treatment. Therefore, we conducted a matched controlled analysis on the outcome of OD in these recipients. METHODS: Between January 2000 and November 2005, 33 patients with a history of chemotherapy and/or radiotherapy had an OD cycle. Matching was performed to the chronologically closest patient without a history of cancer therapy by number of days of hormonal stimulation before embryo replacement, number of replaced embryos, day of embryo transfer and origin of sperm. RESULTS: The primary diseases of the patients were Hodgkin’s lymphoma (n 5 12), non-Hodgkin’s lymphoma (n 5 3), leukaemia (n 5 7), ovarian cancer (n 5 6), Ewing’s sarcoma (n 5 2), breast cancer (n 5 1), sympathoblastoma (n 5 1) and histiocytosis X (n 5 1). Twentythree patients had undergone chemotherapy and radiotherapy, nine patients chemotherapy only and one radiotherapy only. The mean age of the recipients was 33.1 years [95% confidence interval (CI) 30.9–35.3] and 39.6 (95% CI 37.1–42.1) in the study and control groups, respectively. The average number of received oocytes and transferred embryos, was similar in both groups. Nineteen (57.6%) versus 13 (39.4%) pregnancies resulting in an ongoing pregnancy (i.e. viable at 12 weeks) in 15 (45.4%) versus 9 cycles (27.3%) (NS) were obtained in study and control groups, respectively. Implantation rate in study and control groups was 35.8 versus 17.9%, respectively (P 5 0.02). CONCLUSIONS: The results suggest that patients with a history of cancer treatment have a pregnancy rate after OD similar to that in the general population of oocyte recipients.

Aim: The need for a non-invasive diagnosis of the effects of ethanol in utero on the development of the intestine in humans led us to look for a serum marker of the structural integrity of the intestine. We propose apolipoprotein A-IV (apoA-IV) as a possible candidate. In humans this protein is synthesized only by intestinal mucosa, it is expressed in the enterocyte of the foetus from 20 weeks of gestation, and it is released to the blood stream after synthesis. Methods: We measured the levels of apoA-IV in the umbilical cord serum of neonates whose mothers had consumed alcohol during pregnancy and neonates born to women who had not (controls).The gestational age at delivery of the cases studied ranged from 36 to 42 weeks. ELISA and Western blot analysis were used. Results: There was no difference in the mean body weight of neonates from either group. Nevertheless, exposure to ethanol in utero significantly reduced (by about 30%) the apoA-IV levels in serum at birth, regardless of body weight. Conclusion: Our findings suggest that circulating apoA-IV levels could be used as a clinical marker of the prenatal effects of ethanol on the structural integrity of the intestine. Neonatal diagnosis of these intestinal effects could improve post-natal outcome.

Objective: Fetal growth restriction is associated with adverse perinatal outcome but is often not recognised antenatally, and low birthweight centiles based on population norms are used as a proxy instead. This study compared the association between neonatal morbidity and fetal growth status at birth as determined by customised birthweight centiles and currently used centiles based on population standards. Design: Retrospective cohort study. Setting: Referral hospital, Barcelona, Spain. Patients: A cohort of 13 661 non-malformed singleton deliveries. Interventions: Both population-based and customised standards for birth weight were applied to the study cohort. Customised weight centiles were calculated by adjusting for maternal height, booking weight, parity, ethnic origin, gestational age at delivery and fetal sex. Main outcome measures: Newborn morbidity and perinatal death. Results: The association between smallness for gestational age (SGA) and perinatal morbidity was stronger when birthweight limits were customised, and resulted in an additional 4.1% (n = 565) neonates being classified as SGA. Compared with non-SGA neonates, this newly identified group had an increased risk of perinatal mortality (OR 3.2; 95% CI 1.6 to 6.2), neurological morbidity (OR 3.2; 95% CI 1.7 to 6.1) and non-neurological morbidity (OR 8; 95% CI 4.8 to 13.6). Conclusion: Customised standards improve the prediction of adverse neonatal outcome. The association between SGA and adverse outcome is independent of the gestational age at delivery.

The objective of the study was to assess the fertility of non-infertile couples seeking pregnancy in whom the woman was HIV infected. Therefore, a cross-sectional study was conducted between January 1998 and March 2005. A standardized fertility assessment was performed in all the included couples. A total of 130 women and 121 men were evaluated. Their median age was 34 years (range 22-43). Only 7.2% of the women were severely immunocompromised. The majority of women had regular cycles. Only one woman had an active sexually transmitted disease at the time of evaluation. A tubal occlusion on hysterosalpingogram was present in 27.8% of the women with no proven fertility. In 50.5% of the women, hepatitis C virus co-infection was present. One-third of the male partners (38/121) was infected with HIV. Abnormal semen parameters were observed in 83.4% of HIV-infected and 41.7% of HIV-uninfected partners (OR = 7; 95% CI = 2.1-23). It is concluded that the great majority of the HIV-infected women seeking pregnancy had a good infection status. Because in many of the couples, the women presented unexplained tubal occlusions and the men presented semen alterations, a hysterosalpingography and semen analysis should be part of the preconceptional investigations.

Objective To assess the amniopatch procedure when premature rupture of membranes occurs after first-trimester chorionic villus sampling (CVS). Study Design From May 2001 to June 2004, the amniopatch procedure was offered in cases of premature rupture of membranes after CVS when severe oligohydramnios was present (largest vertical pocket < 2 cm) and persistent (more than 1 week). Results The amniopatch was placed in five pregnancies at 12–18 weeks of gestation, resulting in amniotic fluid restoration in all but one pregnancy. In three pregnancies, fetal demise was observed at 1, 2 and 36 days after the procedure. The last procedure resulted in a healthy newborn. Conclusion Although the amniopatch restored normal amniotic fluid levels in all cases, 4 of the 5 cases resulted in fetal demise. Copyright © 2007 John Wiley & Sons, Ltd.

Objectives To compare the efficacy of nifedipine and ritodrine in prolonging pregnancy beyond 48 h, 1 week and 36.0 weeks and to evaluate maternal side effects and adverse perinatal outcome. Study design Non-blinded, randomized controlled trial. Eighty patients with singleton pregnancies admitted for preterm labor with intact membranes between 22 and 35 weeks of gestation were included in the study. Preterm labor was defined as the persistence of at least two symptomatic uterine contractions within a 10 min period during 60 min after admission and despite bed rest. Results Forty women received oral nifedipine and forty intravenous ritodrine. Two patients, one from each group, were excluded because of loss to follow-up after discharge. Therefore, 39 women in the nifedipine and the ritodrine groups, respectively, were evaluable for the final analysis. Baseline characteristics were comparable in both groups. The percentage of initial response, the speed of onset of action and the rate of successful treatment within 48 h were significantly better in the ritodrine group. However, prolongation of pregnancy beyond 7 days and 36 weeks of pregnancy was similar with a significantly lower rate of side effects in the nifedipine group. Conclusions In this small trial, ritodrine provided more effective tocolysis within the first 48 h than nifedipine at the doses used in this study, although with a significantly higher rate of side effects.

Objectives: To carry out an epidemiological analysis of the emerging epidemic in an Eastern European country and to compare the approach to prevention of mother-to-child transmission (MTCT) with that in Western Europe. Design: Prospective cohort study established in 1985 in Western Europe and extended to Ukraine in 2000. Methods: Data on 5967 HIV-infected pregnant women and their infants (1251 from Ukraine and 4716 from Western/Central Europe) was analysed. Factors associated with transmission were identified with logistic regression. Results: HIV-infection among pregnant women enrolled in Western European centres has shifted from being largely injecting drug use (IDU)-related to heterosexually-acquired; in Ukraine IDU also gradually declined with women increasingly identified without specific risk factors. In Ukraine in 2000-2004 most (80%) women received single dose nevirapine (sdNVP) and/or short-course zidovudine prophylaxis [MTCT rate 4.2%; 95% confidence interval (CI), 1.8-8.0 for sdNVP with short-course zidovudinel; 2% (n = 27) received antenatal HAART and 33% (n = 418) delivered by elective caesarean section (CS); in Western European centres 72% of women received HAART (MTCT rate 1.0%; 95% Cl, 0.4-1.9) and 66% delivered by elective CS during the same period. Conclusions: Our findings indicate distinct differences in the epidemics in pregnant women across Europe. The evolution of the MTCT epidemic in Ukraine does not appear to be following the same pattern as that in Western Europe in the 1980s and 1990s. Although uptake of preventive MTCT prophylaxis has been rapid in both Western Europe and Ukraine, substantial challenges remain in the more resource-constrained setting in Eastern Europe. (c) 2006 Lippincott Williams & Wilkins

Objective This study was undertaken to describe a new prenatal diagnosis program among human immunodeficiency virus (HIV)-infected women, and the perinatal outcome of this program's application over a more than 2-year period. Study design From June 2000 to December 2003, all HIV-infected women who were booked into the antenatal clinic before 20 weeks were offered a screening for chromosomal anomalies, with midtrimester amniocentesis in the tests that were positive. Results A total of 116 pregnancies (including 3 sets of twins) were seen: 96 women were offered and accepted screening for chromosomal anomalies. Thirteen pregnancies had a positive screening test and amniocentesis was performed in 10 at median 16.5 gestational weeks: a trisomy 21 and a monosomy X were diagnosed. No vertical transmissions were documented by age 6 months in the 6 liveborn infants who underwent amniocentesis. Conclusion A program of prenatal diagnosis for chromosomal anomalies appears to be effective when applied to HIV-infected women, although safety remains to be proven.

Resumen Objetivo Evaluar la eficacia y seguridad del intento de version externa a termino. Material y metodos Entre enero de 2001 y marzo de 2004 se han recogido los resultados perinatales de las gestantes remitidas a la unidad de bienestar fetal para version externa, procedentes del dispensario de obstetricia. Los criterios de inclusion para el intento de version externa fueron: a) presentacion no cefalica; b) edad gestacional entre las 36 y 38 semanas; c) indice de liquido amniotico ≥ 8 cm; d) indice cerebroplacentario superior al percentil 5; e) patron cardiotocografico reactivo, y f) ausencia de contraindicaciones para el parto vaginal. Como grupo control se ha incluido a las gestantes remitidas para intento de version que en el momento de la inclusion tenian una presentacion cefalica. Resultados Se remitio a 246 gestantes, de las que un 72% (178/246) cumplia los criterios de inclusion y eran elegibles, de las cuales 5 no aceptaron el procedimiento, finalmente se incluyeron 173 casos. De los casos incluidos, un 56% (97/173) fueron versionadas a cefalica con exito, mientras que en un 44% (76/173) no se consiguio la version. La tasa de cesarea en las 173 gestantes incluidas fue del 42% (73/173): un 8,2% (8/97) en las versionadas y un 85,5% (65/76) en las que no se consiguio versionar. En el grupo control la tasa de cesarea fue del 11,5% (6/52). No se observaron diferencias significativas en la puntuacion de Apgar al minuto (8,5 frente a 8,7), a los 5 min (9,8 frente a 9,9) ni en el pH arterial al nacimiento (7,24 frente a 7,21) entre las gestantes aceptadas para intento de version y el grupo control de versiones espontaneas. Conclusiones El intento de version externa a termino parece ser una tecnica eficaz y segura.

Resumen Objetivo Describir los resultados perinatales de las gestaciones con rotura prematura de membranes (RPM) antes de la semana 24 de gestacion. Pacientes y metodos Se incluyo a 50 pacientes consecutivas con RPM antes de las 24 semanas de gestacion. Despues de 1 semana de ingreso, se ofrecio la realizacion de amniopatch a las pacientes con columna maxima de liquido amniotico (Cmax) Resultados La edad gestacional (EG) media ± desviacion estandar (DE) en el momento de la amniorrexis fue de 18,2 ± 3,6 semanas. En 13 (26%) ocasiones se realizo un amniopatch. De los 50 casos, 15 pacientes optaron finalmente por una interrupcion legal del embarazo (ILE) y en 35 casos se adopto finalmente una conducta expectante. De los 35 casos que decidieron continuar la gestacion, 12 (34,3%) pacientes presentaron un fallecimiento intrautero o un parto previo a la viabilidad (antes de la semana 24); en 4 (11,4%) casos hubo una muerte anteparto despues de la semana 24 y 4 (11,4%) presentaron una muerte posparto. El lapso de tiempo entre la RPM y el parto mostro una relacion inversa y significativa con la EG de la amniorrexis. Presentaron hipoplasia pulmonar 4 (11,4%) neonatos y en 8 (22,9%) casos hubo una corioamnionitis clinica. Un neonato (2,9%) presento una luxacion congenita de rodilla. Conclusiones Las gestaciones complicadas con RPM antes de las 24 semanas de gestacion presentan un 42,9% de supervivencia con una mortalidad neonatal del 57,1%. Sin embargo, para las gestaciones que superan las 24 semanas de gestacion, la supervivencia mejora notablemente y en nuestra serie se situa en un 65,2%.

Resumen El citomegalovirus (CMV) produce la infeccion congenita mas frecuente (alrededor del 1% de las gestaciones) con una significativa afeccion y secuelas fetales. En ausencia de cribado serologico sistematico, el diagnostico de infeccion fetal suele hacerse a partir de una ecografia habitual, que revela anomalias ecograficas indicativas de tal afeccion. En el caso que se presenta las anomalies aparecieron de forma progresiva, inicialmente una hiperecogenicidad intestinal con oligoamnios en la semana 17 y, posteriormente, ventriculomegalia, hepatomegalia y ascitis en la semana 21, cuando se realizo el diagnostico de la infeccion mediante estudio de la reaccion en cadena de la polimerasa (PCR) en el liquido amniotico.

Resumen Objetivo El objetivo del presente estudio es construir unas curvas de normalidad de la altura uterina (AU) con criterios metodologicos estrictos y evaluar la eficacia diagnostica de su uso en la practica clinica. Sujetos y metodos Entre julio de 2003 y enero de 2004, se seleccionaron de manera aleatoria 16 gestantes para cada semana de edad gestacional (EG) entre las 24 y 42 semanas (un total de 304 gestaciones), en las que se midio la AU de forma estandarizada. Se modelo la media de la medida de la AU para la EG y se construyeron los intervalos de normalidad. Para estudiar el valor diagnostico de la medida de la AU se diseno un estudio retrospectivo de casos y controles. Se considero caso a todos los fetos nacidos en nuestro centro en el ano 2002, con un peso neonatal inferior al percentil 10 para su EG. Como control se eligio el parto inmediatamente posterior a cada caso con un peso neonatal dentro de los limites de normalidad. Mediante un analisis de curvas ROC se selecciono el percentil de corte que optimizaba la sensibilidad y especificidad para la deteccion de peso neonatal inferior al percentil 10. Resultados El modelo matematico seleccionado para ajustar la relacion entre la EG y la AU fue lineal (8,96 + 0,68 EG), con un coeficiente de determinacion (R 2 ) de 0,67, es decir, el modelo explica un 67% de la variabilidad de la AU. Para el estudio de casos y controles se identificaron 135 gestaciones con peso neonatal inferior al percentil 10 de normalidad. El analisis mediante curvas ROC de la variable estandarizada AU para la deteccion de un peso neonatal inferior al percentil 10 mostro como el punto de corte que optimizaba la sensibilidad y la especificidad fue el percentil 10 (el 29 y el 96%, respectivamente). Conclusion El uso clinico de curvas de normalidad de la AU de la poblacion propia puede mejorar la deteccion prenatal de fetos pequenos para su EG y podria permitir mejorar los resultados perinatales.

Bien qu'il existe de multiples moyens d'obtenir l'enfant desire par les femmes homosexuelles, un nombre croissant de couples homosexuels se tournent vers les centres de medecine de la reproduction afin de realiser des inseminations avec sperme de donneur. Cette pratique d'insemination de couples de femmes homosexuelles reste controversee dans le monde de la reproduction. Les donnees retrouvees dans la litterature ne demontrent aucun effet negatif sur le developpement de l'enfant ne au sein d'un couple homosexuel. Les seules objections a aider ces couples sont donc d'ordre purement ethique.

Objective To compare the reliability of Doppler blood flow measurements of the fetal aortic isthmus (AoI) according to whether the sampling plane is obtained from the traditional longitudinal aortic arch (LAA) view or the more recently described three vessels and trachea (3VT) view of the fetal upper mediastinum. Methods Doppler blood flow measurements of pulsatility index (PI), resistance index (RI), peak systolic (PSV), end-diastolic (EDV) and time-averaged maximum (TAMXV) velocities were performed in the AoI of 40 fetuses between 24 and 36 weeks of gestation. All measurements were sampled in two different sonographic planes of the AoI: the LAA view, at a few millimeters beyond the origin of the left subclavian artery, and the 3VT view, just before the V-shaped junction of the aortic and ductal arches. All scans were performed by the same observer. The reliability of Doppler blood flow measurements was assessed by calculating intraclass correlation coefficients (ICCs) and limits of agreement between the two different sonographic sites evaluating the AoI. Results Mean values of PI, RI, PSV, EDV and TAMXV were similar in the LAA and 3VT views. The PI and vascular velocities were reliably measured from both sonographic sites. ICCs for variability of measurements were 0.78, 0.63, 0.63, 0.60 and 0.55 for PI, RI, PSV, EDV and TAMXV, respectively. Limits of agreement revealed minimal disagreement between the two sites of evaluation of the AoI for all measurements. Conclusions On the basis of our observations, Doppler blood flow measurements across the fetal AoI can be reliably obtained from both the 3VT and the traditional LAA sonographic views. Since the transverse upper thoracic 3VT plane is achievable in most fetal positions, Doppler study of the AoI appears to be easier than expected. Copyright © 2005 ISUOG. Published by John Wiley & Sons, Ltd.

Resumen Objetivo Evaluar el impacto que tiene en la estancia hospitalaria la utilizacion de la longitud cervical ecografica en pacientes ingresadas por amenaza de parto pretermino. Material y metodos Estudio prospectivo longitudinal que incluyo una muestra de pacientes ingresadas por amenaza de parto pretermino en 2 unidades de hospitalizacion. En la unidad 1 las pacientes fueron tratadas segun el protocolo habitual, basado en el indice de Bishop y la constatacion de la presencia de dinamica uterina en la monitorizacion. En la unidad 2 se modifico el protocolo de actuacion en funcion de la longitud cervical ecografica, optandose por el alta precoz en las pacientes con una longitud ecografica ≥ 25 mm. Se analizaron las caracteristicas de ambos grupos, la duracion media del ingreso y la tasa de parto antes de 7 dias, 34 y 37 semanas de gestacion en ambas unidades. Resultados Se incluyo en el estudio a un total de 138 pacientes. La tasa de parto antes de 7 dias, 34 y 37 semanas fue similar en las 2 unidades, asi como la incidencia de reingresos. Sin embargo, la estancia media hospitalaria se redujo significativamente en la unidad 2 (6,14 frente a 3,86 dias; p Conclusiones La introduccion de la longitud cervical ecografica en el manejo clinico de pacientes ingresadas por amenaza de parto pretermino puede hacer disminuir la estancia media hospitalaria sin aumentar la tasa de partos prematuros ni los reingresos hospitalarios.

Objective: To compare the efficacy of a combined regimen of misoprostol with vaginal misoprostol for early 2nd-trimester pregnancy termination. Methods: This is a prospective study that includes 79 pregnant women who requested legal termination of 2nd-trimester pregnancy between 13 and 22 weeks. Two regimens of misoprostol were used. Group 1: 400 µg of oral plus 400 µg vaginal misoprostol every 8 h (combined regimen) and group 2: 400 µg of vaginal misoprostol every 3 h up to a maximum of five doses (vaginal regimen). Results: The induction-to-abortion interval was significantly longer in group 1 (25.5 ± 24.45 h) than in group 2 (15 ± 7.14 h) (p = 0.016). The abortion rate within 24 h in group 1 was of 56.8 vs. 85.7% in group 2 (p = 0.006). The hazard rate for vaginal delivery within 24 h was found to be 2.277-fold greater in the group with the combined therapy once controlled for plausible confounders. Conclusions: Our study suggests that oral misoprostol combined with vaginal misoprostol does not reduce the induction-to-abortion interval compared to an exclusively vaginal route when used for early 2nd-trimester pregnancy termination.

Objective To evaluate the impact of ultrasound cervical length measurement on duration of hospital stay in patients admitted for threatened preterm labor. Study design This was a prospective, comparative study in 294 patients with threatened preterm labor in three hospitalization units (Units A, B and C). In the first phase of the study (observational), cervical length was measured by transvaginal ultrasound, but managing physicians were blinded to the results. In the second phase (interventional), physicians from Unit A remained blinded to cervical length information, but Units B and C incorporated these data into their clinical management protocols. Early discharge was contemplated if the cervix measured 25 mm or more on admission (Unit B) or no changes were observed over 48 h (Unit C). Duration of hospital stay and delivery rates within 7 days and before 37 weeks' gestation were recorded. Results Hospital stay was significantly reduced in Units B and C in the interventional phase, while no changes were observed in Unit A. Delivery rates within 7 days and before 37 weeks' gestation were similar in the three units during the two stages of the study. Conclusion Routine use of ultrasound cervical length assessment in patients admitted with threatened preterm labor may reduce the duration of hospital stay without increasing the rate of preterm births. These data should be confirmed by means of an appropriately designed randomized clinical trial. Copyright © 2004 ISUOG. Published by John Wiley & Sons, Ltd.

Objective To construct normal ranges for umbilical artery pulsatility index (UA PI), middle cerebral artery pulsatility index (MCA PI) and cerebroplacental ratio (CPR) in prolonged pregnancies according to strict methodological criteria using polynomial regression analysis. Methods This was a retrospective, cross-sectional observational study involving 140 women, 10 women for each gestational day between 287 and 300 days of gestation. Fetal Doppler parameters were assessed to construct normal reference ranges for UA PI and MCA PI. CPR was calculated as a ratio of MCA PI/UA PI. Results Mathematical modeling of the data demonstrated that the optimal fit was a linear polynomial one. Mean, 5th and 95th centiles were calculated for UA, MCA and CPR and centile curves from the regression analysis were constructed. Conclusions Reference ranges for UA PI, MCA PI and CPR in prolonged pregnancies have been constructed. MCA PI shows a wider range than previously reported in the literature. Copyright © 2004 ISUOG. Published by John Wiley & Sons, Ltd.

Objectives To assess the value of middle cerebral artery Doppler indices obtained from different sampling sites in predicting umbilical cord gases at delivery in prolonged pregnancies. Methods This was a prospective study of consecutive pregnant women referred for prolonged-pregnancy surveillance. The predictive value of distal and proximal middle cerebral artery Doppler indices for cord blood gases was evaluated in women who delivered within 48 h of their last antenatal test using stepwise multiple regression. Results There was a significant linear correlation between proximal and distal middle cerebral artery pulsatility indices (R = 0.777; P < 0.0001), the mean values being 1.49 (SD, 0.45) and 1.56 (SD, 0.47), respectively. There was also a linear correlation between proximal and distal cerebroplacental ratios (R = 0.68; P < 0.0001), the mean values being 1.85 (SD, 1.96) and 1.92 (SD, 1.89), respectively. The stepwise multiple regression analysis for umbilical artery pH showed that once the distal middle cerebral artery pulsatility index was introduced into the model, the addition of any variable did not result in a significant improvement of the predictive capacity. The model showed a coefficient of determination (R2) of 0.079. There was a significant correlation between umbilical artery pO2 and both proximal middle cerebral artery pulsatility index (positive) and the occurrence of elective Cesarean section (negative). This model accounted for 21% of the variance (R2 = 0.21). No other variables added any significant prediction for pO2. Conclusions In post-term pregnancies the proximal middle cerebral artery pulsatility index significantly predicts umbilical artery pO2 at delivery but does not predict pH. There is a weak association between distal middle cerebral artery pulsatility index and pH but, as this only explains 8% of the variance, it is of little clinical value. Copyright © 2004 ISUOG. Published by John Wiley & Sons, Ltd.

Background: to estimate the coverage of HIV testing during pregnancy in Catalonia, to identify factors associated with testing during pregnancy and to assess the recording of screening in medical records and the women's awareness about being tested. Methods: A survey was carried out in 2000 among pregnant women attending hospital, with face-to-face interview 24–48 hours post-delivery, and review of the medical records. Results: Out of 2,132 participants, 76% were from public and 24% from private hospitals. Medical records showed that 88.3% of the participants had a HIV test (94% in public, 71% in private hospitals), while for 3.7% and 18.5% in private and public, respectively, this information was not documented. Overall, 67% of women reported having been tested for HIV during that pregnancy, and unawareness of having been tested was detected in 10.7%. Educational level and prenatal care are determinants for being tested. Conclusion: Catalonia has a good coverage of HIV testing among childbearing women, although it is lower in private hospitals. Frequently prenatal HIV testing is not documented in medical records and women are unaware of it. Improving the prenatal care and tailoring these programmes to specific populations, like migrants or marginalized groups, will result in a better understanding of HIV prevention and in an increase in HIV testing before delivery. Received 13 June 2002. Accepted 12 May 2003.

Objective To compare Doppler evaluation of the ductus venosus and contraction stress test (CST) in the prediction of adverse perinatal outcome in growth-restricted fetuses with evidence of hemodynamic redistribution and a non-reactive non-stress test (NST). Methods Data were collected from all singleton pregnancies seen in our Fetal Surveillance Unit who underwent antenatal monitoring for fetal growth restriction, non-reactive NST and arterial redistribution beyond 26 weeks of pregnancy. Patients were divided into four groups based on their CST and ductus venosus waveform results. Perinatal outcome was evaluated by means of four variables: the need for admission to the neonatal intensive care unit (NICU), need for neonatal intubation, an umbilical artery pH < 7.10 and significant neonatal morbidity. Outcome was compared among fetuses delivered within 3 days of their antenatal test. Logistic regression analysis was used to analyze the relation between predictive and outcome variables. Results Sixty-eight women met the inclusion criteria for the study. The positive predictive value of the CST was 45% for admission to the NICU, 13% for significant neonatal morbidity, 26% for need of neonatal intubation and 29% for umbilical artery pH < 7.10. The positive predictive values of abnormal ductus venosus waveform (ADVW) were 81.5%, 26%, 48% and 55%. Groups with ADVW showed significantly poorer neonatal outcome. No significant differences were observed when CST results were compared. Logistic regression analysis showed that both gestational age at delivery and ADVW significantly predict the occurrence of adverse perinatal outcome. Conclusion In growth-restricted fetuses with hemodynamic redistribution and a non-reassuring NST, Doppler assessment of the ductus venosus correlates with adverse perinatal outcome. In this clinical situation there is no benefit of CST in terms of prediction. Copyright © 2003 ISUOG. Published by John Wiley & Sons, Ltd.

Study question Is the drug used for final oocyte maturation a factor in determining the prevalence of empty follicle syndrome (EFS)? Summary answer The drug used for final oocyte maturation is not a factor in determining the prevalence of EFS among women unaffected by infertility. What is known already Despite satisfactory follicular stimulation and adequate follicular development, cases of EFS, i.e. failure to recover any cumulus oocyte complex, have been reported both with hCG and GnRH agonist triggering. No standard management protocol has been proposed so far. Study design, size, duration Retrospective analysis of oocyte donation cycles performed between August 2006 and April 2013 in a large private fertility centre. Participants/materials, setting, methods The analysis included 12 483 oocyte donation cycles of which 74 were EFS cycles. All cycles were triggered with either hCG or GnRH agonists. Main results and the role of chance There were no differences in the gonadotropic stimulation, pituitary suppression and triggering drug between cycles where oocytes were recovered successfully and EFS cycles. The total prevalence of EFS was 0.59%. Given the rarity of the syndrome, caution is advised when interpreting the analysis. Limitations, reasons for caution The main limitation of this study is its retrospective nature. Although this is the largest analysis of EFS in donors reported so far, its statistical power is limited because the syndrome has a low incidence. In some cycles of EFS from 2006 to 2007 there is a lack of hormone data. Wider implications of the findings Our findings may be generalized to oocyte donors and IVF patients younger than 35 years old, with cycles undergoing final maturation triggering with either hCG or GnRH agonists. The generalization cannot be extended to patients with an ovarian factor as the cause of their reproductive pathology. The theoretical aetiology of a temporary hypothalamic-pituitary hyposensitivity can explain the cycles where a rescue protocol with hCG has been successful. Study funding/competing interests This work was supported in part by funding from Fundacio EUGIN. The authors have no conflicts to declare. Trial registration number NA.

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A study on in-vitro fertilization (IVF) was conducted among HIV-infected women. In these patients, a reduced pregnancy rate after IVF was observed if the patient's own oocytes were used. However, no significant reduction in the pregnancy rate was found if donated oocytes were used. The CD4 lymphocyte count was independently associated with ovarian resistance to hyperstimulation. Subclinical hypogonadism mediated by immunosuppression may explain these observations, suggesting the need to optimize the immunological status of the patient before considering assisted reproduction treatments.

Transmission of HIV-1 from an infected mother to her child occurs in around 20% of cases. Although maternal, immunological, and virological factors have been implicated in transmission, clear association is not yet well defined. For this reason, we have conducted a study to determine the relative contribution of the above-mentioned factors with special emphasis on quantitative viral load. We studied 67 HIV-1-infected mothers during pregnancy and labor and their 69 newborns (two sets of twins) from two university hospitals in Barcelona. Plasma and cell samples were collected at delivery between January 1992 and May 1994, and HIV-1 RNA and p24 in plasma, CD4 cell counts, and tissue culture infectious doses (TCID) were measured. Diagnosis of infection in children was based on persistence of anti-HIV-1 antibodies at 18 months of age, a positive HIV-1 culture or polymerase chain reaction in two separate samples, or presence of signs or symptoms of AIDS before 18 months of age. Results showed a very high relationship between10(5)/ml viral RNA copies (odds ratio [OR] 22, 95% confidence interval [CI] 4.4-119.2, p0.00001),0.5 TCID (OR 17, 95% CI 2.1-139.7, p = 0.001), CDC B + C (OR 3.5, 95% CI 0.98-12.5, p = 0.055),400 CD4 cells (OR 4.1; 95% CL 1.1-15.4, p = 0.01) and transmission of HIV-1. In this study, a strong association between mother-to-child transmission of HIV-1 and a high maternal viral RNA load in plasma at delivery is demonstrated. Viral load, which is related to clinical and immunological status in the mother, is the main contributing factor for HIV-1 vertical transmission, and these findings may have global and even individual therapeutic implications.