Publications by authors named "Juan Mozas"
Purpose: The aim of this study is to estimate the weight of each relevant factor in such unions of inadvertent consanguinity and to determine a "reasonable" limit for the number of children per donor, matching the probability of inadvertent consanguinity arising from the use of sperm donor in assisted reproduction with that of such a union arising from false paternity.
Methods: In this study, we applied to Spanish data a mathematical model of consanguineous unions, taking into account the following factors: maximum number of live births/donor, fertility rate, average number of births per donor in a pregnancy, donor success rate, matings per phenotype, number of newborns/year, and number of donors needed in the population/year and births by false paternity.
Results: In Spain, the number of inadvertent unions between descendants of the same donor in Spain has been estimated at 0.
Unlabelled: Objetive: identify whether there is an increased risk of adverse perinatal outcomes, like prematurity or decreased weight in newborns, associated with caffeine consumption during the first half of pregnancy in pregnant women of our population.
Methods: transversal study carried out in 1 175 patients from Virgen de las Nieves University Hospital of Granada (Spain). Information about caffeine consumption during first half of gestation and perinatal outcomes was obtained by personal interview, medical records and telephone call after delivery.
Purpose: According to the latest ART report for Europe, about 13% of pregnancies after frozen embryo transfer are multiple. Our objective was to analyse the impact on the multiple pregnancy rate of two eSFET (elective single frozen embryo transfers) versus a DFET (double frozen embryo transfer) in women aged under 38 years, who had not achieved pregnancy in their fresh transfer and who had at least two vitrified embryos of A/B quality.
Methods: This study was conducted from January 2010 to June 2013 at a public hospital.
Purpose: To determine the frequency and distribution of Adverse Events (AE) in obstetrics departments at Spanish hospitals.
Methods: We present a retrospective cohort study including 816 women admitted to the obstetrics departments at 41 hospitals that took part in the National Adverse Effects Study in Spain (ENEAS) and an extension of this study in all hospitals located in two Autonomous Regions. To identify AE, nurses from each participating hospital examined all medical records, and completed a validated screening guide.
Objective: To analyze the impact of the eSET followed by single-embryo cryotransfer versus double embryo transfer in older women (<38 years) without taking into account embryo quality.
Study Design: This is a prospective randomised clinical trial performed on 194 couples attempting a first IVF cycle in a Public Hospital in Spain. The women in Group 1 received eSET plus a single-embryo cryotransfer, and those in Group 2 received a double embryo transfer (DET).
Background: Pelvic inflammatory disease with progression to pelvic abscess is a rare complication after oocyte retrieval during in vitro fertilization cycles. However, in patients with endometriosis the risk appears to be increased. Many authors agree on the need for antibiotic prophylaxis during the oocyte retrieval in these patients, but there is no consensus regarding the best antibiotic.
View Article and Find Full Text PDFBackground: Assisted reproductive technology (ART) with washed semen can achieve pregnancy with minimal risk of horizontal and vertical transmission of chronic viral diseases (CVD) such as human immunodeficiency virus (HIV), hepati- tis C virus (HCV) and hepatitis B virus (HBV) among serodiscordant couples. How- ever, few studies have been made of the use made by these couples of ARTs or of the obstetric results achieved.
Materials And Methods: In this retrospective study, 93 men who were seropositive for HIV, HCV or HBV and who underwent assisted reproduction treatment at our centre (Hospital Universitario Virgen de las Nieves, Granada, Spain) were included.
Purpose: To provide additional information about embryo morphology sonographic assessment and its correlation with yolk sac.
Methods: A systematic study in 200 consecutive cases of missed abortion <10 weeks diagnosed by transvaginal ultrasound.
Results: In 104 gestations of embryos with morphological abnormalities, 88 (84.
Purpose: To study the utility of a training session offered to junior embryologists, comparing the results obtained with those reported by a group of senior embryologists.
Methods: The 62 junior embryologists participanting were asked to decide on the quality of the embryos and theg clinical decision to be taken.
Results: The junior embryologists' success rate following the training course was significantly higher than before for embryo classification (48.
Obstetric and perinatal outcome in women with twin pregnancy and gestational diabetes.
J Matern Fetal Neonatal Med
July 2012
Objective: The aim of this study was to evaluate pregnancy complications and obstetric and perinatal outcomes in women with twin pregnancy and GDM. STUD DESIGN: An observational multicentre retrospective study was performed and 534 pregnant woman and 1068 twins infants allocated into two groups, 257 with GDM and 277 controls, were studied.
Main Outcome Measures: Pregnant women characteristics, hypertensive complications, preterm delivery rate, mode of delivery and birthweight were analysed.
Introduction: Embryo selection can be carried out via morphological criteria or by using genetic studies based on Preimplantation Genetic Screening. In the present study, we evaluate the clinical validity of Preimplantation Genetic Screening with fluorescence in situ hybridization (PGS-FISH) compared with morphological embryo criteria.
Material And Methods: A systematic review was made of the bibliography, with the following goals: firstly, to determine the prevalence of embryo chromosome alteration in clinical situations in which the PGS-FISH technique has been used; secondly, to calculate the statistics of diagnostic efficiency (negative Likelihood Ratio), using 2 × 2 tables, derived from PGS-FISH.
Aim: The purpose of this study is to confirm in our population the decreasing secular trend in the age of menarche (AAM) observed in other European countries. Another aim is to investigate the association between early menarche and breast cancer, metabolic disorders risk or early menopause.
Materials And Methods: We conducted a nationwide population-based study of 1980 Caucasoid Spanish postmenopausal women from 2003 to 2006 to investigate the AAM, the duration of the fertile period and the relation of early menarche with breast cancer and some metabolic disorders.
Objective: Age at natural menopause (ANM) can be considered a complex parameter that depends on the interaction of multiple factors. In the present study, the role of interaction between genetic variants within estrogen synthesis and signalling pathways in the ANM in Spanish women is studied.
Material And Methods: Nine single nucleotide polymorphisms (SNPs) located at different candidate genes related to the estrogen signalling pathway were analysed in 1980 Spanish postmenopausal women.
Factors influencing pregnancy outcome in women with type 2 versus type 1 diabetes mellitus.
Acta Obstet Gynecol Scand
January 2008
Aim: To compare pregnancy outcome and factors related to adverse perinatal outcome in women with type 1 versus type 2 diabetes mellitus (DM).
Material And Methods: Multicentre retrospective study. Some 404 women were studied, 257 with type 1 DM and 147 with type 2 DM.