Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 57
Filtrar
1.
PLoS One ; 17(5): e0264251, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35617343

RESUMO

INTRODUCTION: A caesarean section is a major obstetric procedure that can save the life of mother and child. Its purpose is to protect the mother's health from the complications of childbirth and to protect the baby's health. In sub-Saharan Africa (SSA), there are major inequalities in access to caesarean sections and significant variations in practices to determine the indications for the procedure. Periodic analyses of maternal deaths have shown that more than half of maternal and new born deaths are due to suboptimal care and are therefore potentially preventable. The objective of our study is to assess the impact of health staff training under the PADISS project (to support the health system's integrated development) on the quality of CS procedures in North Kivu, by comparing two periods. MATERIAL AND METHODS: The populations compared were recruited from the referral hospitals in North Kivu, DRC (Democratic Republic of Congo). The first (group 1) was made up of patient files studied retrospectively for the period from 01/11/2013 to 01/01/2016. The second group (group 2), studied prospectively, comprised patient files from June 2019 to January 2020. Obstetric, maternal and foetal data were compared. Statistical analyses were performed using STATA/IC 15.0 for Windows. Univariate and multiple logistic regression was performed to determine which characteristics are associated with maternal and perinatal morbidity and mortality. A p value < 0.05 was considered statistically significant. RESULTS: CS frequency was approximately 17% in both study periods. We observed a CS frequency of about 34% at North Kivu provincial hospital for the two populations studied. The main indications for CS were dystocia, foetal distress and scarred uterus for both populations. In the population studied prospectively, after the implementation of health staff training, there were fewer incidence rate of dystocia, foetal distress and neonatal death, a more complete patient record, shorter hospital stay, and fewer blood transfusions but more incidence rate of scarred uterus, post-operative complications and low birth weight. Intervention had no statistically significant impact on low birth weight (OR = 1.9, p = 0.13), on neonatal mortality (OR = 0.69, p = 0.21). CONCLUSION: Our study shows a decrease in neonatal deaths, dystocia and foetal distress, but an increase in post-operative complications, maternal deaths and cases of scarred uterus and low birth weight. However, multiple logistic regression did no support the conclusion.


Assuntos
Distocia , Morte Materna , Cuidadores , Cesárea , Cicatriz , Feminino , Sofrimento Fetal , Humanos , Recém-Nascido , Gravidez , Estudos Retrospectivos
2.
Eur J Obstet Gynecol Reprod Biol ; 260: 159-165, 2021 May.
Artigo em Inglês | MEDLINE | ID: mdl-33784580

RESUMO

OBJECTIVE: to assess the evidence from multidisciplinary simulation team training in obstetrics that integrates human's factors components on patient outcome. INTRODUCTION: It has been stated that simulation-based education has the potential to improve technical and nontechnical skills. Reports from enquiries into maternal and newborn adverse outcomes, highlight that the majority of incidents are due to a breakdown of communication and a lack of crisis resource management skills (CRM). It is therefore reasonable to think that a better training on teamwork based on simulation will ultimately improve obstetrics care. In order to explore further that idea, we conducted a literature review on patient outcome after a multidisciplinary simulation training in obstetrics. METHOD: Pubmed, Advances in health sciences education, BMC in medical education, BMC in pregnancy and Childbirth, BMJ open, BMJ Simulation and technology enhanced learning were searched from inception to May 2020 for full-text publications in English on interprofessional, multidisciplinary, obstetrics, simulation training, non-technical skills, CRM. Searches were limited to studies with a report on patient outcome after a multidisciplinary simulation program that included elements of CRM. RESULT: Out of the ten studies selected in our review, five were single site before and after prospective studies and five were cluster before and after randomized trials. All the single site studies reported a positive outcome in low and high resource countries. Three single site studies reported a reduction between 41 and 50 % of blood transfusion after simulation team training. Two single studies reported a reduction of maternal mortality by 34 % and a decrease in an adverse obstetrics index outcome from 0.052 to 0.048 with a p-value of 0.05. Cluster studies showed either no change or some improvement in patient outcomes such as a 37 % improvement on weighted obstetrics adverse outcome, a 17 % reduction in the incidence of PPH and a 47 % reduction in the incidence of retained placenta. Stillbirths rate was reduced by 34 % while newborn deaths was down by 62 %. There was also a 15 % reduction of maternal mortality in favor of the trained team after adjustment to the secular mortality trend. Neonatal death from 24 weeks during the first 24 h was also reduced by 83 % in the intervention site compare with an increase by 18 % in the control site. CONCLUSION: There is evidence that simulation team training that includes CRM is associated with better patient outcome. In order to consolidate this finding, appropriate methodology should be used in future studies with the support of health authorities.


Assuntos
Obstetrícia , Treinamento por Simulação , Competência Clínica , Feminino , Humanos , Recém-Nascido , Mortalidade Materna , Obstetrícia/educação , Equipe de Assistência ao Paciente , Gravidez , Estudos Prospectivos
3.
Gynecol Endocrinol ; 37(7): 618-623, 2021 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-33016794

RESUMO

AIM: To assess the birthweight of neonates conceived after fresh and frozen embryo transfers (FET) and, if different, to investigate whether estradiol levels during the late follicular phase were associated with the observed difference. METHODS: Singleton pregnancies from fresh and FET transfers between January 1990 and December 2013 were compared retrospectively. A total of 2885 singleton pregnancies after fresh embryo transfer and 746 after FET were analyzed. Obstetric and neonatal outcomes were compared between fresh and FET cycles. RESULTS: The singletons born after FET were found to have a significantly higher birth weight (3313 g), compared to those born after fresh embryo transfer (3143 g); p < .001. The main predictor of this difference was found to be estradiol levels at the end of the follicular phase. The difference in birthweight was inversely correlated to estradiol levels considering all cycles together but also considering fresh and frozen cycles separately. CONCLUSIONS: Our study demonstrates a link between high estradiol levels and low birth weight of singletons after IVF both in fresh and frozen-thawed embryo transfer cycles. It provides additional support to the involvement of hyperestrogenemia in the process of implantation and on the subsequent fetal development.


Assuntos
Peso ao Nascer , Criopreservação/estatística & dados numéricos , Transferência Embrionária/métodos , Estradiol/sangue , Macrossomia Fetal/epidemiologia , Pré-Eclâmpsia/epidemiologia , Nascimento Prematuro/epidemiologia , Adulto , Diabetes Gestacional/epidemiologia , Feminino , Fertilização in vitro , Fase Folicular/sangue , Humanos , Recém-Nascido de Baixo Peso , Recém-Nascido , Recém-Nascido de muito Baixo Peso , Mortalidade Perinatal , Gravidez , Estudos Retrospectivos
4.
Birth ; 47(1): 115-122, 2020 03.
Artigo em Inglês | MEDLINE | ID: mdl-31746028

RESUMO

OBJECTIVES: Our aim was to compare maternal and neonatal outcomes of women with a low-risk pregnancy attending the "Cocoon," an alongside midwifery-led birth center and care pathway, with women with a low-risk pregnancy attending the traditional care pathway in a tertiary care hospital in Belgium. METHODS: We performed a retrospective cohort study of maternal and neonatal outcomes of women with a low-risk pregnancy who chose to adhere to the Cocoon pathway of care (n = 590) and women with a low-risk pregnancy who chose the traditional pathway of care (n = 394) from March 1, 2014, to February 29, 2016. We performed all analyses using an intention-to-treat approach. RESULTS: In this setting, the cesarean birth rate was 10.3% compared with 16.0% in the traditional care pathway (adjusted odds ratios [aOR] 0.42 [95% CI 0.25-0.69]), the induction rate was 16.3% compared with 30.5% (0.46 [0.30-0.69]), the epidural analgesia rate was 24.9% compared with 59.1% (0.15 [0.09-0.22]), and the episiotomy rate was 6.8% compared with 14.5% (0.31 [0.17-0.56]). There was no increase in adverse neonatal outcomes. Intrapartum and postpartum transfer rates to the traditional pathway of care were 21.1% and 7.1%, respectively. CONCLUSIONS: Women planning their births in the midwifery-led unit, the Cocoon, experienced fewer interventions with no increase in adverse neonatal outcomes. Our study gives initial support for the introduction of similar midwifery-led care pathways in other hospitals in Belgium.


Assuntos
Parto Obstétrico/efeitos adversos , Tocologia/métodos , Complicações do Trabalho de Parto/etiologia , Assistência Perinatal/métodos , Adolescente , Adulto , Bélgica/epidemiologia , Centros de Assistência à Gravidez e ao Parto/estatística & dados numéricos , Parto Obstétrico/métodos , Feminino , Humanos , Recém-Nascido , Modelos Logísticos , Complicações do Trabalho de Parto/epidemiologia , Paridade , Gravidez , Resultado da Gravidez , Estudos Retrospectivos , Adulto Jovem
5.
PLoS One ; 14(6): e0217841, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31226120

RESUMO

BACKGROUND: The relationships between hedonic deficits, type D personality and suicidal ideation were explored in a group of medical students. METHODS: In a cross-sectional study, 382 medical students filled out several questionnaires measuring suicide risk, depression (using the Beck Depression Inventory, i.e. BDI), type D personality (using the type D personality scale-14, i.e. DS-14) and anhedonia (using the anhedonia subscale of the BDI, the Snaith Hamilton Pleasure Scale, the Anticipatory and Consummatory subscales of the Physical Anhedonia Scale). RESULTS: State anhedonia and, in particular, recent change of state anhedonia and not trait anhedonia was significantly associated with suicidal ideation, specifically when depression was controlled for. Negative affectivity component of type D personality and anhedonia were independent predictors of suicidal ideation even when depression was controlled for. Loss of pleasure and not loss of interest was a significant predictor of suicidal ideation. CONCLUSIONS: Change of state anhedonia and its component of loss of pleasure measuring dissatisfaction in life could be a risk factor of suicidal ideation in medical students. Dissatisfaction, particularly in the medical course, could be a strong predictor of suicidal ideation in medical students.


Assuntos
Anedonia , Estudantes de Medicina/psicologia , Ideação Suicida , Personalidade Tipo D , Feminino , Humanos , Modelos Lineares , Masculino , Modelos Teóricos , Análise Multivariada , Psicometria , Adulto Jovem
6.
BMJ Open ; 8(4): e020449, 2018 04 05.
Artigo em Inglês | MEDLINE | ID: mdl-29622576

RESUMO

OBJECTIVES: To investigate the effect of maternal origin on the association between maternal height and the risk of preterm birth (PTB). DESIGN: Retrospective observational cohort study. SETTING: Two of the three Belgian regions, including Brussels-Capital and Walloon regions. PARTICIPANTS: A total of 245 204 women spontaneously delivered live singletons between 2009 and 2013. Maternal nationality at the time of birth included Belgium, Congo, French, Italy, Morocco, Poland, Romania and Turkey. OUTCOMES MEASURES: The outcome variable was spontaneous PTB, defined as childbirth occurring at less than 37 weeks' gestation. RESULTS: Average height, demographic characteristics and the spontaneous PTB rate differed according to maternal origin, defined as maternal nationality at birth. The pattern of association between maternal height and the risk of PTB was not uniform by maternal nationality at birth. The low maternal height category was associated with a statistically significant increased risk of spontaneous PTB for Belgian (adjusted OR (aOR) 1.23, 95% CI 1.16 to 1.32), Italian (aOR 1.48, 95% CI 1.12 to 1.96) and Polish (aOR 1.76, 95% CI 1.11 to 2.78), respectively. However, this association was not observed for the women from Congo, France, Morocco, Romania and Turkey. CONCLUSIONS: The association between height and the risk of PTB was modified by maternal nationality, even for mothers from the same region of the world. For example, there was a significant inverse association for the Belgians and Italians but not for French women. Our data suggest that PTB risk assessment should take into account the specific height of maternal origin.


Assuntos
Estatura , Nascimento Prematuro , Adulto , Bélgica , Feminino , Humanos , Recém-Nascido , Gravidez , Estudos Retrospectivos , Fatores de Risco , Adulto Jovem
7.
PLoS One ; 13(3): e0193619, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-29584785

RESUMO

BACKGROUND: The relationships between anhedonia and suicidal ideation or suicide attempts were explored in a large sample of physicians using the interpersonal psychological theory of suicide. We tested two hypotheses: firstly, that there is a significant relationship between anhedonia and suicidality and, secondly, that anhedonia could mediate the relationships between suicidal ideation or suicide attempts and thwarted belongingness or perceived burdensomeness. METHODS: In a cross-sectional study, 557 physicians filled out several questionnaires measuring suicide risk, depression, using the abridged version of the Beck Depression Inventory (BDI-13), and demographic and job-related information. Ratings of anhedonia, perceived burdensomeness and thwarted belongingness were then extracted from the BDI-13 and the other questionnaires. RESULTS: Significant relationships were found between anhedonia and suicidal ideation or suicide attempts, even when significant variables or covariates were taken into account and, in particular, depressive symptoms. Mediation analyses showed significant partial or complete mediations, where anhedonia mediated the relationships between suicidal ideation (lifetime or recent) and perceived burdensomeness or thwarted belongingness. For suicide attempts, complete mediation was found only between anhedonia and thwarted belongingness. When the different components of anhedonia were taken into account, dissatisfaction-not the loss of interest or work inhibition-had significant relationships with suicidal ideation, whereas work inhibition had significant relationships with suicide attempts. CONCLUSIONS: Anhedonia and its component of dissatisfaction could be a risk factor for suicidal ideation and could mediate the relationship between suicidal ideation and perceived burdensomeness or thwarted belongingness in physicians. Dissatisfaction, in particular in the workplace, may be explored as a strong predictor of suicidal ideation in physicians.


Assuntos
Anedonia , Médicos/psicologia , Ideação Suicida , Tentativa de Suicídio/psicologia , Adulto , Idoso , Estudos Transversais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Inquéritos e Questionários
8.
BMJ Open ; 7(11): e016208, 2017 Nov 08.
Artigo em Inglês | MEDLINE | ID: mdl-29122786

RESUMO

OBJECTIVES: To assess the prevalence of major obstetric haemorrhage managed with peripartum hysterectomy and/or interventional radiology (IR) in Belgium. To describe women characteristics, the circumstances in which the interventions took place, the management of the obstetric haemorrhage, the outcome and additional morbidity of these women. DESIGN: Nationwide population-based prospective cohort study. SETTING: Emergency obstetric care. Participation of 97% of maternities covering 98.6% of deliveries in Belgium. PARTICIPANTS: All women who underwent peripartum hysterectomy and/or IR procedures in Belgium between January 2012 and December 2013. RESULTS: We obtained data on 166 women who underwent peripartum hysterectomy (n=84) and/or IR procedures (n=102), corresponding to 1 in 3030 women undergoing a peripartum hysterectomy and another 1 in 3030 women being managed by IR, thereby preserving the uterus. Seventeen women underwent hysterectomy following IR and three women needed further IR despite hysterectomy. Abnormal placentation and/or uterine atony were the reported causes of haemorrhage in 83.7%. Abnormally invasive placenta was not detected antenatally in 34% of cases. The interventions were planned in 15 women. Three women were transferred antenatally and 17 women postnatally to a hospital with emergency IR service. Urgent peripartum hysterectomy was averted in 72% of the women who were transferred, with no significant difference in need for transfusion. IR procedures were able to stop the bleeding in 87.8% of the attempts. Disseminated intravascular coagulation secondary to major haemorrhage was reported in 32 women (19%). CONCLUSION: The prevalence in Belgium of major obstetric haemorrhage requiring peripartum hysterectomy and/or IR is estimated at 6.6 (95% CI 5.7 to 7.7) per 10 000 deliveries. Increased clinician awareness of the risk factors of abnormal placentation could further improve the management and outcome of major obstetric haemorrhage. A case-by-case in-depth analysis is necessary to reveal whether the hysterectomies and arterial embolisations performed in this study were appropriate or preventable.


Assuntos
Histerectomia/estatística & dados numéricos , Complicações do Trabalho de Parto/epidemiologia , Hemorragia Pós-Parto/epidemiologia , Radiologia Intervencionista/estatística & dados numéricos , Embolização da Artéria Uterina/estatística & dados numéricos , Adulto , Bélgica/epidemiologia , Tratamento de Emergência , Feminino , Humanos , Modelos Logísticos , Complicações do Trabalho de Parto/terapia , Período Periparto , Doenças Placentárias/epidemiologia , Hemorragia Pós-Parto/terapia , Gravidez , Estudos Prospectivos , Fatores de Risco , Inércia Uterina/epidemiologia
9.
J Assist Reprod Genet ; 34(10): 1341-1351, 2017 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-28710674

RESUMO

PURPOSE: The purpose of the present study is to study what is the best predictor of severe ovarian hyperstimulation syndrome (OHSS) in IVF. METHODS: This is a retrospective analysis of all consecutive IVF/intracytoplasmic injection cycles performed during a 5-year period (2009-2014) in a single university fertility centre. All fresh IVF cycles where ovarian stimulation was performed with gonadotrophins and GnRH agonists or antagonists and triggering of final oocyte maturation was induced with the administration of urinary or recombinant hCG were analyzed (2982 patients undergoing 5493 cycles). Because some patients contributed more than one cycle, the analysis of the data was performed with the use of generalized estimating equation (GEE). RESULTS: Severe OHSS was diagnosed in 20 cycles (0.36%, 95% CI 0.20-0.52). The number of follicles ≥10 mm on the day of triggering final oocyte maturation represents the best predictor of severe OHSS in IVF cycles. The cutoff in the number of follicles ≥10 mm with the best capacity to discriminate between women that will and will not develop severe OHSS was ≥15. CONCLUSION: The presence of more than 15 follicles ≥10 mm on the day of triggering final oocyte maturation represents the best predictor of severe OHSS in IVF cycles.


Assuntos
Biomarcadores/análise , Síndrome de Hiperestimulação Ovariana/etiologia , Indução da Ovulação/efeitos adversos , Indução da Ovulação/métodos , Adulto , Gonadotropina Coriônica/urina , Estudos de Coortes , Estradiol/sangue , Feminino , Fertilização in vitro/efeitos adversos , Hormônio Foliculoestimulante/farmacologia , Hormônio Liberador de Gonadotropina/análogos & derivados , Humanos , Técnicas de Maturação in Vitro de Oócitos/métodos , Modelos Logísticos , Hormônio Luteinizante/sangue , Folículo Ovariano/efeitos dos fármacos
10.
Reprod Biomed Online ; 34(1): 11-18, 2017 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-27793549

RESUMO

The aim of this study was to evaluate whether pregnancies resulting from oocyte donation have a higher risk of preeclampsia compared with pregnancies after IVF using autologous oocytes. Propensity score matching on maternal age and parity was carried out on a one to one basis, and a total of 144 singleton pregnancies resulting in delivery beyond 22 gestational weeks, achieved by oocyte donation, were compared with 144 pregnancies achieved through IVF and intracytoplasmic sperm injection with the use of autologous oocytes. All pregnancies were achieved after fresh embryo transfer. Obstetric and neonatal outcomes were compared for each pregnancy. Singleton pregnancies after oocyte donation were associated with a significantly higher risk for preeclampsia (OR 2.4, CI 1.02 to 5.8; P = 0.046), as well as for pregnancy-induced hypertension (OR 5.3, CI 1.1 to 25.2; P = 0.036), and caesarean delivery (OR 2.3, CI 1.4 to 3.7; P = 0.001) compared with pregnancies using autologous oocytes.


Assuntos
Fertilização in vitro , Infertilidade/complicações , Doação de Oócitos , Oócitos/citologia , Pré-Eclâmpsia/epidemiologia , Adulto , Transferência Embrionária , Feminino , Humanos , Hipertensão Induzida pela Gravidez , Ovário/fisiologia , Pré-Eclâmpsia/diagnóstico , Gravidez , Resultado da Gravidez , Estudos Retrospectivos , Risco , Injeções de Esperma Intracitoplásmicas
12.
JMIR Res Protoc ; 5(4): e197, 2016 Oct 11.
Artigo em Inglês | MEDLINE | ID: mdl-27729305

RESUMO

BACKGROUND: Maternal mortality measurement remains a critical challenge, particularly in low and middle income countries (LMICs) where little or no data are available and maternal mortality and morbidity are often the highest in the world. Despite the progress made in data collection, underreporting and translating the results into action are two major challenges that maternal death surveillance systems (MDSSs) face in LMICs. OBJECTIVE: This paper presents a protocol for a scoping review aimed at synthesizing the existing models of MDSSs and factors that influence their completeness and usefulness. METHODS: The methodology for scoping reviews from the Joanna Briggs Institute was used as a guide for developing this protocol. A comprehensive literature search will be conducted across relevant electronic databases. We will include all articles that describe MDSSs or assess their completeness or usefulness. At least two reviewers will independently screen all articles, and discrepancies will be resolved through discussion. The same process will be used to extract data from studies fulfilling the eligibility criteria. Data analysis will involve quantitative and qualitative methods. RESULTS: Currently, the abstracts screening is under way and the first results are expected to be publicly available by mid-2017. The synthesis of the reviewed materials will be presented in tabular form completed by a narrative description. The results will be classified in main conceptual categories that will be obtained during the results extraction. CONCLUSIONS: We anticipate that the results will provide a broad overview of MDSSs and describe factors related to their completeness and usefulness. The results will allow us to identify research gaps concerning the barriers and facilitating factors facing MDSSs. Results will be disseminated through publication in a peer-reviewed journal and conferences as well as domestic and international agencies in charge of implementing MDSS.

13.
J Clin Oncol ; 34(22): 2568-74, 2016 08 01.
Artigo em Inglês | MEDLINE | ID: mdl-27217453

RESUMO

PURPOSE: We have reported previously that after 1-year follow up, gonadotropin-releasing hormone agonist (GnRHa) did not prevent chemotherapy-induced premature ovarian failure (POF) in patients with lymphoma, but may provide protection of the ovarian reserve. Here, we report the final analysis of the cohort after 5 years of follow up. PATIENTS AND METHODS: A total of 129 patients with lymphoma were randomly assigned to receive either triptorelin plus norethisterone (GnRHa group) or norethisterone alone (control group) during chemotherapy. Ovarian function and fertility were reported after 2, 3, 4, and 5 to 7 years of follow up. The primary end point was POF, defined as at least one follicle-stimulating hormone value of > 40 IU/L after 2 years of follow up. RESULTS: Sixty-seven patients 26.21 ± 0.64 years of age had available data after a median follow-up time of 5.33 years in the GnRHa group and 5.58 years in the control group (P = .452). Multivariate logistic regression analysis showed a significantly increased risk of POF in patients according to age (P = .047), the conditioning regimen for hematopoietic stem cell transplant (P = .002), and the cumulative dose of cyclophosphamide > 5 g/m(2) (P = .019), but not to the coadministration of GnRHa during chemotherapy (odds ratio, 0.702; P = .651). The ovarian reserve, evaluated using anti-Müllerian hormone and follicle-stimulating hormone levels, was similar in both groups. Fifty-three percent and 43% achieved pregnancy in the GnRHa and control groups, respectively (P = .467). CONCLUSION: To the best of our knowledge, this is the first long-term analysis confirming that GnRHa is not efficient in preventing chemotherapy-induced POF in young patients with lymphoma and did not influence future pregnancy rate. These results reopen the debate about the drug's benefit in that it should not be recommended as standard for fertility preservation in patients with lymphoma.


Assuntos
Hormônio Liberador de Gonadotropina/agonistas , Linfoma/tratamento farmacológico , Ovário/efeitos dos fármacos , Insuficiência Ovariana Primária/prevenção & controle , Adulto , Feminino , Fertilidade/efeitos dos fármacos , Preservação da Fertilidade/métodos , Humanos , Pessoa de Meia-Idade , Noretindrona/uso terapêutico , Ovário/fisiologia , Estudos Prospectivos , Pamoato de Triptorrelina/administração & dosagem
14.
PLoS One ; 10(9): e0137164, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-26325271

RESUMO

As many chemotherapy regimens induce follicular depletion, fertility preservation became a major concern in young cancer patients. By maintaining follicles at the resting stage, gonadotropin-releasing hormone analogues (GnRHa) were proposed as an ovarian-protective option during chemotherapy. However, their efficacy and mechanisms of action remain to be elucidated. Mice were dosed with cyclophosphamide (Cy, 100-500 mg/kg i.p) to quantify follicular depletion and evaluate apoptosis at different times. We observed a dose-dependent depletion of the follicular reserve within 24 hours after Cy injection with a mean follicular loss of 45% at the dose of 200mg/kg. Apoptosis occurs in the granulosa cells of growing follicles within 12 hours after Cy treatment, while no apoptosis was detected in resting follicles suggesting that chemotherapy acutely affects both resting and growing follicles through different mechanisms. We further tested the ability of both GnRH agonist and antagonist to inhibit oestrus cycles, follicular growth and FSH secretion in mice and to protect ovarian reserve against chemotherapy. Although GnRHa were efficient to disrupt oestrus cycles, they failed to inhibit follicular development, irrespective of the doses and injection sites (sc or im). Around 20% of healthy growing follicles were still observed during GnRHa treatment and serum FSH levels were not reduced either by antagonist or agonist. GnRHa had no effect on Cy-induced follicular damages. Thus, we showed that GnRHa were not as efficient at inhibiting the pituitary-gonadal axis in mice as in human. Furthermore, the acute depletion of primordial follicles observed after chemotherapy does not support the hypothesis that the ovary may be protected by gonadotropin suppression.


Assuntos
Antineoplásicos/efeitos adversos , Ciclofosfamida/efeitos adversos , Hormônio Liberador de Gonadotropina/análogos & derivados , Hormônio Liberador de Gonadotropina/farmacologia , Folículo Ovariano/efeitos dos fármacos , Reserva Ovariana/efeitos dos fármacos , Animais , Relação Dose-Resposta a Droga , Feminino , Camundongos , Camundongos Endogâmicos C57BL , Camundongos Endogâmicos CBA , Modelos Animais , Folículo Ovariano/citologia
15.
J Assist Reprod Genet ; 31(2): 241-7, 2014 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-24317854

RESUMO

PURPOSE: To compare two different vitrification methods to slow freezing method for cryopreservation of human cleavage stage embryos. DESIGN: Prospective randomised trial. SETTING: University assisted reproduction centre. PATIENT(S): 568 patients (mean age 33.4 ± 5.2) from April 2009 to April 2011. METHODS: 1798 supernumerary good-quality cleavage stage embryos in 645 IVF cycles intended to be cryopreserved were randomly allocated to three groups: slow freezing, vitrification with the Irvine® method, vitrification with the Vitrolife® method. MAIN OUTCOME MEASURE(S): Embryo survival and cleavage rates, implantation rate. RESULTS: A total of 1055 embryos were warmed, 836 (79.2%) survived and 676 were finally transferred (64.1%). Post-warming embryos survival rate was significantly higher after vitrification (Irvine: 89.4%; Vitrolife: 87.6%) than after slow freezing (63.8%) (p < 0.001). No differences in survival rates were observed between the two vitrification methods, but a significant higher cleavage rate was observed using Irvine compared to Vitrolife method (p < 0.05). Implantation rate (IR) per embryo replaced and per embryo warmed were respectively 15.8% (41/259) and 12.4% (41/330) for Irvine, 17.0% (40/235) and 12.1% (40/330) for Vitrolife, 21.4% (39/182) and 9.9% (39/395) for slow-freezing (NS). CONCLUSIONS: Both vitrification methods (Irvine and Vitrolife) are more efficient than slow freezing for cryopreservation of human cleavage stage embryos in terms of post-warming survival rate. No significant difference in the implantation rate was observed between the three cryopreservation methods.


Assuntos
Fase de Clivagem do Zigoto , Criopreservação/métodos , Vitrificação , Adulto , Implantação do Embrião , Feminino , Fertilização in vitro , Congelamento , Humanos , Gravidez , Taxa de Gravidez , Taxa de Sobrevida
17.
Cancer Epidemiol ; 37(4): 457-61, 2013 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-23628128

RESUMO

INTRODUCTION: Treatment of cervical carcinoma is affected by the stage of the disease, being most likely curable with early detection. High-risk human papillomavirus (HPV) infection and persistency are necessary to the development of precancerous and cancerous lesions leaving the possibility to detect in time cells progressing in at risk behaviour. METHODS: This study documents the proportion of HPV DNA positivity in 906 samples with cytological result negative for intraepithelial lesion and malignancy (NILM), 220 atypical squamous cells of undetermined significance (ASC-US) samples and 211 low grade intraepithelial lesions (LSIL) samples collected from various pathological laboratories in Brussels, Belgium. RESULTS: The proportion of samples harbouring one or more HPV types was 10.8% (95% confidence interval, 95% CI: 8.8-12.8) in NILM, 34.5% (95% CI: 27.6-40.3) in ASC-US, 54.3% (95% CI: 47.5-61.1) in LSIL, with significant variability of HPV proportion in ASC-US and LSIL between laboratories. CONCLUSION: This study provides an on-site picture, confirming an added value of HPV DNA detection.


Assuntos
Papillomaviridae/isolamento & purificação , Infecções por Papillomavirus/diagnóstico , Displasia do Colo do Útero/virologia , Neoplasias do Colo do Útero/virologia , Adulto , Idoso , Bélgica , DNA Viral/isolamento & purificação , Detecção Precoce de Câncer/métodos , Feminino , Humanos , Pessoa de Meia-Idade , Papillomaviridae/genética , Infecções por Papillomavirus/virologia , Neoplasias do Colo do Útero/diagnóstico , Esfregaço Vaginal , Adulto Jovem , Displasia do Colo do Útero/diagnóstico
18.
BMC Pregnancy Childbirth ; 13: 36, 2013 Feb 11.
Artigo em Inglês | MEDLINE | ID: mdl-23398843

RESUMO

BACKGROUND: If it is well known that obesity increases morbidity for both mother and fetus and is associated with a variety of adverse reproductive outcomes, then few studies have assessed the relation between obesity and neonatal outcomes. This is the aim of the present study after taking into account type of labor and delivery, as well as social, medical and hospital characteristics in a population-based analysis. METHODS: This study used 2009 data from the Belgian birth register data pertaining to the regions of Brussels and Wallonia and included 38,675 consecutive births. Odds ratio and 95% confidence intervals for admission to neonatal intensive care unit, Apgar score, and perinatal mortality were calculated by logistic regression analyses adjusting for medical, social and hospital characteristics using obesity as the primary independent variable. The impact of analyzing all delivery sites together was tested using mixed-effect analyses. RESULTS: The adjusted odds ratio for neonatal intensive care unit admission was higher for obese mothers by 38% compared to non-obese mothers (95% confidence interval (CI): 1.22-1.56), and by 45% (CI: 1.21-1.73) and 34% (CI: 1.10-1.63) after spontaneous and induced labour respectively. The adjusted odds ratio was 1.18 (CI: 0.86-1.63) after caesarean section. The adjusted odds ratio for 1 minute Apgar score inferior to 7 was higher for obese mothers by 31% compared to non-obese mothers (CI: 1.15-1.49) and by 26% (CI: 1.04-1.52) and 38% (CI: 1.12-1.69) after spontaneous and induced labour respectively. The adjusted odds ratio was 1.50 (CI: 0.96-2.36) after caesarean section. The adjusted odds ratio for perinatal mortality was 1.36 (CI: 0.75-2.45) for obese mothers compared to non-obese mothers. CONCLUSIONS: Neonatal admission to intensive care and low Apgar scores were more likely to occur in infants from obese mothers, both after spontaneous and induced labor.


Assuntos
Índice de Apgar , Parto Obstétrico/estatística & dados numéricos , Mortalidade Infantil , Unidades de Terapia Intensiva Neonatal/estatística & dados numéricos , Obesidade , Mortalidade Perinatal , Complicações na Gravidez , Adulto , Bélgica/epidemiologia , Peso ao Nascer/fisiologia , Índice de Massa Corporal , Feminino , Humanos , Recém-Nascido , Modelos Logísticos , Gravidez , Sistema de Registros , Fatores de Risco
19.
Acta Obstet Gynecol Scand ; 92(2): 204-9, 2013 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-22994320

RESUMO

OBJECTIVE: To provide insight into the differential effect of immigration on cesarean section (CS) rates, using the Robson classification. DESIGN: A population-based study using birth certificates from the birth registry of 2009. SETTING: All births in two of the three Belgian regions excluding Flanders. POPULATION: 37 628 deliveries from Belgian and immigrant mothers from sub-Saharan Africa, Maghreb and Eastern Europe. METHODS: Multivariate analyses using CS as the dependent variable and immigration status as the primary independent variable. Several multivariate logistic regression models were built including medical, anthropometric, socio-economic characteristics, and medical interventions. The impact of analyzing all delivery sites together was tested using mixed-effect analyses. MAIN OUTCOME MEASURES: CSs of immigrant subgroups compared with Belgian women. RESULTS: CS rates varied according to immigrant subgroups. Mothers from sub-Saharan Africa had an adjusted odds ratio of 2.06 (1.62-2.63) for CS compared with Belgian natives. Increased risk for mothers from sub-Saharan Africa compared with Belgian natives was found among nulliparous and multiparous women without previous CS, and a term, singleton fetus in cephalic position. In comparison, nulliparous East European mothers with a term singleton fetus in cephalic position in spontaneous labor had an adjusted odds ratio of 0.29 (0.08-0.99) for CS. CONCLUSIONS: CS rates currently vary between Robson categories in immigrant subgroups. Immigrant mothers from sub-Saharan Africa with a term, singleton infant in cephalic position, without previous CS, appear to carry the highest burden.


Assuntos
Cesárea/classificação , Cesárea/estatística & dados numéricos , Emigrantes e Imigrantes/estatística & dados numéricos , África Subsaariana/etnologia , Bélgica/epidemiologia , Índice de Massa Corporal , Feminino , Humanos , Análise Multivariada , Mortalidade Perinatal , Gravidez
20.
J Clin Oncol ; 31(7): 903-9, 2013 Mar 01.
Artigo em Inglês | MEDLINE | ID: mdl-23129737

RESUMO

PURPOSE: To assess the efficacy of gonadotropin-releasing hormone agonist (GnRHa) in preventing chemotherapy-induced ovarian failure in patients treated for Hodgkin or non-Hodgkin lymphoma within the setting of a multicenter, randomized, prospective trial. PATIENTS AND METHODS: Patients age 18 to 45 years were randomly assigned to receive either the GnRHa triptorelin plus norethisterone (GnRHa group) or norethisterone alone (control group) concomitantly with alkylating agents containing chemotherapy. The primary end point was the premature ovarian failure (POF) rate (follicle-stimulating hormone [FSH] ≥ 40 IU/L) after 1 year of follow-up. RESULTS: Eighty-four of 129 randomly assigned patients completed the 1-year follow-up. The mean FSH values were higher in the control group than in the GnRHa group during chemotherapy; however, this difference was no longer observed after 6 months of follow-up. After 1 year, 20% and 19% of patients in the GnRHa and control groups, respectively, exhibited POF (P = 1.00). More than half of patients in each group completely restored their ovarian function (FSH < 10 IU/L), but the anti-Müllerian hormone values were higher in the GnRHa group than in the control group (1.4 ± 0.35 v 0.5 ± 0.15 ng/mL, respectively; P = .040). The occurrence of adverse events was similar in both groups with the exception of metrorrhagia, which was more frequently observed in the control group than the GnRHa group (38.4% v 15.6%, respectively; P = .024). CONCLUSION: Approximately 20% of patients in both groups exhibited POF after 1 year of follow-up. Triptorelin was not associated with a significant decreased risk of POF in young patients treated for lymphoma but may provide protection of the ovarian reserve.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/efeitos adversos , Estradiol/sangue , Hormônio Foliculoestimulante/sangue , Hormônio Liberador de Gonadotropina/agonistas , Linfoma/tratamento farmacológico , Pré-Menopausa , Insuficiência Ovariana Primária/induzido quimicamente , Insuficiência Ovariana Primária/prevenção & controle , Pamoato de Triptorrelina/uso terapêutico , Adulto , Protocolos de Quimioterapia Combinada Antineoplásica/administração & dosagem , Biomarcadores/sangue , Quimioterapia Combinada , Feminino , Seguimentos , Doença de Hodgkin/tratamento farmacológico , Humanos , Luteolíticos/uso terapêutico , Linfoma não Hodgkin/tratamento farmacológico , Pessoa de Meia-Idade , Noretindrona/uso terapêutico , Insuficiência Ovariana Primária/sangue , Estudos Prospectivos , Fatores de Tempo , Falha de Tratamento
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...