Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 10 de 10
Filtrar
1.
Ann R Coll Surg Engl ; 96(7): e6-7, 2014 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-25245713

RESUMO

Left ventricular (LV) pseudoaneurysm is a rare entity and, consequently, there is limited knowledge of the condition's natural history. The most frequent mode of presentation for LV pseudoaneurysm is heart failure with chest pain. However, the variable presentation of this condition requires a high index of suspicion for diagnosis. We report the case of a 75-year-old woman who had suffered an acute myocardial infarction 23 years previously, which resulted in a calcified LV apical aneurysm. Three weeks prior to being referred to our hospital, she was noted by her general practitioner to have a left-sided breast mass although mammography was negative. One week later, she attended the accident and emergency department; she was haemodynamically unstable but was resuscitated successfully. Contrast enhanced computed tomography showed a large haematoma located in the left chest wall communicating with the left ventricle. She underwent emergency cardiac surgical repair. On arrival at the intensive care unit following surgery, her haemodynamic status was unstable, and she deteriorated rapidly and died. With this report, we aim to raise the level of awareness for an apical LV pulsatile mass that could anatomically expand and present as a breast mass or tumour. An early diagnosis and timely surgical intervention is essential in order to achieve better outcomes and avoid detrimental complications.


Assuntos
Aneurisma Roto/diagnóstico por imagem , Neoplasias da Mama/diagnóstico , Ponte de Artéria Coronária/efeitos adversos , Aneurisma Cardíaco/diagnóstico por imagem , Hematoma/diagnóstico , Idoso , Aneurisma Roto/etiologia , Aneurisma Roto/cirurgia , Procedimentos Cirúrgicos Cardíacos/métodos , Ponte de Artéria Coronária/métodos , Diagnóstico Diferencial , Progressão da Doença , Evolução Fatal , Feminino , Aneurisma Cardíaco/etiologia , Aneurisma Cardíaco/fisiopatologia , Ventrículos do Coração , Hematoma/etiologia , Hematoma/cirurgia , Humanos , Infarto do Miocárdio/diagnóstico , Infarto do Miocárdio/cirurgia , Complicações Pós-Operatórias/diagnóstico , Radiografia , Ultrassonografia Mamária/métodos
2.
Ann R Coll Surg Engl ; 96(5): e3-4, 2014 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-24992400

RESUMO

We present the case of a 27-year-old man who underwent percutaneous atrial septal defect (ASD) repair using the Amplatzer(®) (St Jude Medical, St Paul, MN, US) septal occluder (ASO). Six weeks later, he presented with heart failure and was found to have an aorto-right atrial fistulation. He required urgent surgical device explantation and repair of the existing ASD using a pericardial patch repair technique. This is the first case to be reported from the UK describing a delayed aorto-right atrial fistula following percutaneous closure using ASO.


Assuntos
Doenças da Aorta/etiologia , Átrios do Coração , Cardiopatias/etiologia , Dispositivo para Oclusão Septal/efeitos adversos , Seio Aórtico , Fístula Vascular/etiologia , Cateterismo Cardíaco/efeitos adversos , Dispneia/etiologia , Fadiga/etiologia , Sopros Cardíacos/etiologia , Comunicação Interatrial/cirurgia , Humanos , Masculino , Adulto Jovem
3.
Andrologia ; 45(3): 163-70, 2013 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-22731614

RESUMO

Intracytoplasmic morphologically selected sperm injection (IMSI, 6300× magnification with Nomarski contrast) of a normal spermatozoon with a vacuole-free head could improve the embryo's ability to grow to the blastocyst stage and then implant. However, the most relevant indications for IMSI remain to be determined. To evaluate the potential value of IMSI for patients with a high degree of sperm DNA fragmentation (n = 8), different types of spermatozoa were analysed in terms of DNA fragmentation. Motile normal spermatozoa with a vacuole-free head selected at 6300× magnification had a significantly lower mean DNA fragmentation rate (4.1 ± 1.1%, n = 191) than all other types of spermatozoa: non-selected spermatozoa (n = 8000; 26.1 ± 1.5% versus 4.1 ± 1.1%; P < 0.005), motile spermatozoa (n = 444; 20.8 ± 2.7% versus 4.1 ± 1.1%; P < 0.001) and motile, normal spermatozoa selected at 200× magnification (n = 370; 18.7 ± 2.7% versus 4.1 ± 1.1%; P < 0.001) and then motile, morphometrically normal spermatozoa with anterior vacuoles (n = 368; 15.9 ± 2.9% versus 4.1 ± 1.1%; P < 0.05) or posterior vacuoles (n = 402; 22.5 ± 3.6% versus 4.1 ± 1.1%; P < 0.001) selected at 6300× magnification. For patients with high sperm DNA fragmentation rates, selection of normal spermatozoa with a vacuole-free head (6300×) yields the greatest likelihood of obtaining spermatozoa with non-fragmented DNA.


Assuntos
Fragmentação do DNA , Infertilidade Masculina/patologia , Cabeça do Espermatozoide/patologia , Motilidade dos Espermatozoides/fisiologia , Espermatozoides/citologia , Vacúolos/patologia , Humanos , Infertilidade Masculina/genética , Infertilidade Masculina/terapia , Masculino , Análise do Sêmen/métodos , Injeções de Esperma Intracitoplásmicas , Espermatozoides/fisiologia
4.
J Assist Reprod Genet ; 29(10): 1123-34, 2012 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-22890422

RESUMO

PURPOSE: Our objective was to identify a marker for oocyte aneuploidy in follicular fluid (FF) in women with an increased risk of oocyte aneuploidy after controlled ovarian hyperstimulation. MATERIALS AND METHODS: Three groups of oocytes were constituted for polar body screening by FISH (chromosomes 13, 16, 18, 21 and 22): Group 1, advanced maternal age (n = 156); Group 2, implantation failure (i.e. no pregnancy after the transfer of more than 10 embryos; n = 101) and Group 3, implantation failure and advanced maternal age (n = 56). FSH and other proteins were assayed in the corresponding FF samples. RESULTS: Of the 313 oocytes assessed, 35.78 % were abnormal. We found a significant difference between the follicular FSH levels in normal oocytes and abnormal oocytes (4.85 ± 1.75 IU/L vs. 5.41 ± 2.47 IU/L, respectively; p = 0.021). We found that the greater the number of chromosomal abnormalities per oocyte (between 0 and 3), the higher the follicular FSH level. CONCLUSION: High FF FSH levels were associated with oocyte aneuploidy in women having undergone controlled ovarian hyperstimulation.


Assuntos
Aneuploidia , Estradiol/análise , Hormônio Foliculoestimulante/análise , Líquido Folicular/metabolismo , Hormônio Luteinizante/análise , Oócitos/fisiologia , Corpos Polares/fisiologia , Diagnóstico Pré-Implantação/métodos , Adulto , Hormônio Antimülleriano/análise , Hormônio Antimülleriano/metabolismo , Biomarcadores/análise , Estradiol/metabolismo , Feminino , Hormônio Foliculoestimulante/metabolismo , Humanos , Hibridização in Situ Fluorescente , Hormônio Luteinizante/metabolismo , Masculino , Idade Materna , Gravidez , Injeções de Esperma Intracitoplásmicas , Resultado do Tratamento
5.
Reprod Biomed Online ; 18(4): 549-54, 2009 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-19400998

RESUMO

Translocations involving gonosomes are frequent in azoospermic patients and sometimes in oligozoospermic ones, conditions that lead to request for assisted reproduction treatment. This study reports an unexpectedly fertile 49-year-old man bearing a de-novo translocation 46,X,t(Y;10)(q11.2;q15.2) associated with a high chromosomal risk for offspring, and referred for familial investigations after the diagnosis of an unbalanced translocation 46,XX,der(10)t(Y;10)(q11.2;p15.2) in his naturally conceived and mentally retarded daughter. Chromosome molecular investigation confirmed Y long-arm inheritance in the daughter and absence of the Yq deletion in the father. Semen analysis showed a normal sperm count associated with moderate asthenospermia and severe teratospermia. A total of 984 spermatozoa were analysed using fluorescence in-situ hybridization (FISH). Alternate segregation pattern was found in 50.31% of the spermatozoa studied. The frequencies of adjacent I, adjacent II, 3:1 segregation, and diploidy (or 4:0 segregation) were respectively 39.62, 1.63, 7.83, and 0.61%. No interchromosomal effect was observed. This patient is the first fertile man in whom the meiotic segregation pattern of a Y-autosome translocation has been analysed. The imbalance risk was close to those observed for reciprocal translocations, and emphasizes the value of FISH studies in males with a chromosomal translocation in order to provide them a personalized risk evaluation.


Assuntos
Segregação de Cromossomos/genética , Cromossomos Humanos Y/genética , Meiose/genética , Espermatozoides/citologia , Translocação Genética/genética , Humanos , Hibridização in Situ Fluorescente , Padrões de Herança/genética , Masculino , Linhagem , Medição de Risco , Espermatozoides/química
6.
Reprod Biomed Online ; 18(3): 367-73, 2009 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-19298736

RESUMO

Pronuclear morphology has been reported as a good tool for studying embryo development and euploidy. Comparing two groups of women with different aneuploidy risk, women more than 38 years old (n = 28) known to be at high risk of aneuploidy, and women under 30 years old (n = 35), this study investigated whether pronuclear morphology could be used routinely as an alternative to preimplantation genetic screening (PGS) in countries where PGS is prohibited. Pronuclear morphology was evaluated for 301 zygotes and related to embryo quality and pregnancy outcome. For the older women, an increased frequency of zygotes with abnormal polar body and pronuclei alignment was observed, i.e. type gamma, with 93% aneuploidy risk (26.0 versus 15.1% P < 0.05) and fewer zygotes with a good development prognosis (36.4 versus 47.8%; P < 0.05). A1alpha configuration was associated with good implantation rate and was not related to day 2 embryo quality. This configuration was less frequent in the group of women more than 38 years old and among non-pregnant women under 30 years, compared with pregnant women under 30 years old. Pronuclear morphology seemed linked to age, but not associated with embryo quality. A larger study allowing correlation analysis is necessary to confirm the value of these criteria and the link to a woman's age.


Assuntos
Núcleo Celular , Diagnóstico Pré-Implantação , Adulto , Aneuploidia , Desenvolvimento Embrionário , Feminino , Humanos , Gravidez , Resultado da Gravidez , Estudos Retrospectivos
7.
J Assist Reprod Genet ; 26(2-3): 113-7, 2009 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-19184396

RESUMO

INTRODUCTION: Preimplantation genetic diagnosis (PGD) is widely used for women heterozygous for a Robertsonian translocation. Preconceptional diagnosis (PCD), performed before fertilization, may be an alternative to PGD, especially in countries where PGD is restricted or prohibited, as in France. It could also give different information and clarify the influence of reproductive and obstetric history. METHODS: In our study, translocation was diagnosed before ICSI in five cases (group A), and after newborn or fetal aneuploidy or miscarriage in two cases, (group B). RESULTS: First polar body (PB1) analysis using acrocentric centromeric probes was done for 85 PB1s, and aneuploidy rate was at 42.4%. Oocyte aneuploidy rate differed (p<0.0001) between groups A and B (30% vs 84%). Despite the small group sizes, we demonstrate a correlation (p=0.0358) of aneuploidy rate in polar bodies after 2 or more attempts. Three live births were recorded, all in group A. DISCUSSION: PCD could thus be an alternative to PGD. This pilot study also provides new prognostic information taking into account the women's natural history, but further confirmation is required.


Assuntos
Testes Genéticos/métodos , Infertilidade/genética , Cuidado Pré-Concepcional/métodos , Diagnóstico Pré-Implantação , Translocação Genética , Adulto , Aneuploidia , Feminino , Humanos , Infertilidade/terapia , Masculino , Oócitos/patologia , Oócitos/fisiologia , Projetos Piloto , Gravidez , Resultado da Gravidez , Taxa de Gravidez , Injeções de Esperma Intracitoplásmicas/métodos
8.
J Assist Reprod Genet ; 25(11-12): 539-45, 2008.
Artigo em Inglês | MEDLINE | ID: mdl-18972203

RESUMO

PURPOSE: Implantation failure is known to be associated with an increased risk of aneuploidy in embryos, a situation leading to a pre-implantation genetic screening, not allowed in different countries like France. Our aim was to evaluate the gamete aneuploidy incidence in this context, using first polar body and spermatozoa aneuploidy screening. METHODS: Three groups were considered: 11 couples with pregnancy obtained after IVF for female infertility (group 1); 20 couples with pregnancy obtained after IVF for male infertility (group 2); and 35 couples with implantation failure (group 3). In group 3, 28 couples treated by ICSI volunteered for first polar body analysis (PB1). RESULTS: Spermatozoa aneuploidy rate was increased in groups 2 (1.6%) and 3 (2.1%) in comparison to group 1 (0.6%). PB1 aneuploidy rate was 35.4% in group 3. Finally, eight couples (32%) had no particular chromosomal risk in gametes, 15/25 (60%) presented an increased spermatic (>2%) or oocyte (>1/3) aneuploidy rate, and 2/25 (8%) had both. CONCLUSION: Those results confirm that implantation failure has a heterogeneous origin, that gamete chromosome abnormality rate is one of the major contributing factors, and that 1st Polar body and spermatozoa aneuploidy screening or pre-implantation genetics screening may be indicated for these couples.


Assuntos
Aneuploidia , Implantação do Embrião/genética , Espermatozoides/fisiologia , Adulto , Aberrações Cromossômicas , Feminino , Humanos , Hibridização in Situ Fluorescente , Masculino , Gravidez , Contagem de Espermatozoides , Injeções de Esperma Intracitoplásmicas/métodos , Motilidade dos Espermatozoides/genética , Espermatozoides/ultraestrutura
9.
Reprod Biomed Online ; 17(2): 213-9, 2008 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-18681995

RESUMO

The aim of this study was to evaluate the stability of the aneuploidy rate of the first polar body. Knowing the stability of the oocyte aneuploidy rate for each patient would allow the first analysis to be used as a prognostic tool for further attempts at intracytoplasmic sperm injection (ICSI). After a first unsuccessful ICSI attempt with preconceptional screening, 24 women underwent a second attempt. First polar body aneuploidy rates were compared in the course of two successive ovarian stimulations. The first polar body was biopsied after laser dissection of the zona pellucida and five chromosomes were analysed using the MultiVysion polar body multicolour probe panel. A total of 200 polar bodies were analysed; 91 and 109 in the first and second ICSI attempts, respectively. The total aneuploidy rate was identical in the first and second attempts; 44.0% (40/91) and 44.0% (48/109), respectively. The first evaluation of the aneuploidy rate was statistically (P = 0.0007) correlated with the second, with a correlation coefficient, r = 0.707. The stability of the aneuploidy rate in different cohorts from the same patient, if confirmed in a larger series, makes this parameter a useful tool for counselling couples.


Assuntos
Aneuploidia , Oócitos/metabolismo , Oócitos/ultraestrutura , Diagnóstico Pré-Implantação , Adulto , Fase de Clivagem do Zigoto , Estudos de Coortes , Feminino , Humanos , Hibridização in Situ Fluorescente , Infertilidade Feminina/diagnóstico , Infertilidade Feminina/etiologia , Infertilidade Feminina/genética , Infertilidade Feminina/terapia , Masculino , Idade Materna , Oócitos/fisiologia , Gravidez , Diagnóstico Pré-Implantação/métodos , Prognóstico , Reprodutibilidade dos Testes , Fatores de Risco , Injeções de Esperma Intracitoplásmicas
10.
Fertil Steril ; 87(6): 1333-9, 2007 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-17482601

RESUMO

OBJECTIVE: To clarify the mechanisms underlying oocyte abnormalities in meiosis: meiotic nondisjunction of a whole chromosome or premature separation of sister chromatids in two situations of increased chromosomal risk. DESIGN: Preconception diagnosis by first polar-body analysis in two situations of increased chromosomal risk. SETTING: Departments of reproductive biology, cytogenetics, gynecology, and obstetrics. PATIENT(S): First polar body analysis was proposed to 76 patients (91 cycles) for advanced age (AMA; n = 30, 36 cycles), recurrent implantation failure (RIF; >10 embryos transferred without implantation; n = 32, 36 cycles), or both (AMA + RIF; n = 14, 19 cycles), before their intracytoplasmic sperm injection procedure. INTERVENTION(S): First polar-body analysis using fluorescence in situ hybridization. MAIN OUTCOME MEASURE(S): Mechanisms and frequency of aneuploidy. RESULT(S): Three hundred eighty-four oocytes were analyzed by fluorescence in situ hybridization, 130 from women >38 years of age, 171 from women with RIF, and 83 from women with both indications. The oocyte abnormality rate was similar in the three groups, respectively, 38.5%, 40.4%, and 45.8%. The aneuploidy mechanisms were different for women >38 years of age who had no previous implantation failure (AMA) compared with women of whatever age who had implantation failure (P<.05 vs. RIF; P<.001 vs. AMA+RIF), with, respectively, for the AMA, RIF, and AMA+RIF groups, 72.2%, 56.6%, and 49.2% premature separation of sister chromatids and 27.8%, 43.4%, and 50.8% meiotic nondisjunction. In the two implantation-failure groups, we distinguished a subgroup (22% in the RIF group and 33% in AMA+RIF group) of patients with >2/3 abnormal oocytes, suggesting a meiosis alteration. CONCLUSION(S): The mechanisms accounting for oocyte aneuploidy differed in the two clinical situations of advanced maternal age and RIF. Advanced maternal-age aneuploidy was linked to a loss of sister chromatid cohesion that led to one single chromatid abnormality, whereas implantation failure is a much more heterogeneous situation.


Assuntos
Aneuploidia , Fertilização in vitro/estatística & dados numéricos , Oócitos/patologia , Injeções de Esperma Intracitoplásmicas , Adulto , Biópsia , Feminino , Humanos , Cariotipagem , Idade Materna , Oócitos/fisiologia , Injeções de Esperma Intracitoplásmicas/estatística & dados numéricos , Falha de Tratamento
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...