Abstract Uterine rupture in pregnancy is a rare complication that can be life-threatening for the mother and fetus. The severity of the outcomes depends on factors such as size and location of the rupture and speed of intervention. We report a case of uterine rupture at a 26 weeks twins' gestation in a woman with previous laparoscopic myomectomy. She was admitted to the emergency department with abdominal pain and urinary frequency and a urinary tract infection was diagnosed. One week later, she was re-admitted with worsening abdominal pain and hemodynamic instability. An hemoperitoneum and uterine rupture were diagnosed during an emergency laparotomy. The mother survived with no complications. The neonates died on the first day due to complications associated with extreme prematurity. This case outlines that given the severity of a uterine rupture and the nonspecific symptoms associated, a high index of suspicion is mandatory in order to avoid poor outcomes.

Abstract Uterine leiomyomas are the most common gynecologic tumors and occur commonly in women of reproductive age1. Frequently they are asymptomatic, but they can present with abnormal uterine bleeding, abdominal pain and pressure symptoms if there is a large tumor size2. Hemoperitoneum due to spontaneous bleeding from a uterine leiomyoma is an extremely rare situation, with less than 100 cases described in literature3. We report a case of a 46 -year- old woman presenting acute abdominal pain with a spontaneous hemoperitoneum caused by a uterine leiomyoma.

A artrogripose múltipla congénita é um grupo clinica e etiologicamente heterogéneo de doenças, caracterizado pela presença de contraturas envolvendo pelo menos duas áreas corporais distintas. Tem uma incidência de 1 em cada 3000-5000 recém-nascidos. É reportado um caso clínico de artrogripose unifetal em gravidez gemelar monocoriónica biamniótica espontânea. O diagnóstico foi estabelecido após ecografia morfológica, tendo a gravidez decorrido sem outras intercorrências. Após parto por cesariana, confirmou-se o diagnóstico de amioplasia envolvendo os quatro membros. O recém-nascido encontra-se atualmente em processo de reabilitação motora. Está documentado o aumento da incidência de artrogripose unifetal na gravidez gemelar monocoriónica, que parece relacionar-se com alterações vasculares na gravidez inicial. Em situações de amioplasia, é de prever a manutenção de algum grau de dependência e incapacidade motora, mesmo com reabilitação pós-natal.

Arthrogryposis multiplex congenita is a clinically and etiologically heterogeneous group of diseases characterized by presence of contractures involving at least two different body areas. It is observed in one in every 3000-5000 live births. A case of singleton arthrogryposis in a spontaneous monochorionic diamniotic twin pregnancy is reported. Diagnosis was established after morphological ultrasound. There were no further complications during pregnancy. After cesarean delivery, diagnosis of amyoplasia involving the four limbs was confirmed. Newborn is currently undergoing motor rehabilitation. The higher risk of singleton arthrogryposis in monochorionic twin pregnancies is documented and appears to be related with vascular changes early in the course of pregnancy. In amyoplasia, some degree of disability and dependency is expected, even with postnatal rehabilitation.

In this work, it is proposed a new strategy to improve the dispersion of inorganic fillers in polymeric matrices by producing surface carbon nanostructures. Clay/carbon nanofibers particles were prepared and used as fillers to improve the mechanical and thermal properties of ultra-high molecular weight polyethylene (UHMWPE). Thermogravimetry (TG), differential scanning calorimetry (DSC), elemental analyses, Raman, X-ray diffraction (XRD) and scanning electron microscopy (SEM) showed that chemical vapor deposition (CVD) with ethanol at different temperatures, i.e. 700, 800 and 900 °C with and without Fe catalyst, can be used to produce carbon (0.5-3.6 wt.%), mainly as nanofibers, on the clay surface. The use of these clay/carbon particles as fillers in UHMWPE at 1 and 3 wt.% produced an increase in the yield stress from 16 to ca. 20 MPa and Young modulus from 314 MPa for pure UHMWPE to values near 395-408 MPa. Moreover, the presence of the carbon/clay composites led to a strong improvement of the thermal properties of the UHMWPE increasing the decomposition Tonset (degradation start temperature) from 445 up to 472 °C. It was also observed by the crystallization enthalpies that the UHMWPE increased the crystallinity from 55 to 80-85% in the presence of the carbon composites. These results are discussed in terms of the strong interactions of the hydrophobic carbon nanostructures on the clay surface with the polymer hydrophobic chains.

O artigo tem como tema 'as relações entre os termos discurso e psicose na teoria lacaniana. Contrariando a afirmação corrente de que na teoria de Jacques Lacan psicose e discurso seriam termos excludentes, percorre-se trechos do legado de Lacan, com o objetivo de demonstrar que as bases em que os comentadores se apoiam, em sua obra, para sustentar essa afirmação não são tão evidentes.

The topic of this article is the relationship between the terms discourse and psychosis in Lacanian theory. Contrary to the current affirmation that in the Jacques Lacan theory, psychosis and discourse are excluding terms, the author explores excerpts of Lacan's legacy, demonstrating that the bases on which the commentators hinge their work to sustain this affirmation are not so evident.