[Ectopic pregnancy on tubal obstruction by bilharzia eggs at Meaux medical center (France)].

Bilharzia is the world's second parasitic endemic and its genito-urinary lesions are well described. Ectopic pregnancies on tubal obstruction by bilharzia eggs are reported in African populations. Through a case of clinical observation we report an exceptional case of tubal erythema tubal bilharziasis in a French woman of origin but particularly affectionate by the African woman Africa south of the sahara.

The 2007 International Vocabulary of Metrology (VIM), JCGM 200:2008 [ISO/IEC Guide 99]: Meeting the need for intercontinentally understood concepts and their associated intercontinentally agreed terms.

Unambiguous and consistent concepts and terms such as measurand, metrological traceability, measurement uncertainty, comparability of measurement results, target measurement uncertainty, etc., must govern the description of measurements in order to enable a valid comparison of measurement results. That is not yet the case as numerous workshops over the last decade have shown worldwide and as chemical literature continuously displays.

Stability studies and purification procedure for nitrite solutions in view of the preparation of isotopic reference materials.

The lack of reference materials, accurately certified for nitrite, is a problem in view of the importance of this species for environmental and medical reasons. This work outlines a plan for the preparation of nitrite isotopic reference materials (IRMs) in the form of high purity solutions, certified for their nitrite-nitrogen isotopic composition and nitrite concentration. To achieve the desired accuracy (expanded uncertainty U with a coverage factor k=2 of View Article and Find Full Text PDF

New mathematical models with associated equations for isotope dilution mass spectrometry (IDMS).

Vector models which progressively lead to a general model for isotope dilution mass spectrometry (IDMS) are presented for the case of two 'monitor isotopes' and one blend involved. They enable one to find the boundary conditions for performing IDMS, and cover the cases of highly enriched isotopes, radioactive isotopes and ratios that are given with different denominator. The models identify the key measurements in their simplest form as well as the conditions which minimise the measurement effort and in some cases the propagated measurement uncertainties.

Sepsis due to Clostridium perfringens after pregnancy termination with feticide by cordocentesis: a case report.

We report a case of sepsis due to Clostridium perfringens after termination of pregnancy at 22 weeks with feticide by cordocentesis. Three weeks earlier, the 41-year-old patient had undergone an amniocentesis and a full trisomy 13 karyotype had been discovered. Feticide was performed by injection of thiopental and potassium chloride after percutaneous umbilical foetal blood sampling through the same needle.

"Demonstration" vs. "designation" of measurement competence: the need to link accreditation to metrology.

Formal acceptance of the results of chemical laboratories is increasingly organized through a) accreditation of measuring laboratories nationally and b) mutual recognition of accreditation internationally (through formal Multilateral Recognition Agreements, MRAs). However, real comparability of results of measurements is realized by using common (internationally agreed) measurement scales which make these results traceable to this scale, i.e.

Comparative performance study of ICP mass spectrometers by means of U "isotopic measurements".

The performance of four commercially available ICPMS instruments of three different types was compared by means of uranium "isotopic measurements". Examined were two quadrupole sector (different generation, different manufacturer), one single detector double focusing magnetic sector and one multiple collector double focusing magnetic sector instruments. The same samples of the IRMM-072 series were used under routine conditions to measure the 233U/235U and the 233U/238U ratios which, in these samples, vary over almost three orders of magnitude from approximately 1 to approximately 2 x 10(-3).

Traceability of measurements of radioactivity and of amount of substance.

Comparability of measurement results in space and time are highly desirable to observe whether differences are real, whether concordance of results is real and whether trends over time of the quantity measured, are significant. The metrological way to achieve this, is to make results 'traceable' to a common 'stated reference' (definition in the Vocabulaire International de Metrologie-VIM). This 'stated reference' should be (the value of) the relevant SI unit wherever and whenever possible.

[Use of ultrasonography as a first-line investigation of the uterus. Results of a prospective study].

Objective: To assess the effectiveness of hysterosonography as a first line investigation for uterine bleeding in perimenopausal women.

Methods: 185 women were enrolled in a prospective study. They underwent a hysterosonography indicated for abnormal uterine bleeding or follow-up of a treatment with tamoxifene.

Microscale Synthesis of Fe(PF(3))(5) for Gas Source Mass Spectrometry.

Down-scaling of a cocondensation method to produce volatile pentakis(trifluorophosphine)iron(0) for measuring isotope ratios by gas source mass spectrometry is described. Starting from 10 mg of iron, this method allows synthesis of a sufficient amount of Fe(PF(3))(5) that can be used to measure iron content and/or isotope ratios in real-life samples. The advantage over thermal ionisation mass spectrometry is that more precise determinations of ratios/amounts are possible.

Saline contrast sonohysterography as first-line investigation for women with uterine bleeding.

The objective of this study was to assess the effectiveness of saline contrast sonohysterography (SCSH) as a first-line investigation for perimenopausal women with uterine bleeding. A total of 162 women were enrolled in a prospective study. They underwent SCSH indicated for abnormal uterine bleeding.

Microinvasive carcinoma of the cervix. Rationale for conservative treatment in early squamous cell carcinoma.

Numerous definitions of microinvasive carcinoma (MIC) have been proposed. Taking into account that a classification must be a guide for the evaluation of prognosis and treatment, the authors reviewed the risk of spread in MIC. Two major prognostic factors can be identified in the literature: the volume of the lesion and the presence of capillary-like space involvement (LVI).

[Lymphatic drainage of the uterus. Preliminary results of an experimental study].

We carried out an experimental study on the lymphatic drainage of the uterus in 11 female cadavers. We performed 5 injections of a colored fluid in the corpus uterinum and 6 in the cervix. We observed 2 main routes along the external iliac vessels.

Traceable values for nitrate in water samples by isotope dilution analysis using a small thermionic quadrupole mass spectrometer.

An isotope dilution mass spectrometric procedure was developed for the determination of nitrate in water samples. The isotope dilution experiments were carried out using the Institute for Reference Materials and Measurements's 15N-enriched nitrate spike reference material IRMM-627. Nitrate was isolated from the matrix by precipitating it as nitron nitrate, from which emission of negative thermal NO2-ions was found to be best.

Varicella and pregnancy.

Objective: To appreciate the risk of embryo-foetopathy in case of maternal varicella occurring before 20 weeks of gestation, as well as the maternal complication risk (notably pulmonary) in case of maternal varicella occurring the third trimester of pregnancy.

Method: Over the period from January 1987 to February 1995, 20 patients were managed for maternal varicella confirmed during the pregnancy. From these observations, the authors, by studying the literature, attempt to better specify the real fetal and/or maternal complication risk in case of maternal varicella.

Letter to the Editor: New Values for Silicon Reference Materials, Certified for Isotope Abundance Ratios.

New isotope abundance and relative atomic mass (atomic weight) values - with low, hitherto unattained uncertainty - are reported for two previously described silicon reference materials using a well-known method with an improved isotope-ratio mass spectrometer. These new values are directly traceable to the SI, more specifically to the unit for amount of substance, the mole, and independent of the SI unit of mass and of the Avogadro constant. Besides the residual mass-spectrometric uncertainties, these new values depend in effect only on a recently published direct comparison of the cyclotron frequency in a Penning trap of Si with that of C.

[Prenatal diagnosis of hepatic hemangioendothelioma. Apropos of a case].

An antenatal echography performed at 32 weeks of amenorrhoea revealed a formation in the liver. Other tests during the antenatal period were unable to provide an exact diagnosis which was only established after exploratory laparotomy after birth. A review of the literature showed that this hepatic tumour has been diagnosed in 3 reported cases antenatally.

[The "hazards" of using a Gore-Tex sling in the treatment of stress urinary incontinence].

Objective: To analyze the use of the Gore-Tex in the treatment of exertion incontinence.

Methods: During 1991, two gynecology units used the Mouchel technique and a Goebell-Stoeckel type technique in 72 patients with exertion incontinence, alone in 36 and in combination with a cure for prolapsus in 36 others. Results were analyzed with the chi 2 squared test and the Student's test for paired series.

The IRMM--International Measurement Evaluation Program (IMEP). IMEP-3--trace elements in synthetic and natural water.

The aim of the IRMM--International Measurement Evaluation Program (IMEP) is to test out a possible realization of international measurement comparability for field laboratories through traceability of their measurements to the SI Unit for amount of substance: the mole. In IMEP-3, 10 different trace elements, B, Ca, Cd, Cu, Fe, K, Li, Pb, Rb, and Zn, were determined in a synthetic and a natural water by participating laboratories using their routine methods and graphically compared (in coded form) to certified values, established by IRMM and NIST using an isotope-specific method (Isotope Dilution Mass Spectrometry, Neutron Activation Analysis). The number of participants was 70; 64 laboratories have reported results.

A Three-Ratio Scheme for the Measurement of Isotopic Ratios of Silicon.

This paper proposes a scheme of measurement sequences that has been used for the redetermination of the molar mass (atomic weight) of silicon at the Central Bureau for Nuclear Measurements (now Institute for Reference Materials and Measurements). This scheme avoids correlations among the measured ratios caused by normalizing all ion current measurements to that of the largest ion current. It also provides additional information for checking on the consistency of these ratios within a cycle of scans.

Letter to the Editor: Silicon Reference Materials Certified for Isotope Abundances.

In a series of gas mass-spectrometric measurements performed near the highest attainable accuracy, samples from two highly homogeneous batches of silicon crystals and silica powder were compared directly with a synthetic mixture of the three stable isotopes of silicon. Thereby, this work not only established the "absolute" atomic weight of these batches, but also makes portions of these batches available as an Isotopie Reference Material for accurate isotopic abundance measurements in geochemical and other isotope-abundance studies of silicon.

Rapid accurate isotopic measurements on boron in boric acid and boron carbide.

A procedure is described whereby rapid and accurate isotopic measurements can be performed on boron in boric acid and boron carbide after fusion of these compounds with calcium carbonate. It allows the determination of the isotopic composition of boron in boric acid and boron carbide and the direct assay of boron or the (10)B isotope in boron carbide by isotope-dilution mass spectrometry.