17 research outputs found

    PERFIL DAS PACIENTES DO AMBULATÓRIO DA PÓS GRADUAÇÃO EM VÍDEO HISTEROSCOPIA DA FACULDADE DE CIÊNCIA MÉDICAS DE MINAS GERAIS

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    RESUMO: A Vídeo Histeroscopia diagnóstica tornou-se uma ferramenta valiosa e importante para o ginecologista ao permitir a avaliação direta da cavidade endometrial e o diagnóstico das doenças proliferativas e ou neoplásicas. Alguns anos atrás, isso só poderia ser realizado através de procedimentos cegos e pouco tolerado pelas pacientes. A Histeroscopia é uma ferramenta cada vez mais utilizada, o que torna a avaliação do perfil epidemiológico das pacientes submetidas a esse procedimento uma nuance importante a ser estudada. Logo, o objetivo desse trabalho é avaliar o perfil epidemiológico das pacientes atendidas pela equipe da Pós-graduação em Vídeo Histeroscopia da FCMMG no ambulatório de vídeo Histeroscopia do Hospital São José em Belo Horizonte. Este trabalho trata-se de estudo retrospectivo realizado com análise de prontuários das pacientes atendidas no período entre outubro e dezembro de 2012, e submetidas a vídeo Histeroscopia ambulatorial durante os módulos do curso de pós graduação. Os exames são realizados em caráter eminentemente ambulatorial pelos pós-graduandos sob supervisão direta dos professores. São usados equipamentos com ópticas de 2,9 mm, camisas diagnósticas e de Betochi, com preferência pela última, meio de distensão soro fisiológico, infundido com bomba Histeromat. A técnica utilizada inclui vaginoscopia, sem uso do espéculo ou pinçamento do colo. O espéculo e a instrumentalização do colo foram utilizados caso houvesse alguma dificuldade no acesso ao colo durante o procedimento. Todos os procedimentos foram realizados sem anestesia. Foram incluídos 203 pacientes encaminhadas a vídeo Histeroscopia ambulatorial. A idade média das pacientes foi de 49,7 anos, variando de 17 a 81 anos. Média de paridade 3,2 filhos e considerando sua prole definida em 70,9 % (144 pacientes). Em relação à escolaridade do grupo estudado, a maioria dos pacientes não tinha concluindo o segundo grau, 67,3%, com apenas 5 pacientes relatando ter completado nível superior (2,6%). Relatavam comorbidades à anamnese 115 pacientes (56,6%), sendo as mais relatadas Hipertensão Arterial Sistêmica (HAS) e diabetes, relatadas por 69 e 20 pacientes respectivamente. Todas as pacientes apresentavam exames ecográficos anteriores. As conclusões principais das ecografias se distribuíam: exame normal 16 pacientes (7,8%), miomas em 58 (28,5%), espessamento endometrial em 67 (33%), pólipos em 66 (32,5%). Após avaliação inicial tiveram indicação confirmada e foram submetidas ao procedimento 185 pacientes. Em ordem de frequência, foram levantadas como principais indicações: espessamento endometrial à ecografia (34,0%), sangramento uterino anormal (28,6%) e infertilidade (10,8%). Todas as pacientes deste grupo concluíram seus exames histeroscópicos e os achados identificados foram: cavidade sem alterações 64 pacientes (34,5%), espessamento focal do endométrio 17 (9,1%), sinéquias 9 (4,8%), pólipos 82 (44,3%) e miomas 13 (7,0%). As pacientes atendidas no referido ambulatório de Histeroscopia tiveram todos os atendimentos iniciais em unidade básica de saúde e em sua ampla maioria tiveram confirmada a indicação para o procedimento. Mesmo realizados dentro do contexto de ensino, a efetiva realização do exame com definição diagnóstica para a cavidade uterina foi possível para todo o grupo estudado. Seus achados apontam para uma significativa diminuição da necessidade de procedimentos cirúrgicos hospitalares uma vez que um grande número de pacientes apresentaram exames normais ou alterações focais que tem seu diagnóstico e tratamento completamente efetivados, através de biópsias e pequenas intervenções realizadas durante a Histeroscopia ambulatorial.PALAVRAS-CHAVE: perfil epidemiológico, vídeo Histeroscopia ambulatorial, pós graduaçã

    A study of CP violation in B-+/- -> DK +/- and B-+/- -> D pi(+/-) decays with D -> (KSK +/-)-K-0 pi(-/+) final states

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    A first study of CP violation in the decay modes B±[KS0K±π]Dh±B^\pm\to [K^0_{\rm S} K^\pm \pi^\mp]_D h^\pm and B±[KS0Kπ±]Dh±B^\pm\to [K^0_{\rm S} K^\mp \pi^\pm]_D h^\pm, where hh labels a KK or π\pi meson and DD labels a D0D^0 or D0\overline{D}^0 meson, is performed. The analysis uses the LHCb data set collected in pppp collisions, corresponding to an integrated luminosity of 3 fb1^{-1}. The analysis is sensitive to the CP-violating CKM phase γ\gamma through seven observables: one charge asymmetry in each of the four modes and three ratios of the charge-integrated yields. The results are consistent with measurements of γ\gamma using other decay modes

    Measurement of Upsilon production in collisions at root s=2.76 TeV

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    The production of Υ(1S)\Upsilon(1S), Υ(2S)\Upsilon(2S) and Υ(3S)\Upsilon(3S) mesons decaying into the dimuon final state is studied with the LHCb detector using a data sample corresponding to an integrated luminosity of 3.3 pb1pb^{-1} collected in proton-proton collisions at a centre-of-mass energy of s=2.76\sqrt{s}=2.76 TeV. The differential production cross-sections times dimuon branching fractions are measured as functions of the Υ\Upsilon transverse momentum and rapidity, over the ranges $p_{\rm T} Upsilon(1S) X) x B(Upsilon(1S) -> mu+mu-) = 1.111 +/- 0.043 +/- 0.044 nb, sigma(pp -> Upsilon(2S) X) x B(Upsilon(2S) -> mu+mu-) = 0.264 +/- 0.023 +/- 0.011 nb, sigma(pp -> Upsilon(3S) X) x B(Upsilon(3S) -> mu+mu-) = 0.159 +/- 0.020 +/- 0.007 nb, where the first uncertainty is statistical and the second systematic

    Studies of beauty baryon decays to D0ph− and Λ+ch− final states

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    Study of forward Z + jet production in pp collisions at √s=7 TeV

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    A measurement of the Z(μ+μ)Z(\rightarrow\mu^+\mu^-)+jet production cross-section in pppp collisions at a centre-of-mass energy s=7\sqrt{s} = 7 TeV is presented. The analysis is based on an integrated luminosity of 1.0fb11.0\,\text{fb}^{-1} recorded by the LHCb experiment. Results are shown with two jet transverse momentum thresholds, 10 and 20 GeV, for both the overall cross-section within the fiducial volume, and for six differential cross-section measurements. The fiducial volume requires that both the jet and the muons from the Z boson decay are produced in the forward direction (2.0<η<4.52.0<\eta<4.5). The results show good agreement with theoretical predictions at the second-order expansion in the coupling of the strong interaction.A measurement of the Z(μ+μ)Z(\rightarrow\mu^+\mu^-)+jet production cross-section in pppp collisions at a centre-of-mass energy s=7\sqrt{s} = 7 TeV is presented. The analysis is based on an integrated luminosity of 1.0fb11.0\,\text{fb}^{-1} recorded by the LHCb experiment. Results are shown with two jet transverse momentum thresholds, 10 and 20 GeV, for both the overall cross-section within the fiducial volume, and for six differential cross-section measurements. The fiducial volume requires that both the jet and the muons from the Z boson decay are produced in the forward direction (2.0<η<4.52.0<\eta<4.5). The results show good agreement with theoretical predictions at the second-order expansion in the coupling of the strong interaction

    Measurement of the Bc+B_c^+ meson lifetime using Bc+J/ψμ+νμXB_c^+ \to J/\psi\mu^+ \nu_{\mu} X decays

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    The lifetime of the Bc+B_c^+ meson is measured using semileptonic decays having a J/ψJ/\psi meson and a muon in the final state. The data, corresponding to an integrated luminosity of 2 fb12\mathrm{~fb^{-1}}, are collected by the LHCb detector in pppp collisions at a centre-of-mass energy of 8TeV8\,\mathrm{TeV}. The measured lifetime is τ=509±8±12 fs,\tau = 509 \pm 8 \pm 12 \mathrm{~fs}, where the first uncertainty is statistical and the second is systematic.The lifetime of the Bc+B_c^+ meson is measured using semileptonic decays having a J ⁣/ ⁣ψJ\!/\!\psi meson and a muon in the final state. The data, corresponding to an integrated luminosity of 2 fb12\mathrm{~fb^{-1}}, are collected by the LHCb detector in pppp collisions at a centre-of-mass energy of 8TeV8\,\mathrm{TeV}. The measured lifetime is τ=509±8±12 fs,\tau = 509 \pm 8 \pm 12 \mathrm{~fs}, where the first uncertainty is statistical and the second is systematic.The lifetime of the B c + meson is measured using semileptonic decays having a J / ψ meson and a muon in the final state. The data, corresponding to an integrated luminosity of 2 fb - 1 , are collected by the LHCb detector in p p collisions at a centre-of-mass energy of 8 TeV. The measured lifetime is τ = 509 ± 8 ± 12 fs , where the first uncertainty is statistical and the second is systematic

    Precision measurement of the ratio of the Λb0\Lambda^0_b to B0\overline{B}^0 lifetimes

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    The LHCb measurement of the lifetime ratio of the Λb0\Lambda^0_b to the B0\overline{B}^0 meson is updated using data corresponding to an integrated luminosity of 3.0 fb1^{-1} collected using 7 and 8 TeV centre-of-mass energy pppp collisions at the LHC. The decay modes used are Λb0J/ψpK\overline{\Lambda}^0_b \to J/\psi p K^- and B0J/ψπ+K\overline{B}^0 \to J/\psi \pi^+ K^-, where the π+K\pi^+K^- mass is consistent with that of the K0(892)\overline{K}^{*0}(892) meson. The lifetime ratio is determined with unprecedented precision to be 0.974±0.006±0.0040.974\pm0.006\pm0.004, where the first uncertainty is statistical and the second systematic. This result is in agreement with original theoretical predictions based on the heavy quark expansion. Using the current world average of the B0\overline{B}^0 lifetime, the Λb0\Lambda^0_b lifetime is found to be 1.479±0.009±0.0101.479 \pm 0.009 \pm 0.010 ps

    Measurement of resonant and CPCP components in Bs0J/ψπ+π\overline{B}_s^0\to J/\psi\pi^+\pi^- decays

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    The resonant structure of the decay Bs0J/ψπ+π\overline{B}_s^0\to J/\psi\pi^+\pi^- is studied using data corresponding to 3 fb1^{-1} of integrated luminosity from pppp collisions by the LHC and collected by the LHCb detector. Five interfering π+π\pi^+\pi^- states are required to describe the decay: f0(980), f0(1500), f0(1790), f2(1270)f_0(980),~f_0(1500),~f_0(1790),~f_2(1270), and f2(1525)f_2^{\prime}(1525). An alternative model including these states and a non-resonant J/ψπ+πJ/\psi \pi^+\pi^- component also provides a good description of the data. Based on the different transversity components measured for the spin-2 intermediate states, the final state is found to be compatible with being entirely CPCP-odd. The CPCP-even part is found to be Structure of the decay B¯s0→J/ψπ+π- is studied using data corresponding to 3 fb−1 of integrated luminosity from pp collisions produced by the LHC and collected by the LHCb detector. Five interfering π+π- states are required to describe the decay: f0(980),f0(1500),f0(1790),f2(1270), and f2′(1525). An alternative model including these states and a nonresonant J/ψπ+π- component also provides a good description of the data. Based on the different transversity components measured for the spin-2 intermediate states, the final state is found to be compatible with being entirely CP odd. The CP-even part is found to be <2.3% at a 95% confidence level. The f0(500) state is not observed, allowing a limit to be set on the absolute value of the mixing angle with the f0(980) of <7.7° at a 90% confidence level, consistent with a tetraquark interpretation of the f0(980) substructure.The resonant structure of the decay \overline{B}_s^0\to J/\psi\pi^+\pi^-isstudiedusingdatacorrespondingto3fb is studied using data corresponding to 3 fb^{-1}ofintegratedluminosityfrom of integrated luminosity from ppcollisionsbytheLHCandcollectedbytheLHCbdetector.Fiveinterfering collisions by the LHC and collected by the LHCb detector. Five interfering \pi^+\pi^-statesarerequiredtodescribethedecay: states are required to describe the decay: f_0(980),f_0(1500),f_0(1790),f_2(1270),and, and f_2^{\prime}(1525).Analternativemodelincludingthesestatesandanonresonant. An alternative model including these states and a non-resonant J/\psi \pi^+\pi^-componentalsoprovidesagooddescriptionofthedata.Basedonthedifferenttransversitycomponentsmeasuredforthespin2intermediatestates,thefinalstateisfoundtobecompatiblewithbeingentirely component also provides a good description of the data. Based on the different transversity components measured for the spin-2 intermediate states, the final state is found to be compatible with being entirely CPodd.The-odd. The CPevenpartisfoundtobe-even part is found to be <2.3% at 95% confidence level. The f_0(500)stateisnotobserved,allowingalimittobesetontheabsolutevalueofthemixinganglewiththe state is not observed, allowing a limit to be set on the absolute value of the mixing angle with the f_0(980)of of <7.7^{\circ}at90 at 90% confidence level, consistent with a tetraquark interpretation of the f_0(980)$ substructure

    Search for Majorana neutrinos in Bπ+μμB^- \to \pi^+\mu^-\mu^- decays

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    A search for heavy Majorana neutrinos produced in the Bπ+μμB^- \to \pi^+\mu^-\mu^- decay mode is performed using 3 fb1^{-1} of integrated luminosity collected with the LHCb detector in pppp collisions at center-of-mass energies of 7 TeV and 8 TeV at the LHC. Neutrinos with masses in the range 250-5000 MeV and lifetimes from zero to 1000 ps are probed. In the absence of a signal, upper limits are set on the branching fraction B(Bπ+μμ){\cal{B}}(B^- \to \pi^+\mu^-\mu^-) as functions of neutrino mass and lifetime. These limits are on the order of 10910^{-9} for short neutrino lifetimes of 1 ps or less. Limits are also set on the coupling between the muon and a possible fourth-generation neutrino

    Measurement of charged particle multiplicities and densities in pp collisions root s=7 TeV in the forward region

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    Charged particle multiplicities are studied in proton-proton collisions in the forward region at a centre-of-mass energy of s=7  \sqrt{s} = 7\;TeV with data collected in 2010 by the LHCb detector. The forward spectrometer allows access to a kinematic range of 2.0<η<4.82.0<\eta<4.8 in pseudorapidity, momenta down to 2  2\;GeV/cc and transverse momenta down to 0.2  0.2\;GeV/cc. The measurements are performed using minimum-bias events with at least one charged particle in the kinematic acceptance. The results are presented as functions of pseudorapidity and transverse momentum and are compared to predictions from several Monte Carlo event generators.Charged particle multiplicities are studied in proton-proton collisions in the forward region at a centre-of-mass energy of s=7  \sqrt{s} = 7\;TeV with data collected by the LHCb detector. The forward spectrometer allows access to a kinematic range of 2.0<η<4.82.0<\eta<4.8 in pseudorapidity, momenta down to 2  2\;GeV/cc and transverse momenta down to 0.2  0.2\;GeV/cc. The measurements are performed using minimum-bias events with at least one charged particle in the kinematic acceptance. The results are presented as functions of pseudorapidity and transverse momentum and are compared to predictions from several Monte Carlo event generators.Charged particle multiplicities are studied in proton–proton collisions in the forward region at a centre-of-mass energy of s = 7 TeV with data collected by the LHCb detector. The forward spectrometer allows access to a kinematic range of 2.0 < η < 4.8 in pseudorapidity, momenta greater than 2 GeV/ c and transverse momenta greater than 0.2 GeV/ c . The measurements are performed using events with at least one charged particle in the kinematic acceptance. The results are presented as functions of pseudorapidity and transverse momentum and are compared to predictions from several Monte Carlo event generators
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