927 research outputs found
Optimal start in dialysis shows increased survival in patients with chronic kidney disease
Objective
To compare the survival among patients with chronic kidney disease who had optimal starts
of renal replacement therapy, dialysis or hemodialysis, with patients who had suboptimal
starts.
Methods
A retrospective cohort consisting of >18 year-old patients who started renal replacement
therapy, using peritoneal dialysis or hemodialysis, in any public hospital or associated center
of the Andalusian Public Health System, between the 1st of January of 2006 and the 15th of
March of 2017. The optimal start was defined when all the following criteria were met: a
planned dialysis start, a minimum of six-month follow-up by a nephrologist, and a first dialysis
method coinciding with the one registered at 90 days. The information was obtained from
the registry of the Information System of the Transplant Autonomic Coordination of
Andalusia.
Results
A total of 10,692 patients were studied. 4,377 (40.9%) of these patients died. A total of
4,937 patients (46.17%) achieved optimal starts of renal replacement therapy and showed
higher survival rates (HR 0.669; 95% CI 0.628–0.712) in the multivariate analysis of Cox
regression model
Legal and surgical medical aspects of the oblits. Presentation of a case
Introducción: El oblito es un cuerpo extraño olvidado en el interior de un paciente durante una intervención quirúrgica, su incidencia real no es clara pues en muchas ocasiones no se reportan en el medio hospitalario por las implicaciones médico-legales. Informe de caso: Paciente masculino de 41 años de edad, acude al servicio de emergencia por presentar cuadro de apendicitis complicada, se realiza una intervención quirúrgica de emergencia, posteriormente presenta una fístula enterocutánea. Paciente acude a facultativo el cual evidencia a nivel de la herida presencia de cuerpo extraño, el cual es extraído. Discusión: Cuando existen cuadros diagnósticos oscuros posterior a una intervención quirúrgica la sospecha clínica de un oblito se la debe hacer seguido de la realización de los exámenes complementarios y extracción inmediata. Conclusión: La comprensión de esta complicación permitirá tomar medidas preventivas adecuadas y facilitará una pronta sospecha clínica con un diagnóstico oportuno y tratamiento adecuado.Introduction: The oblite is a foreign body forgotten inside a patient during a surgical intervention; its real incidence is not clear because in many cases they are not reported in the hospital because of the medical-legal implications. Case report: A 41-year-old male patient goes to the emergency department for presenting a complicated appendicitis chart, an emergency surgery is performed, subsequently presents an enterocutaneous fistula. Patient goes to the doctor which evidences the presence of a foreign body at the level of the wound, which is extracted. Discussion: When there are dark diagnostic pictures after surgery, the clinical suspicion of an oblite should be followed by the completion of complementary examinations and immediate removal. Conclusion: Understanding this complication will allow adequate preventive measures to be taken and will facilitate prompt clinical suspicion with timely diagnosis and appropriate treatment
Measurement of the B0_s semileptonic branching ratio to an orbitally excited D_s** state, Br(B0_s -> Ds1(2536) mu nu)
In a data sample of approximately 1.3 fb-1 collected with the D0 detector
between 2002 and 2006, the orbitally excited charm state D_s1(2536) has been
observed with a measured mass of 2535.7 +/- 0.6 (stat) +/- 0.5 (syst) MeV via
the decay mode B0_s -> D_s1(2536) mu nu X. A first measurement is made of the
branching ratio product Br(b(bar) -> D_s1(2536) mu nu X).Br(D_s1(2536)->D*
K0_S). Assuming that D_s1(2536) production in semileptonic decay is entirely
from B0_s, an extraction of the semileptonic branching ratio Br(B0_s ->
D_s1(2536) mu nu X) is made.Comment: 7 pages, 2 figures, LaTeX, version with minor changes as accepted by
Phys. Rev. Let
Simultaneous measurement of the ratio B(t->Wb)/B(t->Wq) and the top quark pair production cross section with the D0 detector at sqrt(s)=1.96 TeV
We present the first simultaneous measurement of the ratio of branching
fractions, R=B(t->Wb)/B(t->Wq), with q being a d, s, or b quark, and the top
quark pair production cross section sigma_ttbar in the lepton plus jets channel
using 0.9 fb-1 of ppbar collision data at sqrt(s)=1.96 TeV collected with the
D0 detector. We extract R and sigma_ttbar by analyzing samples of events with
0, 1 and >= 2 identified b jets. We measure R = 0.97 +0.09-0.08 (stat+syst) and
sigma_ttbar = 8.18 +0.90-0.84 (stat+syst)} +/-0.50 (lumi) pb, in agreement with
the standard model prediction.Comment: submitted to Phys.Rev.Letter
Search for W' bosons decaying to an electron and a neutrino with the D0 detector
This Letter describes the search for a new heavy charged gauge boson W'
decaying into an electron and a neutrino. The data were collected with the D0
detector at the Fermilab Tevatron proton-antiproton Collider at a
center-of-mass energy of 1.96 TeV, and correspond to an integrated luminosity
of about 1 inverse femtobarn. Lacking any significant excess in the data in
comparison with known processes, an upper limit is set on the production cross
section times branching fraction, and a W' boson with mass below 1.00 TeV can
be excluded at the 95% C.L., assuming standard-model-like couplings to
fermions. This result significantly improves upon previous limits, and is the
most stringent to date.Comment: submitted to Phys. Rev. Let
Search for R-parity violating supersymmetry via the LLE couplings lambda_{121}, lambda_{122} or lambda_{133} in ppbar collisions at sqrt(s)=1.96 TeV
A search for gaugino pair production with a trilepton signature in the
framework of R-parity violating supersymmetry via the couplings lambda_121,
lambda_122, or lambda_133 is presented. The data, corresponding to an
integrated luminosity of L~360/pb, were collected from April 2002 to August
2004 with the D0 detector at the Fermilab Tevatron Collider, at a
center-of-mass energy of sqrt(s)=1.96 TeV. This analysis considers final states
with three charged leptons with the flavor combinations eel, mumul, and eetau
(l=e or mu). No evidence for supersymmetry is found and limits at the 95%
confidence level are set on the gaugino pair production cross section and lower
bounds on the masses of the lightest neutralino and chargino are derived in two
supersymmetric models.Comment: 9 pages, 4 figures (fig2 includes 3 subfigures
Search for charged Higgs bosons decaying to top and bottom quarks in ppbar collisions
We describe a search for production of a charged Higgs boson, q \bar{q'} ->
H^+, reconstructed in the t\bar{b} final state in the mass range 180 <= M_{H^+}
<= 300 GeV. The search was undertaken at the Fermilab Tevatron collider with a
center-of-mass energy sqrt{s} = 1.96 TeV and uses 0.9 fb^{-1} of data collected
with the D0 detector. We find no evidence for charged Higgs boson production
and set upper limits on the production cross section in the Types I, II and III
two-Higgs-doublet models (2HDMs). An excluded region in the (M_{H^+},tan\beta)
plane for Type I 2HDM is presented.Comment: Submitted to Phys. Rev. Letter
Search for a scalar or vector particle decaying into Zgamma in ppbar collisions at sqrt(s) = 1.96 TeV
We present a search for a narrow scalar or vector resonance decaying into
Zgamma with a subsequent Z decay into a pair of electrons or muons. The data
for this search were collected with the D0 detector at the Fermilab Tevatron
ppbar collider at a center of mass energy sqrt(s) = 1.96 TeV. Using 1.1 (1.0)
fb-1 of data, we observe 49 (50) candidate events in the electron (muon)
channel, in good agreement with the standard model prediction. From the
combination of both channels, we derive 95% C.L. upper limits on the cross
section times branching fraction (sigma x B) into Zgamma. These limits range
from 0.19 (0.20) pb for a scalar (vector) resonance mass of 600 GeV/c^2 to 2.5
(3.1) pb for a mass of 140 GeV/c^2.Comment: Published by Phys. Lett.
Search for resonant diphoton production with the D0 detector
We present a search for a narrow resonance in the inclusive diphoton final
state using 2.7 fb-1 of data collected with the D0 detector at the Fermilab
Tevatron ppbar Collider. We observe good agreement between the data and the
background prediction, and set the first 95% C.L. upper limits on the
production cross section times the branching ratio for decay into a pair of
photons for resonance masses between 100 and 150 GeV. This search is also
interpreted in the context of several models of electroweak symmetry breaking
with a Higgs boson decaying into two photons.Comment: 7 pages, 3 figures
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