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Search Results: 1 - 10 of 429323 matches for " Juan Dubernet M "
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Experiencia de 36 a os con marcapasos implantables: Un análisis histórico A 36 years experience with implantable pacemakers
Juan Dubernet M,Gastón Chamorro S,Jorge González M,Alejandro Fajuri N
Revista médica de Chile , 2002,
Abstract: Background: The implantation of pacemakers improves cardiac function and quality of life, in particular with dual chamber DDD and DDDR modes. Aim: To evaluate our clinical experience and results on pacemaker implantation, from 1963 to 1998. Material and methods: Computerized data collected from 2,445 consecutive paced patients was reviewed. A total of 3,554 operative procedures were performed, including 412 procedures for complications and 697 pacemaker replacement. Patient survival was determined from clinical records, inquiry to pacemaker manufacturers and death certificates from Servicio de Registro Civil e Identificación de Chile (Chilean Civil and Identification Registry). Results: Use of dual chamber (DDD and DDDR) pacemakers increased progressively up to 74% from 1988 to 1998. Complication rate was 42% in the 1963-1976 study period, it decreased to 10.6% in the 1977-1987 study period, and to 5.6% by 1988-1998. Only two patients died during surgery in the study period (0.08%). In the 1977-1987 period, pacemakers lasted 10.6 years. Survival rates were 52% at ten years, 33% at 15 years, and 21% at 20 years, with a median survival of 11.7 years, and 7.24 years in patients over 80 years old. Conclusions: Transvenous permanent pacing can be accomplished today with a low complication rate, mainly due to better technology and surgical procedures (Rev Méd Chile 2002; 130: 132-42)
Cirugía valvular en ni os y adolescentes Surgical treatment in children with valvular heart diseases
Odette Farm A,Horst Kandora B,Guillermo Piwonka C,Juan Dubernet M
Revista chilena de pediatría , 1986,
Abstract:
Experiencia de 36 a?os con marcapasos implantables: Un análisis histórico
Dubernet M,Juan; Chamorro S,Gastón; González M,Jorge; Fajuri N,Alejandro; Jalil M,Jorge; Casanegra P,Pablo; Maturana B,Gustavo; Morán V,Sergio; Zalaquett S,Ricardo; Irarrázaval Ll,Manuel J; Urzúa U,Jorge; Rodríguez V,José A; Braun J,Sandra; Corbalán H,Ramón; González A,Rolando; Marchant D,Eugenio;
Revista médica de Chile , 2002, DOI: 10.4067/S0034-98872002000200002
Abstract: background: the implantation of pacemakers improves cardiac function and quality of life, in particular with dual chamber ddd and dddr modes. aim: to evaluate our clinical experience and results on pacemaker implantation, from 1963 to 1998. material and methods: computerized data collected from 2,445 consecutive paced patients was reviewed. a total of 3,554 operative procedures were performed, including 412 procedures for complications and 697 pacemaker replacement. patient survival was determined from clinical records, inquiry to pacemaker manufacturers and death certificates from servicio de registro civil e identificación de chile (chilean civil and identification registry). results: use of dual chamber (ddd and dddr) pacemakers increased progressively up to 74% from 1988 to 1998. complication rate was 42% in the 1963-1976 study period, it decreased to 10.6% in the 1977-1987 study period, and to 5.6% by 1988-1998. only two patients died during surgery in the study period (0.08%). in the 1977-1987 period, pacemakers lasted 10.6 years. survival rates were 52% at ten years, 33% at 15 years, and 21% at 20 years, with a median survival of 11.7 years, and 7.24 years in patients over 80 years old. conclusions: transvenous permanent pacing can be accomplished today with a low complication rate, mainly due to better technology and surgical procedures (rev méd chile 2002; 130: 132-42)
Collisional excitation of water by hydrogen atoms
F. Daniel,A. Faure,P. J. Dagdigian,M. -L. Dubernet,F. lique,G. Pineau des forêts
Physics , 2014, DOI: 10.1093/mnras/stu2287
Abstract: We present quantum dynamical calculations that describe the rotational excitation of H$_2$O due to collisions with H atoms. We used a recent, high accuracy potential energy surface, and solved the collisional dynamics with the close-coupling formalism, for total energies up to 12 000 cm$^{-1}$. From these calculations, we obtained collisional rate coefficients for the first 45 energy levels of both ortho- and para-H$_2$O and for temperatures in the range T = 5-1500 K. These rate coefficients are subsequently compared to the values previously published for the H$_2$O / He and H$_2$O / H$_2$ collisional systems. It is shown that no simple relation exists between the three systems and that specific calculations are thus mandatory.
On the influence of collisional rate coefficients on the water vapour excitation
F. Daniel,J. R. Goicoechea,J. Cernicharo,M. -L. Dubernet,A. Faure
Physics , 2012, DOI: 10.1051/0004-6361/201219749
Abstract: Water is a key molecule in many astrophysical studies. Its high dipole moment makes this molecule to be subthermally populated under the typical conditions of most astrophysical objects. This motivated the calculation of various sets of collisional rate coefficients (CRC) for H$_2$O (with He or H$_2$) which are necessary to model its rotational excitation and line emission. We performed accurate non--local non--LTE radiative transfer calculations using different sets of CRC in order to predict the line intensities from transitions that involve the lowest energy levels of H$_2$O (E $<$ 900 K). The results obtained from the different CRC sets are then compared using line intensity ratio statistics. For the whole range of physical conditions considered in this work, we obtain that the intensities based on the quantum and QCT CRC are in good agreement. However, at relatively low H$_2$ volume density ($n$(H$_2$) $<$ 10$^7$ cm$^{-3}$) and low water abundance ($\chi$(H$_2$O) $<$ 10$^{-6}$), these physical conditions being relevant to describe most molecular clouds, we find differences in the predicted line intensities of up to a factor of $\sim$ 3 for the bulk of the lines. Most of the recent studies interpreting early Herschel Space Observatory spectra used the QCT CRC. Our results show that although the global conclusions from those studies will not be drastically changed, each case has to be considered individually, since depending on the physical conditions, the use of the QCT CRC may lead to a mis--estimate of the water vapour abundance of up to a factor of $\sim$ 3.
Comparison of prescriber evaluations and patient-directed self-reports in office-based practice for buprenorphine treatment of opiate-dependent individuals in France, 2002
Estelle Lavie, Mélina Fatséas, Jean-Pierre Daulouède, Cécile Denis, Jacques Dubernet, et al
Patient Preference and Adherence , 2008, DOI: http://dx.doi.org/10.2147/PPA.S4136
Abstract: mparison of prescriber evaluations and patient-directed self-reports in office-based practice for buprenorphine treatment of opiate-dependent individuals in France, 2002 Original Research (3834) Total Article Views Authors: Estelle Lavie, Mélina Fatséas, Jean-Pierre Daulouède, Cécile Denis, Jacques Dubernet, et al Published Date November 2008 Volume 2008:2 Pages 369 - 378 DOI: http://dx.doi.org/10.2147/PPA.S4136 Estelle Lavie1, Mélina Fatséas1, Jean-Pierre Daulouède1,2, Cécile Denis1, Jacques Dubernet1, Laurent Cattan3, Marc Auriacombe1 1Laboratoire de psychiatrie/EA4139, INSERM IFR-99 and Faculté de médecine Victor Pachon, University Victor Segalen Bordeaux 2, Bordeaux, France; 2Bizia, Centre de soins d’addictologie, Centre Hospitalier de la C te Basque, Bayonne, France; 3Centre médical, Noisy-le-sec, France Abstract: The objective of this cross-sectional evaluation study was to compare data generated through prescriber assessments, and data generated from independent direct contact with opiate-dependent patients in office-based practice to evaluate buprenorphine treatment for modality of buprenorphine absorption, benzodiazepine use, and depressive symptoms. A group of buprenorphine office-based practice prescribers was selected to participate in this study. They were asked to screen for inclusion all their patients coming for a visit from February to August 2002. Once included by their prescribing physician, patients were given a series of self-administered questionnaires to be returned directly to the research staff, independently of their prescriber. Each prescriber was given a questionnaire to complete based on their knowledge and interview of the patient. Items assessed were history of current treatment, current substance use, buprenorphine treatment related behavior (daily frequency of intake, route of administration), benzodiazepine use and existence of a major depressive episode. Prescribers and patients’ questionnaires were compared. Concordance of both assessments was assessed by kappa statistics. The sensitivity and specificity as well as the positive and negative predictive values of prescriber collected information were compared to that of their patients’. There was an overall good correlation between both data sources on the procedures for buprenorphine use especially for intravenous use of buprenorphine. There were important variations: obtaining buprenorphine without a prescription or with a prescription made by another doctor, intravenous administration of buprenorphine, use of benzodiazepines, and depression were underestimated by prescribers.
Clinical Evaluation of Fluido Compact: A New Intravenous Fluid Warmer  [PDF]
Juan M. Zaballos, Lisette De la Cruz
Open Journal of Anesthesiology (OJAnes) , 2017, DOI: 10.4236/ojanes.2017.74010
Abstract: Unintended peri-operative hypothermia is very common in surgical patients and is associated with adverse outcomes. Perioperative use of forced-air and intravenous fluid warmers is recommended for hypothermia prevention. This study evaluated the ease of use of Fluido Compact, a new fluid warming device, and its ability to help as part of the intraoperative patient temperature management. It was used in 36 patients undergoing scheduled surgery at risk of hypothermia under regional, general or combined anesthesia, of more than one hour duration and with a predicted intravenous fluid administration of at least 1000 ml. The fluid warmer is very easy to set up. The disposable cassette has a very low (3 ml) priming volume and it is easy to handle and to place inside the warming module. Once connected to the main power outlet, it is ready to deliver fluid at target temperature in just a few seconds. Control panel is intuitive, and the one button operation system makes it safe and convenient. The combination of peri-operative patient surface warming with Mistral-Air forced-air warming system and intravenous fluid warming with Fluido Compact, that allowed the administration of IV perfusions at body temperature at the rate needed thus avoiding heat loss, helps to maintain intraoperative core temperature between 36.4°C and 36.8°C. A group of patients undergo a variety of surgical procedures with neuraxial, general or combined epidural-general anesthesia.
Bioassay Directed Identification of Royal Jelly’s Active Compounds against the Growth of Bacteria Capable of Infecting Cutaneous Wounds  [PDF]
Mariana C. Garcia, Mónica S. Finola, Juan M. Marioli
Advances in Microbiology (AiM) , 2013, DOI: 10.4236/aim.2013.32022
Abstract:

Antibiotic-resistant bacteria continue to be of major health concern world-wide. Thus, it is of great interest to study the biological properties and determine active compounds in natural products likely to be used as new health remedies. Therefore, the main objective of this work is to test the antibacterial activity of royal jelly samples, defatted royal jelly samples and their ethyl ether extracts against bacteria capable of infecting cutaneous wounds in humans and animals, and to recognize major bioactive compounds by using bioassay directed identification. The microorganisms used in the study were Staphylococcus aureus (including Methicillin-resistant and sensitive strains), Staphylococcus epidermidis, Micrococcus luteus, Streptococcus uberis, Enterococcus faecalis, Pseudomonas aeruginosa, Escherichia coli, and Klebsiella pneumoniae. The activity of royal jelly samples to inhibit bacterial growth was assessed by using well-difussion tests. Direct bioautography was used to identify bioactivity, and uv-visible spectroscopy and gas chromatography-mass spectrometry were used to identify bioactive compounds. Overall, royal jelly samples showed higher growth inhibition activity against Gram positive bacteria as compared to Gram negative bacteria. The growth of bacterial strains belonging to the Enterococcus and Streptococcus genders was less affected by the presence of royal jelly than bacterial strains of the Staphylococcus gender did. Compounds with antibacterial activity were found in the ethyl ether extract of royal jelly samples. 10-hydroxy-2-decenoic acid was the major component identified in the purified fraction obtained by bioassay guided fractionation of the ethyl ether extract. In conclusion, bioactivity of royal jelly samples is mainly due to their 10-hydroxy-2-decenoic acid content.

Factores tecnológicos, legales y documentales de la preservación documental digital
Voutssas M., Juan;
Investigación bibliotecológica , 2009,
Abstract: today's problematic about the huge world production and accumulation of information conformed as digital or electronic documents is analyzed, as well as the problems related to the risk or possible loss of such information and the different strategies for insuring its preservation. factors which work in favor or against long term preservation of digital documents are studied and established, particularly those of technological, legal or documentary nature.
Factores culturales, económicos y sociales de la preservación documental digital
Voutssas M., Juan;
Investigación bibliotecológica , 2011,
Abstract: the current problem of the huge global production and accumulation of information in the form of electronic or digital documents, and the problem caused by the loss of that information and the possible preservation are analyzed. factors that affect the preservation of long-term digital documents are established and studied in detail, in particular the cultural, economic and social ones.
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