328 results on '"Schurtz, G."'
Search Results
102. Compression phase study of the HiPER baseline target
- Author
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Ribeyre, X, primary, Nicolaï, Ph, additional, Schurtz, G, additional, Olazabal-Loumé, M, additional, Breil, J, additional, Maire, P H, additional, Feugeas, J L, additional, Hallo, L, additional, and Tikhonchuk, V T, additional
- Published
- 2008
- Full Text
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103. Laser-plasma interactions in the context of inertial fusion research
- Author
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Tikhonchuk, V. T., primary, Depierreux, S., additional, Honrubia, J. J., additional, Labaune, C., additional, Santos, J. J., additional, Schurtz, G., additional, Hartfuss, Hans-Jürgen, additional, Dudeck, Michel, additional, Musielok, Jozef, additional, and Sadowski, Marek J., additional
- Published
- 2008
- Full Text
- View/download PDF
104. Erratum: Revisiting Nonlocal Electron-Energy Transport in Inertial-Fusion Conditions [Phys. Rev. Lett.98, 095002 (2007)]
- Author
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Schurtz, G., primary, Gary, S., additional, Hulin, S., additional, Chenais-Popovics, C., additional, Gauthier, J.-C., additional, Thais, F., additional, Breil, J., additional, Durut, F., additional, Feugeas, J.-L., additional, Maire, P.-H., additional, Nicolaï, P., additional, Peyrusse, O., additional, Reverdin, C., additional, Soullié, G., additional, Tikhonchuk, V., additional, Villette, B., additional, and Fourment, C., additional
- Published
- 2007
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- View/download PDF
105. Revisiting Nonlocal Electron-Energy Transport in Inertial-Fusion Conditions
- Author
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Schurtz, G., primary, Gary, S., additional, Hulin, S., additional, Chenais-Popovics, C., additional, Gauthier, J.-C., additional, Thais, F., additional, Breil, J., additional, Durut, F., additional, Feugeas, J.-L., additional, Maire, P.-H., additional, Nicolaï, P., additional, Peyrusse, O., additional, Reverdin, C., additional, Soullié, G., additional, Tikhonchuk, V., additional, Villette, B., additional, and Fourment, C., additional
- Published
- 2007
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- View/download PDF
106. A practical nonlocal model for heat transport in magnetized laser plasmas
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Nicolaï, Ph. D., primary, Feugeas, J.-L. A., additional, and Schurtz, G. P., additional
- Published
- 2006
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- View/download PDF
107. EXPERIMENTAL AND NUMERICAL TECHNIQUES TO INVESTIGATE AND TO MODEL DYNAMIC FRAGMENTATION OF LASER SHOCK-LOADED METALS.
- Author
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de Rességuier, T., Lescoute, E., Chevalier, J. M., Maire, P. H., Breil, J., and Schurtz, G.
- Subjects
NUMERICAL analysis ,DYNAMIC models ,FRAGMENTATION reactions ,LASER peening ,DOPPLER velocimetry ,COMPUTER simulation - Abstract
Complementary techniques are combined to investigate dynamic fragmentation and shrapnel generation in laser shock-loaded samples of aluminium and gold, which will be two constituents of the target assemblies designed for the inertial confinement fusion experiments to be performed on large scale laser facilities. Fast optical transverse shadowgraphy is used to observe and analyze fragment ejection while Photonic Doppler Velocimetry provides time-resolved measurements of the free surface velocity. Experimental results are compared with two-dimensional numerical simulations involving a phenomenological fragmentation model based on a probabilistic distribution of material tensile strength within the sample. Although not physically-based at this preliminary stage, the model is shown to provide consistent predictions over the explored range of sample thickness and laser intensity. [ABSTRACT FROM AUTHOR]
- Published
- 2012
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- View/download PDF
108. Numerical simulations of hydrodynamic instabilities: Perturbation codes PANSY, PERLE, and 2D code CHIC applied to a realistic LIL target
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Hallo, L., Olazabal-Loumé, M., Maire, P. H., Breil, J., Morse, R.-L., Schurtz, G., Hallo, L., Olazabal-Loumé, M., Maire, P. H., Breil, J., Morse, R.-L., and Schurtz, G.
- Abstract
This paper deals with ablation front instabilities simulations in the context of direct drive ICF. A simplified DT target, representative of realistic target on LIL is considered. We describe here two numerical approaches: the linear perturbation method using the perturbation codes Perle (planar) and Pansy (spherical) and the direct simulation method using our Bi-dimensional hydrodynamic code Chic. Numerical solutions are shown to converge, in good agreement with analytical models.
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- 2006
- Full Text
- View/download PDF
109. A model for the nonlocal transport and the associated distribution function deformation in magnetized laser-plasmas
- Author
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Nicolaï, Ph., Feugeas, J.-L., Schurtz, G., Nicolaï, Ph., Feugeas, J.-L., and Schurtz, G.
- Abstract
We present a model of nonlocal transport for multidimensional radiation magneto hydrodynamic codes. In laser produced plasmas, it is now believed that the heat transfert can be strongly modified by the nonlocal nature of the electron conduction. Nevertheless other mechanisms as self generated magnetic fields may affect heat transport too. The model described in this work aims at extending the formula of G. Schurtz, Ph. Nicolaï and M. Busquet [1] to magnetized plasmas. A system of nonlocal equations is derived from kinetic equations with self-consistent electric and magnetic fields. These equations are analyzed and applied to a physical problem in order to demonstrate the main features of the model.
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- 2006
- Full Text
- View/download PDF
110. A nonlocal electron conduction model for multidimensional radiation hydrodynamics codes
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Schurtz, G. P., primary, Nicolaï, Ph. D., additional, and Busquet, M., additional
- Published
- 2000
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111. Evolution of the target design for the MJ laser
- Author
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HOLSTEIN, P.A., primary, CHALAND, F., additional, CHARPIN, C., additional, DUFOUR, J.M., additional, DUMONT, H., additional, GIORLA, J., additional, HALLO, L., additional, LAFFITE, S., additional, MALINIE, G., additional, SAILLARD, Y., additional, SCHURTZ, G., additional, VANDENBOOMGAERDE, M., additional, and WAGON, F., additional
- Published
- 1999
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112. Progress in inertial confinement fusion physics at Centre d'Etudes de Limeil-Valenton
- Author
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André, M., primary, Babonneau, D., additional, Bayer, C., additional, Bernard, M., additional, Bocher, J-L., additional, Bruneau, J., additional, Coudeville, A., additional, Coutant, J., additional, Dautray, R., additional, Decoster, A., additional, Decroisette, M., additional, Desenne, D., additional, Dufour, J-M., additional, Garçonnet, J-P., additional, Holstein, P-A., additional, Jadaud, J-P., additional, Jolas, A., additional, Juraszek, D., additional, Lachkar, J., additional, Lascaux, P., additional, Breton, J-P. Le, additional, Louis-Jacquet, M., additional, Meyer, B., additional, Mucchielli, F., additional, Rousseaux, C., additional, Schirmann, D., additional, Schurtz, G., additional, Véron, D., additional, and Watteau, J-P., additional
- Published
- 1994
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113. ICF-related experiments at CEL-V
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Andre, M., primary, Bayer, C., additional, Babonneau, D., additional, Bernard, M., additional, Bocher, J. L., additional, Bruneau, J., additional, Coudeville, A., additional, Coutant, J., additional, Dautray, R., additional, Decoster, A., additional, Decroisette, M., additional, Desenne, D., additional, Duborgel, B., additional, Dufour, J. M., additional, Jadaud, J. P., additional, Juraszek, D., additional, Garçonnet, J. P., additional, Holstein, P. A., additional, Lachkar, J., additional, Louis-Jacquet, M., additional, Mucchielli, F., additional, Meyer, B., additional, Lebreton, J. P., additional, Ouvry, J., additional, Schirmann, D., additional, Schurtz, G., additional, Véron, D., additional, and Watteau, J. P., additional
- Published
- 1992
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114. Measurements of Self-Generated Magnetic Fields Influence on Electron Heat Conduction in Dense Plasmas.
- Author
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Lancia, L., Fourment, C., Nakatsutsumi, M., Hulin, S., Bastiani-Ceccotti, S., Santos, J. J., Gauthier, M., Le Gloahec, M., Feugeas, J.-L., Nicolaï, Ph., Schurtz, G., Audebert, P., Fuchs, J., and Migliorati, M.
- Subjects
RADIOGRAPHY ,PROTONS ,MAGNETIC fields ,LASER plasmas ,MAGNETICS ,DIFFUSION - Abstract
Proton radiography measurements of self generated magnetic fields developing in long pulse (ns), high-power laser plasma interactions were employed to investigate the influence of these fields on the propagation of heat flow in dense plasmas. During the experiments, the heat wave propagation speed was measured simultaneously with the fields. These two coupled measurements could give an insight on the limitations of current numerical models of heat transport. They suggest that non locality of heat transport and diffusion of magnetic fields are important to model correctly the interaction. [ABSTRACT FROM AUTHOR]
- Published
- 2010
- Full Text
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115. High order scheme for the non-local transport in ICF plasmas
- Author
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Feugeas, J.-L., Nicolaï, Ph., Schurtz, G., Charrier, P., Ahusborde, E., Feugeas, J.-L., Nicolaï, Ph., Schurtz, G., Charrier, P., and Ahusborde, E.
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- 2006
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116. Investigation of laser plasmas relevant to shock ignition at PALS
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Nejdl, J., Kozlová, M., Sawicka, M., Margarone, D., Krus, M., Prokupek, J., Rus, B., Batani, D., Antonelli, L., Patria, A., Ciricosta, O., Cecchetti, C., Koester, P., Labate, L., Giulietti, A., Gizzi, L. A., Moretti, A., Richetta, M., Schurtz, G., Ribeyre, X., Lafon, M., Spindloe, C., and O'Dell, T.
- Abstract
We present the results of an experiment concerning laser-plasma interaction in the regime relevant to shock ignition. The interaction of high-intensity frequency tripled laser pulse with CH plasma preformed by lower intensity pre-pulse on fundamental wavelength of the kJ-class iodine laser was investigated in the planar geometry in order to estimate the coupling of the laser energy to the shock wave or parametric instabilities such as stimulated Raman or Brillouin scattering, or to the fast electrons. First the complete characterization of the hydrodynamic parameters of preformed plasma was made using crystal spectrometer to estimate the electron temperature and XUV probe to resolve the electron density profile close to the critical density region. The other part of the experiment consisted of the shock chronometry, calorimetry of the back-scattered light and hard X-ray spectrometry to evaluate the coupling to different processes. The preliminary analysis of the measurements showed rather low energy transfer of the high-intensity pulse to back-scattered light (< 5%) and no traces of any significant hot electron production were found in the X-ray spectra.
- Published
- 2011
- Full Text
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117. Parametric instabilities study in a shock ignition relevant regime
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Cecchetti, C. A., Giulietti, A., Koester, P., Labate, L., Levato, T., Gizzi, L. A., Antonelli, L., Patria, A., Batani, D., Kozlová, M., Margarone, D., Nejdl, J., Rus, B., Sawicka, M., Lafon, M., Ribeyre, X., and Schurtz, G.
- Abstract
Inertial Confinement Fusion with Shock Ignition relies on a very strong shock created by a laser pulse at an intensity of the order of 1016W/cm2. In this context, an experimental campaign at the Prague Asterix Laser System (PALS) has been carried out within the frame of the HiPER project. Two beams have been used, the first to create an extended preformed plasma (scale length of the order of hundreds of micrometers) on a planar target, the second to generate a strong shock wave. Different diagnostics were used to study both the shock breakout at the rear surface of the target and the laserplasma coupling and parametric instabilities. This paper is focused on back-scattering analysis to measure the backreflected energy and to characterize parametric instabilities such as stimulated Brillouin and Raman scattering. Our experimental data show that parametric instabilities do not play a strong role in the laser plasma coupling. Moreover, preliminary analysis of the back reflected light from the interaction region shows that less than 5% of the total incident laser energy was back-reflected, with only a small fraction of that light was originating from parametric instabilities.
- Published
- 2011
- Full Text
- View/download PDF
118. A model for the nonlocal transport and the associated distribution function deformation in magnetized laser-plasmas
- Author
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Nicola?, Ph., Feugeas, J.-L., and Schurtz, G.
- Abstract
We present a model of nonlocal transport for multidimensional radiation magneto hydrodynamic codes. In laser produced plasmas, it is now believed that the heat transfert can be strongly modified by the nonlocal nature of the electron conduction. Nevertheless other mechanisms as self generated magnetic fields may affect heat transport too. The model described in this work aims at extending the formula of G. Schurtz, Ph. Nicola? and M. Busquet [1] to magnetized plasmas. A system of nonlocal equations is derived from kinetic equations with self-consistent electric and magnetic fields. These equations are analyzed and applied to a physical problem in order to demonstrate the main features of the model.
- Published
- 2006
119. A Dynamic Analysis of the Medium Tank Battalion. Volume II
- Author
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NAVAL WAR COLL NEWPORT RI CENTER FOR ADVANCED RESEARCH, Schurtz, G. P., Lowe, M. J., Steele, J. J., NAVAL WAR COLL NEWPORT RI CENTER FOR ADVANCED RESEARCH, Schurtz, G. P., Lowe, M. J., and Steele, J. J.
- Abstract
An analysis of alternative organizations of the U.S. Army Medium Tank Battalion is conducted using the computer-assisted war game BATTLE (Battle Analyzer and Tactical Trainer for Local Engagements). The purpose of this study is to determine the best organization to conduct an active defense in a non- toxic conventional environment against Soviet breakthrough tactics. The scope of the study is limited to operational aspects of a defensive battle conducted by a tank battalion with not more than fifty-four tanks, an organic anti-tank (TOW) company, and an attached mechanized infantry company. Attack helicopter and close air support are excluded. Weapons performance characteristics are for those systems in the U.S. and Soviet active inventory. A battalion with 4 tanks in a platoon, 3 platoons in a company, and 4 tank companies in the battalion provides the best organization to defeat a Soviet attack with minimum losses. Target servicing capability, fire distribution, survivability, and flexibility are found to be the best compared to all other alternatives examined., See also Volume 1, AD-A058 118.
- Published
- 1978
120. An experimental study of laser-plasma coupling in a shock-ignition relevant regime
- Author
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Gizzi, L. A., Antonelli, L., Atzeni, S., Badziak, J., Cecchetti, C., Chodukowski, T., Dubzak, R., Giuffrida, L., Kalinowska, Z., Koester, P., Kozlová, M., Krousky, E., Krus, M., Labate, L., Levato, T., Margarone, D., Marocchino, A., Moretti, A., Nejdl, J., O, T., Patria, A., Pisarczyk, T., Renner, O., Ribeyre, X., MARIA RICHETTA, Rosinski, M., Rus, B., Sawicka, M., Skala, J., Schiavi, A., Schurtz, G., Smid, M., Spindloe, C., Ullshimied, J., Wolowski, J., and Batani, D.
- Subjects
Laser plasma interaction, laser-driven shock waves, parametric instabilities ,Settore FIS/01 - Fisica Sperimentale ,Laser plasma interaction ,parametric instabilities ,laser-driven shock waves
121. Experimental and Numerical Study of Dynamic Fragmentation in Laser Shock-Loaded Gold and Aluminium Targets
- Author
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Lescoute, E., Resseguier, T., Chevalier, J. -M, Breil, J., Pierre-Henri Maire, and Schurtz, G.
122. Hydrodynamic and symmetry safety factors of Hiper's targets
- Author
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Hallo, L., Olazabal-Loumé, M., Dréan, V., Xavier Ribeyre, Schurtz, G., Feugeas, J. -L, Breil, J., and Maire, P. -H
123. Effect of aspirin in addition to oral anticoagulants in stable coronary artery disease outpatients with an indication for anticoagulation
- Author
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Schurtz G, Bauters C, Ducrocq G, NICOLAS LAMBLIN, and Lemesle G
124. Study of laser-matter interaction in an intensity regime relevant for shock ignition
- Author
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Antonelli, L., Batani, D., Patria, A., Ciricosta, O., Labate, L., Koester, P., Cecchetti, C., Gizzi, L., Jaroslav Nejdl, Kozlova, M., Rus, B., Moretti, A., Richetta, M., and Schurtz, G.
- Subjects
Nuclear and High Energy Physics ,Settore FIS/01 - Fisica Sperimentale
125. Physics of laser plasma interaction in the context of shock ignition
- Author
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Ondrej Klimo, Riconda, C., Weber, S., Limpouch, J., Ribeyre, X., Schurtz, G., and Tikhonchuk, V.
126. 038 - Pulsatility as modulator of acquired VWF defect in a pig model of continuous-flow ventricular assist device.
- Author
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Vincent, F., Rauch, A., Loobuyck, V., Moussa, M., Vincentelli, A., Staels, B., Lemesle, G., Corseaux, D., Schurtz, G., Lenting, P.J., Rousse, N., Nix, C., Susen, S., and Van Belle, E.
- Published
- 2017
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- View/download PDF
127. Experimental results performed in the framework of the HIPER European Project
- Author
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Batani, D., Koenig, M., Baton, S., Perez, F., Gizzi, L. A., Koester, P., Labate, L., Honrubia, J., Debayle, A., Santos, J., Schurtz, G., Hulin, S., Ribeyre, X., Fourment, C., Nicolai, P., Vauzour, B., Gremillet, L., Nazarov, W., Pasley, J., Tallents, G., Richetta, M., Lancaster, K., Spindloe, Ch., Tolley, M., Neely, D., Norreys, P., Kozlova, M., Nejdl, J., Rus, B., Antonelli, L., Morace, A., L, Volpe, Davies, J., Wolowski, J., and Badziak, J.
- Abstract
This paper presents the goals and some of the results of experiments conducted within the Working Package 10 (Fusion Experimental Programme) of the HiPER Project. These experiments concern the study of the physics connected to "Advanced Ignition Schemes", i.e. the Fast Ignition and the Shock Ignition Approaches to Inertial Fusion. Such schemes are aimed at achieving a higher gain, as compared to the classical approach which is used in NIF, as required for future reactors, and making fusion possible with smaller facilities. In particular, a series of experiments related to Fast Ignition were performed at the RAL (UK) and LULI (France) Laboratories and were addressed to study the propagation of fast electrons (created by a short-pulse ultra-high-intensity beam) in compressed matter, created either by cylindrical implosions or by compression of planar targets by (planar) laser-driven shock waves. A more recent experiment was performed at PALS and investigated the laser-plasma coupling in the 1016W/cm2intensity regime of interest for Shock Ignition.
- Published
- 2011
- Full Text
- View/download PDF
128. HiPER targetry: production and strategy
- Author
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Tolley, M., ben Saïd, F., Koresheva, E., Perin, J. P., Perlado, J. M., Schaumann, G., Schurtz, G., and Spindloe, C.
- Abstract
The HiPER project is moving into an R&D phase with an increasingly clear vision of the stages required to demonstrate inertial fusion energy (IFE) as a power source. One of the major technical challenges will be to demonstrate the production and delivery to chamber of microtargets. The project baseline targets and Targetry-relevant system requirements are reviewed. An update is given of the current status of the HiPER Targetry workpackage summarising the coordinated range of progress which has been made within the project's Preparatory phase. A forward strategy is then presented in the context of the Targetry technology development plan. The full delivery plan is complex and only its essential structure will be presented in this paper focussing primarily on mass production issues and risk reduction. General technical issues of significance for Targetry are also discussed.
- Published
- 2011
- Full Text
- View/download PDF
129. Thromboembolic events in peripartum cardiomyopathy: results from the ESC EORP PPCM registry
- Author
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Tromp, Jasper, Jackson, Alice M, Abdelhamid, Magdy, Fouad, Doaa, Youssef, Ghada, Petrie, Mark C, Bauersachs, Johann, Sliwa, Karen, van der Meer, Peter, Gale, C P, Beleslin, B., Budaj, A., Chioncel, O., Dagres, N., Danchin, N., Emberson, J., Erlinge, D., Glikson, M., Gray, A., Kayikcioglu, M., Maggioni, A P, Nagy, V K, Nedoshivin, A., Petronio, A-S, Roos-Hesselink, J., Wallentin, L., Zeymer, U., Bauersachs, J., Sliwa, K., Boehm, M., Johnson, M., Hilfiker-Kleiner, D., Mbakwem, A., Mebazaa, A., Mouquet, F., Petrie, M., Pieske, B., Regitz-Zagrosek, V., Schaufelberger, M., Seferovic, P M, Tavazzi, L., van der Meer, P., Van Spaendonck-Zwarts, K., Favaloro, R., Favaloro, L., Carballo, M., Peradejordi, M., Renedo, M F, Absi, D., Bertolotti, A., Ratto, R., Talavera, M L, Gomez, R., Lockwood, S., Barton, T., Austin, M-A, Arstall, M., Aldridge, E., Chow, Y Y, Dekker, G., Mahadavan, G., Rose, J., Wittwer, M., Hoppe, U., Sandhofer, A., Bahshaliyev, A., Gasimov, Z., Babayev, A., Niftiyev, P., Hasanova, I., AlBannay, R., AlHaiki, W., Husain, A., Mahdi, N., Kurlianskaya, A., Lukyanchyk, M., Shatova, O., Troyanova-Shchutskaia, T., Anghel, L., De Pauw, M., Gevaert, S., De Backer, J., De Hosson, M., Vervaet, P., Timmermans, P J, Janssen, A., Yameogo, N V, Kagambega, L J, Cumyn, A., Caron, N., Cote, A-M, Sauve, N., Nkulu, D Ngoy, Lez, D Malamba, Yolola, E Ngoy, Krejci, J., Poloczkova, H., Ersboll, A., Gustafsson, F., Elrakshy, Y., Hassanein, M., Hammad, B., Eldin, O Nour, Fouad, D., Salman, S., Zareh, Z., Abdeall, D., Elenin, H Abo, Ebaid, H., El Nagar, A., Farag, S., Saed, M., El Rahman, Y H Abd, Ibrahim, B S, Abdelhamid, M., Hanna, R N W, Youssef, G., Awad, R., Botrous, O L I, Halawa, S Ibrahim, Nasr, G., Saad, A., El Tahlawi, M., Abdelbaset, M., El-Saadawy, M., El-Shorbagy, A., Shalaby, G., Anttonen, O., Tolppanen, H., Hamekoski, S., Menez, T., Noel, A., Lamblin, N., Coulon, C., de Groote, P., Langlois, S., Schurtz, G., Cohen-Solal, A., Fournier, M-C, Louadah, B., Akrout, N., Logeart, D., Leurent, G., Jovanova, S., Arnaudova-Dezulovicj, F., Livrinova, V., Berliner, D., Jungesblut, M., Koenig, T., Moulig, V A, Pfeffer, T J, Böhm, M., Kindermann, I., Schwarz, V., Schmitt, C., Swojanowsky, P., Pettit, S., McAdam, M., Patton, D., Bakhai, A., Krishnamurthy, V., Lim, L., Clifford, P., Bowers, N., Clark, A L, Witte, K., Cullington, D., Oliver, J., Simms, A., Mcginlay, M., McDonagh, T., Shah, A M, Amin-Youssef, G., De Courcey, J., Martin, K., Shaw, S., Vause, S., Wallace, S., Malin, G., Wick, C., Nikolaou, M., Rentoukas, I., Chinchilla, H., Andino, L., Iyengar, S., Chandra, S., Yadav, D K, Babu, R Ravi, Singh, A K, Kumar, S., Karunamay, B B, Chaubey, S K, Dhiman, S R, Jha, V C, Singh, S K, Kodati, D., Dasari, R., Sultana, S., Dewi, T I, Prameswari, H Sasmaya, Al-Farhan, H A, Al-Hussein, A., Yaseen, I F, Al-Azzawi, Falah, Al-Saedi, Ghazi, Mahmood, G M, Mohammed, M K, Ridha, A F, Shotan, A., Vazan, A., Goland, S., Biener, M., Senni, M., Grosu, A., Martin, E., Esposti, D Degli, Bacchelli, S., Borghi, C., Metra, M., Sciatti, E., Orabona, R., Sani, F., Brunetti, N D, Sinagra, G., Bobbo, M., D'Agata Mottolese, B., Gesuete, V., Rakar, S., Ramani, F., Kamiya, C., Barasa, A., Ngunga, M., Bajraktari, G., Hyseni, V., Lleshi, D., Pllana, E., Pllana, T., Noruzbaeva, A., Ismailov, F., Mirrakhimov, E., Abilova, S., Lunegova, O., Kerimkulova, A., Osmankulova, G., Duishenalieva, M., Kurmanbekova, B., Turgunov, M., Mamasaidova, S., Bektasheva, E., Kavoliūnienė, Aušra, Muckienė, Gintarė, Vaitiekienė, Audronė, Čelutkienė, Jelena, Balkevičienė, Laura, Barysienė, Jūratė, Chee, K H, Damasceno, A., Machava, M., van Veldhuisen, D J, van den Berg, M., van Hagen, I., Baris, L., Hurtado, P., Ezeonu, P., Isiguzo, G., Obeka, N., Onoh, R., Asogwa, F., Onyema, C., Otti, K., Ojji, D., Odili, A., Nwankwo, A., Karaye, K., Ishaq, N., Sanni, B., Abubakar, H., Mohammed, B., Sani, M., Kehinde, M., Afolabi, B., Amadi, C., Kilasho, M., Qamar, N., Furnaz, S., Gurmani, S., Kayani, M G A Mahmood, Munir, R., Hussain, S., Malik, S., Mumtaz, S., Saligan, J R, Rubis, P., Biernacka-Fijalkowska, B., Lesniak-Sobelga, A., Wisniowska-Smialek, S., Kasprzak, J D, Lelonek, M., Zycinski, P., Jankowski, L., Grajek, S., Oko-Sarnowska, Z., Rutkowska, A Bartczak, Kaluzna-Oleksy, M., Plaskota, K., Demkow, M., Dzielinska, Z., Henzel, J., Kryczka, K., Moiseeva, O., Irtyuga, O., Karelkina, E., Zazerskaya, I., Milinkovic, I., Živkovic, I., Ristic, A D, Milasinovic, D., Kong, W Kf, Tan, L K, Tan, J L, Thain, S., Poh, K K, Yip, J., Azibani, F., Hovelmann, J., Viljoen, C., Briton, O., Zamora, E., Orcajo, N Alonso, Carbonell, R., Pascual, C., Muncharaz, J Farre, Alonso-Pulpon, L., Cubero, J Segovia, Urquia, M Taibo, Garcia-Pavia, P., Gomez-Bueno, M., Cobo-Marcos, M., Briceno, A., Galvan, E De Teresa, Garcia-Pinilla, J M, Robles-Mezcua, A., Morcillo-Hildalgo, L., Elbushi, A., Suliman, A., Ahamed, N., Jazzar, K., Murtada, M., Goloskokova, V., Hullin, R., Yarol, N., Arrigo, M., Cavusoglu, Y., Eraslan, S., Fak, A S, Enar, S Catirli, Sarac, L., Cankurtaran, B., Gumrukcuoglu, H., Ozturk, F., Omagino, J., Mondo, C., Lwabi, P., Ingabire, P., Nabbaale, J., Nyakoojo, W., Okello, E., Sebatta, E., Ssinabulya, I., Atukunda, E., Kitooleko, S., Semu, T., Salih, B T, Komaranchath, A M, Almahmeed, W A R, Gerges, F., Farook, F S Mohamed, Albakshy, F., Mahmood, N., Wani, S., Freudenberger, R., Islam, N., Quinones, J., Sundlof, D., Beitler, C., Centolanza, L., Cornell, K., Huffaker, S., Matos, L., Marzo, K., Paruchuri, V., Patel, D., Abdullaev, T., Alyavi, B., Mirzarakhimova, S., Tsoy, I., Bekbulatova, R., and Uzokov, J.
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- 2023
130. Von Willebrand Factor Multimers during Transcatheter Aortic-Valve Replacement.
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Van Belle, E., Rauch, A., Vincent, F., Robin, E., Kibier, M., Labreuche, J., Jeanpierre, E., Levade, M., Hurt, C., Rousse, N., Dally, J.-B., Debry, N., Dallongeville, J., Vincentelli, A., Delhaye, C., Auffray, J.-L., Juthier, F., Schurtz, G., Lemesle, G., and Caspar, T.
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VON Willebrand factor , *AORTIC stenosis treatment , *AORTIC valve insufficiency , *POINT-of-care testing , *HEMOSTASIS - Abstract
Background: Postprocedural aortic regurgitation occurs in 10 to 20% of patients undergoing transcatheter aortic-valve replacement (TAVR) for aortic stenosis. We hypothesized that assessment of defects in high-molecular-weight (HMW) multimers of von Willebrand factor or point-of-care assessment of hemostasis could be used to monitor aortic regurgitation during TAVR.Methods: We enrolled 183 patients undergoing TAVR. Patients with aortic regurgitation after the initial implantation, as identified by means of transesophageal echocardiography, underwent additional balloon dilation to correct aortic regurgitation. HMW multimers and the closure time with adenosine diphosphate (CT-ADP), a point-of-care measure of hemostasis, were assessed at baseline and 5 minutes after each step of the procedure. Mortality was evaluated at 1 year. A second cohort (201 patients) was studied to validate the use of CT-ADP in order to identify patients with aortic regurgitation.Results: After the initial implantation, HMW multimers normalized in patients without aortic regurgitation (137 patients). Among the 46 patients with aortic regurgitation, normalization occurred in 20 patients in whom additional balloon dilation was successful but did not occur in the 26 patients with persistent aortic regurgitation. A similar sequence of changes was observed with CT-ADP. A CT-ADP value of more than 180 seconds had sensitivity, specificity, and negative predictive value of 92.3%, 92.4%, and 98.6%, respectively, for aortic regurgitation, with similar results in the validation cohort. Multivariable analyses showed that the values for HMW multimers and CT-ADP at the end of TAVR were each associated with mortality at 1 year.Conclusions: The presence of HMW-multimer defects and a high value for a point-of-care hemostatic test, the CT-ADP, were each predictive of the presence of aortic regurgitation after TAVR and were associated with higher mortality 1 year after the procedure. (Funded by Lille 2 University and others; ClinicalTrials.gov number, NCT02628509.). [ABSTRACT FROM AUTHOR]- Published
- 2016
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131. Shock-ignition relevant experiments with planar targets on OMEGA
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Schurtz, G. [Centre Lasers Intenses et Applications, CELIA, Université Bordeaux 1-CEA-CNRS, Talence (France)]
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- 2014
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132. Optimal conditions for shock ignition of scaled cryogenic deuterium-tritium targets
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Schurtz, G. [University of Bordeaux-CNRS-CEA, Centre Lasers Intenses et Applications, UMR 5107, 33405 Talence (France)]
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- 2013
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133. Gain curves and hydrodynamic modeling for shock ignition
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Schurtz, G [Centre Lasers Intenses et Applications, Universite Bordeaux 1-CNRS-CEA, 351 Cours de la Liberation, Talence 33405 (France)]
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- 2010
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134. A practical nonlocal model for heat transport in magnetized laser plasmas
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Schurtz, G [Centre Laser Intense et Applications (UMR 5107), CEA-CNRS-Universite Bordeaux 1, 33405 Talence cedex (France)]
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- 2006
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135. Candida albicans and Pseudomonas aeruginosa interactions: More than an opportunistic criminal association?
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Méar, J.-B., Kipnis, E., Faure, E., Dessein, R., Schurtz, G., Faure, K., and Guery, B.
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CANDIDA albicans , *PSEUDOMONAS aeruginosa infections , *PATHOGENIC microorganisms , *QUORUM sensing , *ANTI-infective agents , *MORPHOLOGY - Abstract
Abstract: Pseudomonas aeruginosa and Candida albicans are frequently coexisting opportunistic pathogens, responsible for colonization and infection in predisposed patients. They share a virulence specificity relying on auto-inducing, cell density-dependent molecules named quorum-sensing (QS). C. albicans virulence depends on its QS that influences morphological switch from yeast to filamentous form. Similarly, the production of P. aeruginosa virulence factors depends partly on QS molecules. Interactions have been investigated and demonstrated in vitro. P. aeruginosa may kill C. albicans either by producing toxins, such as pyocyanin, or by direct contact on its biofilm-dependent filamentous form. Cross-kingdom communication is a more subtle interaction: C. albicans can adapt its morphology in the presence of P. aeruginosa QS molecules, and inhibit P. aeruginosa QS-dependent virulence factor secretion, through farnesol, one of its QS molecule. But the in vivo relevance of these interactions is still controversial, as models of airway colonization/infection by C. albicans followed by subsequent P. aeruginosa pneumonia give contradictory results, suggesting the probable involvement of the immune system as a third party player. Finally, the authors of clinical studies performed in ventilated patients, indicate that C. albicans colonization could be a risk factor for P. aeruginosa pneumonia. The clinical outcome of C. albicans and P. aeruginosa interaction is uncertain, the virulence modulation demonstrated in these interactions opens new possibilities for future anti-infectious therapeutics. [Copyright &y& Elsevier]
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- 2013
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136. Formation of nanocavities in dielectrics: influence of equation of state.
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Hallo, L., Bourgeade, A., Mézel, C., Travaillé, G., Hébert, D., Chimier, B., Schurtz, G., and Tikhonchuk, V. T.
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DIELECTRICS , *LASER beams , *ULTRASHORT laser pulses , *EQUATIONS , *PULSED laser deposition , *PLASMA gases - Abstract
Tight focusing of a sub-picosecond laser pulse in a transparent dielectric provides a mean for localized deposition and plasma formation. A micro-explosion in a confined geometry results in a sub-micron cavity formation. Our numerical simulations show the cavity size is strongly dependent on the parameters of the equation of state such as the Grüneisen coefficient or the latent heat of sublimation. A comparison of numerical simulations with experimental data should allow a tuning of equations of state in the domain of extreme parameters [ABSTRACT FROM AUTHOR]
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- 2008
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137. Solid waste - RCRA, superfund, and mine waste study
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Schurtz, G
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- 1982
138. The HiPER project for inertial confinement fusion and some experimental results on advanced ignition schemes
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C. Fourment, Jaroslav Nejdl, Bedřich Rus, D. Neely, B. Vauzour, F. Perez, Laurent Gremillet, John Pasley, C. Spindloe, Jerzy Wolowski, S. D. Baton, S. Hulin, Michaela Kozlova, Petra Koester, Xavier Ribeyre, Dimitri Batani, M. Koenig, Kate Lancaster, Maria Richetta, Luca Volpe, J. J. Santos, Luca Antonelli, Alessio Morace, Philippe Nicolai, Wigen Nazarov, L. Labate, L. A. Gizzi, J. J. Honrubia, Guy Schurtz, Fabien Dorchies, M. Tolley, Jan Badziak, Batani, D, Koenig, M, Baton, S, Perez, F, Gizzi, L, Koester, P, Labate, L, Honrubia, J, Antonelli, L, Morace, A, Volpe, L, Santos, J, Schurtz, G, Hulin, S, Ribeyre, X, Fourment, C, Nicolai, P, Vauzour, B, Gremillet, L, Nazarov, W, Pasley, J, Richetta, M, Lancaster, K, Spindloe, C, Tolley, M, Neely, D, Kozlová, M, Nejdl, J, Rus, B, Wolowski, J, Badziak, J, Dorchies, F, Dipartimento di Fisica 'Giuseppe Occhialini' = Department of Physics 'Giuseppe Occhialini' [Milano-Bicocca], Università degli Studi di Milano-Bicocca [Milano] (UNIMIB), Laboratoire pour l'utilisation des lasers intenses (LULI), Université Pierre et Marie Curie - Paris 6 (UPMC)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Critical Care Department, Hospital de Sabadell, CIBER Enfermedades Respiratorias, Intense Laser Irradiation Laboratory–IPCF, Area della Ricerca CNR, Istituto Nazionale di Ottica (INO), Consiglio Nazionale delle Ricerche (CNR), Biomécanique et génie biomédical (BIM), Centre National de la Recherche Scientifique (CNRS), Centre d'Etudes Lasers Intenses et Applications (CELIA), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Bordeaux (UB), Pôle Fromager AOP du Massif Central, DAM Île-de-France (DAM/DIF), Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), University of St Andrews [Scotland], STFC Rutherford Appleton Laboratory (RAL), Science and Technology Facilities Council (STFC), Institute of Physics [Prague], Czech Academy of Sciences [Prague] (CAS), Institute of Physics (PALS), Department of X Ray Lasers, institute of physics PALS center, Università degli Studi di Milano-Bicocca = University of Milano-Bicocca (UNIMIB), National Research Council of Italy | Consiglio Nazionale delle Ricerche (CNR), and Université de Bordeaux (UB)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)
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Shock wave ,Nuclear engineering ,Laser ,Condensed Matter Physic ,fast ignition ,01 natural sciences ,7. Clean energy ,010305 fluids & plasmas ,law.invention ,Physics::Plasma Physics ,law ,0103 physical sciences ,HiPER ,010306 general physics ,Inertial confinement fusion ,ComputingMilieux_MISCELLANEOUS ,[PHYS]Physics [physics] ,Physics ,facility ,plasma physics ,Settore FIS/01 - Fisica Sperimentale ,Condensed Matter Physics ,Nuclear Energy and Engineering ,Nova (laser) ,Plasma ,Shock (mechanics) ,Ignition system ,Atomic physics ,Beam (structure) - Abstract
This paper presents the goals and some of the results of experiments conducted within the Working Package 10 (Fusion Experimental Programme) of the HiPER Project. These experiments concern the study of the physics connected to 'advanced ignition schemes', i.e. the fast ignition and the shock ignition approaches to inertial fusion. Such schemes are aimed at achieving a higher gain, as compared with the classical approach which is used in NIF, as required for future reactors, and make fusion possible with smaller facilities. In particular, a series of experiments related to fast ignition were performed at the RAL (UK) and LULI (France) Laboratories and studied the propagation of fast electrons (created by a short-pulse ultra-high-intensity beam) in compressed matter, created either by cylindrical implosions or by compression of planar targets by (planar) laser-driven shock waves. A more recent experiment was performed at PALS and investigated the laser-plasma coupling in the 10 16 W cm -2 intensity regime of interest for shock ignition. © 2011 IOP Publishing Ltd.
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- 2011
139. Experimental study of fast electron propagation in compressed matter
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F. Serres, R. Heathcote, C. Fourment, Marco Galimberti, Drew Higginson, V. Yahia, A. McPhee, P. Köster, Andrea Sgattoni, Wigen Nazarov, Kate Lancaster, B. Vauzour, J. J. Santos, Yongjoo Rhee, Carlo Benedetti, L. A. Gizzi, John Pasley, L. C. Jarrot, S. Hulin, Rafael Ramis, Xavier Ribeyre, Roberto Benocci, Guy Schurtz, Fabien Dorchies, Paul McKenna, C. Regan, S. Chawla, R. Jafer, J. J. Honrubia, F. N. Beg, Erik Brambrink, M. Coury, Hans-Peter Schlenvoigt, X. Vaisseau, F. Perez, L. Labate, A. J. Mackinnon, M. Koenig, Maria Richetta, Christopher Spindloe, Luca Volpe, Dimitri Batani, Ph. Nicolaï, S. D. Baton, International Institute of Clinical Studies, Centre d'Etudes Lasers Intenses et Applications (CELIA), Université de Bordeaux (UB)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS), Laboratoire des matériaux avancés (LMA), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Intense Laser Irradiation Laboratory–IPCF, Area della Ricerca CNR, Central Laser Facility (CLF), STFC Rutherford Appleton Laboratory (RAL), Science and Technology Facilities Council (STFC)-Science and Technology Facilities Council (STFC), Universidad Politécnica de Madrid (UPM), Pôle Fromager AOP du Massif Central, Dipartimento di Fisica 'Giuseppe Occhialini' = Department of Physics 'Giuseppe Occhialini' [Milano-Bicocca], Università degli Studi di Milano-Bicocca = University of Milano-Bicocca (UNIMIB), SUPA, Department of Physics (SUPA), University of Strathclyde [Glasgow], University of St Andrews [Scotland], Istituto Nazionale di Ottica (INO), National Research Council of Italy | Consiglio Nazionale delle Ricerche (CNR), Dipartimento di Energia [Milano], Politecnico di Milano [Milan] (POLIMI), Science and Technology Facilities Council (STFC), Laboratoire pour l'utilisation des lasers intenses (LULI), Université Pierre et Marie Curie - Paris 6 (UPMC)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), DAM Île-de-France (DAM/DIF), Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Critical Care Department, Hospital de Sabadell, CIBER Enfermedades Respiratorias, Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Bordeaux (UB), Università degli Studi di Milano-Bicocca [Milano] (UNIMIB), Consiglio Nazionale delle Ricerche (CNR), Vauzour, B, Santos, J, Batani, D, Baton, S, Koenig, M, Nicolaï, P, Perez, F, Beg, F, Benedetti, C, Benocci, R, Brambrink, E, Chawla, S, Coury, M, Dorchies, F, Fourment, C, Galimberti, G, Gizzi, L, Heathcote, R, Higginson, D, Honrubia, J, Hulin, S, Jafer, R, Jarrot, L, Labate, L, Lancaster, K, Köster, P, Mackinnon, A, Mckenna, P, Mcphee, A, Nazarov, W, Pasley, J, Ramis, R, Rhee, Y, Regan, C, Ribeyre, X, Richetta, M, Serres, F, Schlenvoigt, H, Schurtz, G, Sgattoni, A, Spindloe, C, Vaisseau, X, Volpe, L, and Yahia, V
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Nuclear and High Energy Physics ,proton radiography ,Proton ,Electron ,fast ignition ,01 natural sciences ,hydrodynamic simulations ,010305 fluids & plasmas ,x-ray radiography ,0103 physical sciences ,compression ,electron transport ,hydrodynamic simulations,Physics, Instrumentation, Nuclear and High Energy Physics ,Cylinder ,Area density ,010306 general physics ,Instrumentation ,ComputingMilieux_MISCELLANEOUS ,Physics ,[PHYS]Physics [physics] ,Range (particle radiation) ,Hydrodynamic simulation ,Settore FIS/01 - Fisica Sperimentale ,Plasma ,Cathode ray ,Atomic number ,Atomic physics - Abstract
We report on experimental results of the fast electron transport in compressed plasmas, created by laser-induced shock propagation in both cylindrical and planar geometry. Two experiments were carried out. The first one was based on the compression of a polyimide cylinder filled with foams of three different initial densities (rho(0)). X-ray and proton radiographies of the target during the compression coupled with hydrodynamic simulations show that the obtained core densities and temperatures range from 2 to 11 g/cm(3) and from 30 to 120 eV, respectively. By studying the K-shell fluorescence from dopant atoms inside the target and from tracer layers situated at both front and rear side of the target it has been possible to investigate the fast electron propagation. The results show that Cu K(alpha) yield emitted by the target rear side foil decreases with increasing compression, independently of rho(0). An electron collimation can also be observed for certain experimental conditions where a convergent resistivity gradient interacts with the fast electron beam. The second experiment was performed in a planar geometry with a compressing shock counter-propagative to the fast electron beam. In this case the areal density rho z seen by the electrons is constant during the compression in such a way that changes in the fast electron range should be ascribed to collective mechanisms. The study of the K(alpha) fluorescence, from buried fluorescent layers of different atomic numbers, shows that the electrons with energy
- Published
- 2010
140. Magnetic field measurements in laser-produced plasmas via proton deflectometry
- Author
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Cecchetti, C, Borghesi, M, Fuchs, J, Schurtz, G, Kar, S, MacChi, A, ROMANGNANI, L, Wilson, Puthenparampil, Antici, P, Jung, R, Osterholtz, J, PIPAHL, C, Willi, O, Schiavi, A, Notley, M, and Neely, D
- Published
- 2009
141. Laser-driven cylindrical compression of targets for fast electron transport study in warm and dense plasmas
- Author
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J. J. Santos, B. Vauzour, Andrea Sgattoni, Carlo Benedetti, D. Batani, R. Heathcote, C. Fourment, Wigen Nazarov, Drew Higginson, Marco Galimberti, R. Jafer, F. N. Beg, S. Hulin, Kate Lancaster, P. Köster, John Pasley, Guy Schurtz, Fabien Dorchies, C. Regan, Erik Brambrink, S. Chawla, Andrew MacPhee, F. Perez, Xavier Ribeyre, L. A. Gizzi, L. Labate, A. J. Mackinnon, Maria Richetta, Luca Volpe, Ph. Nicolaï, S. D. Baton, DAM Île-de-France (DAM/DIF), Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Critical Care Department, Hospital de Sabadell, CIBER Enfermedades Respiratorias, Dipartimento di Fisica 'Giuseppe Occhialini' = Department of Physics 'Giuseppe Occhialini' [Milano-Bicocca], Università degli Studi di Milano-Bicocca = University of Milano-Bicocca (UNIMIB), Laboratoire pour l'utilisation des lasers intenses (LULI), Université Pierre et Marie Curie - Paris 6 (UPMC)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), International Institute of Clinical Studies, Centre d'Etudes Lasers Intenses et Applications (CELIA), Université de Bordeaux (UB)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS), Laboratoire des matériaux avancés (LMA), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Intense Laser Irradiation Laboratory–IPCF, Area della Ricerca CNR, Central Laser Facility (CLF), STFC Rutherford Appleton Laboratory (RAL), Science and Technology Facilities Council (STFC)-Science and Technology Facilities Council (STFC), Pôle Fromager AOP du Massif Central, Istituto Nazionale di Ottica (INO), National Research Council of Italy | Consiglio Nazionale delle Ricerche (CNR), University of St Andrews [Scotland], Dipartimento di Energia [Milano], Politecnico di Milano [Milan] (POLIMI), Università degli Studi di Milano-Bicocca [Milano] (UNIMIB), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Bordeaux (UB), Consiglio Nazionale delle Ricerche (CNR), Vauzour, B, Pérez, F, Volpe, L, Lancaster, K, Nicola, P, Batani, D, Baton, S, Beg, F, Benedetti, C, Brambrink, E, Chawla, S, Dorchies, F, Fourment, C, Galimberti, G, Gizzi, L, Heathcote, R, Higginson, D, Hulin, S, Jafer, R, Kster, P, Labate, L, Mackinnon, A, Macphee, A, Nazarov, W, Pasley, J, Regan, C, Ribeyre, X, Richetta, M, Schurtz, G, Sgattoni, A, and Santos, J
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plasma density ,Plasma parameters ,ignition ,plasma diagnostics ,plasma light propagation ,plasma temperature ,plasma transport processes ,relativistic plasmas ,Context (language use) ,Electron ,01 natural sciences ,010305 fluids & plasmas ,law.invention ,law ,0103 physical sciences ,HiPER ,FAST IGNITION ,010306 general physics ,ComputingMilieux_MISCELLANEOUS ,[PHYS]Physics [physics] ,Physics ,Settore FIS/01 - Fisica Sperimentale ,Plasma ,Condensed Matter Physics ,Laser ,CRYSTALS ,Electron temperature ,Plasma diagnostics ,PENETRATION ,Atomic physics ,MATTER - Abstract
Fast ignition requires a precise knowledge of fast electron propagation in a dense hydrogen plasma. In this context, a dedicated HiPER (High Power laser Energy Research) experiment was performed on the VULCAN laser facility where the propagation of relativistic electron beams through cylindrically compressed plastic targets was studied. In this paper, we characterize the plasma parameters such as temperature and density during the compression of cylindrical polyimide shells filled with CH foams at three different initial densities. X-ray and proton radiography were used to measure the cylinder radius at different stages of the compression. By comparing both diagnostics results with 2D hydrodynamic simulations, we could infer densities from 2 to 11 g/cm(3) and temperatures from 30 to 120 eV at maximum compression at the center of targets. According to the initial foam density, kinetic, coupled (sometimes degenerated) plasmas were obtained. The temporal and spatial evolution of the resulting areal densities and electrical conductivities allow for testing electron transport in a wide range of configurations. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3578346]
- Published
- 2011
142. Ventilation strategies in cardiogenic shock: insights from the FRENSHOCK observational registry.
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Volle K, Merdji H, Bataille V, Lamblin N, Roubille F, Levy B, Champion S, Lim P, Schneider F, Labbe V, Khachab H, Bourenne J, Seronde MF, Schurtz G, Harbaoui B, Vanzetto G, Quentin C, Combaret N, Marchandot B, Lattuca B, Biendel C, Leurent G, Bonello L, Gerbaud E, Puymirat E, Bonnefoy E, Aissaoui N, and Delmas C
- Abstract
Background: Despite scarce data, invasive mechanical ventilation (MV) is widely suggested as first-line ventilatory support in cardiogenic shock (CS) patients. We assessed the real-life use of different ventilation strategies in CS and their influence on short and mid-term prognosis., Methods: FRENSHOCK was a prospective registry including 772 CS patients from 49 centers in France. Patients were categorized into three groups according to the ventilatory supports during hospitalization: no mechanical ventilation group (NV), non-invasive ventilation alone group (NIV), and invasive mechanical ventilation group (MV). We compared clinical characteristics, management, and occurrence of death and major adverse event (MAE) (death, heart transplantation or ventricular assist device) at 30 days and 1 year between the three groups., Results: Seven hundred sixty-eight patients were included in this analysis. Mean age was 66 years and 71% were men. Among them, 359 did not receive any ventilatory support (46.7%), 118 only NIV (15.4%), and 291 MV (37.9%). MV patients presented more severe CS with more skin mottling, higher lactate levels, and higher use of vasoactive drugs and mechanical circulatory support. MV was associated with higher mortality and MAE at 30 days (HR 1.41 [1.05-1.90] and 1.52 [1.16-1.99] vs NV). No difference in mortality (HR 0.79 [0.49-1.26]) or MAE (HR 0.83 [0.54-1.27]) was found between NIV patients and NV patients. Similar results were found at 1-year follow-up., Conclusions: Our study suggests that using NIV is safe in selected patients with less profound CS and no other MV indication. NCT02703038., (© 2024. The Author(s).)
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- 2024
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143. Tricuspid annular plane systolic excursion over systolic pulmonary artery pressure prognostic value for in-hospital adverse events in patients hospitalized for acute coronary syndrome.
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Fauvel C, Dillinger JG, Bouleti C, Trimaille A, Tron C, Chaussade AS, Thuaire C, Delmas C, Boccara A, Roule V, Millischer D, Thevenet E, Meune C, Stevenard M, Charbonnel C, Maitre Ballesteros L, Pommier T, El Ouahidi A, Swedsky F, Martinez D, Hauguel-Moreau M, Schurtz G, Coisne A, Dupasquier V, Bochaton T, Gerbaud E, Puymirat E, Henry P, and Pezel T
- Subjects
- Humans, Male, Female, Aged, Prognosis, Retrospective Studies, Middle Aged, Echocardiography methods, Tricuspid Valve diagnostic imaging, Tricuspid Valve physiopathology, Hospital Mortality, Prospective Studies, France, Hospitalization, Risk Assessment, ROC Curve, Acute Coronary Syndrome diagnostic imaging, Acute Coronary Syndrome physiopathology, Pulmonary Artery diagnostic imaging, Pulmonary Artery physiopathology, Systole
- Abstract
Aims: Although several studies have shown that the right ventricular to pulmonary artery (RV-PA) coupling, assessed by the ratio between tricuspid annular plane systolic excursion and systolic pulmonary artery pressure (TAPSE/sPAP) using echocardiography, is strongly associated with cardiovascular events, its prognostic value is not established in acute coronary syndrome (ACS). We aimed to assess the in-hospital prognostic value of TAPSE/sPAP among patients hospitalized for ACS in a retrospective analysis from the prospective ADDICT-ICCU study., Methods and Results: A total of 481 consecutive patients hospitalized in intensive cardiac care unit [mean age 65 ± 13 years, 73% of male, 46% ST-elevation myocardial infarction (STEMI)] for ACS [either STEMI or non-STEMI (NSTEMI)] with TAPSE/sPAP available were included in this prospective French multicentric study (39 centres). The primary outcome was in-hospital major adverse cardiovascular events (MACEs) defined as all-cause death, resuscitated cardiac arrest, or cardiogenic shock and occurred in 33 (7%) patients. Receiver operating characteristic curve analysis identified 0.55 mm/mmHg as the best TAPSE/sPAP cut-off to predict in-hospital MACEs. TAPSE/sPAP <0.55 was associated with in-hospital MACEs, even after adjustment with comorbidities [odds ratio (OR): 19.1, 95% confidence interval (CI) 7.78-54.8], clinical severity including left ventricular ejection fraction (OR: 14.4, 95% CI 5.70-41.7), and propensity-matched population analysis (OR: 22.8, 95% CI 7.83-97.2, all P < 0.001). After adjustment, TAPSE/sPAP <0.55 showed the best improvement in model discrimination and reclassification above traditional prognosticators (C-statistic improvement: 0.16; global χ2 improvement: 52.8; likelihood ratio test P < 0.001) with similar results for both STEMI and NSTEMI subgroups., Conclusion: A low RV-PA coupling defined as TAPSE/sPAP ratio <0.55 was independently associated with in-hospital MACEs and provided incremental prognostic value over traditional prognosticators in patients hospitalized for ACS., Trial Registration: ClinicalTrials.gov Identifier: NCT05063097., Competing Interests: Conflict of interest: None declared., (© The Author(s) 2024. Published by Oxford University Press on behalf of the European Society of Cardiology. All rights reserved. For commercial re-use, please contact reprints@oup.com for reprints and translation rights for reprints. All other permissions can be obtained through our RightsLink service via the Permissions link on the article page on our site—for further information please contact journals.permissions@oup.com.)
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- 2024
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144. Cardiogenic shock and infection: A lethal combination.
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Cherbi M, Merdji H, Labbé V, Bonnefoy E, Lamblin N, Roubille F, Levy B, Lim P, Khachab H, Schurtz G, Harbaoui B, Vanzetto G, Combaret N, Marchandot B, Lattuca B, Biendel-Picquet C, Leurent G, Gerbaud E, Puymirat E, Bonello L, and Delmas C
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- Humans, Male, Female, Middle Aged, Aged, Risk Factors, Time Factors, Prospective Studies, Sepsis mortality, Sepsis diagnosis, Sepsis therapy, Sepsis complications, Treatment Outcome, Heart Transplantation mortality, Heart-Assist Devices, Cause of Death, Hemodynamics, Risk Assessment, Shock, Cardiogenic mortality, Shock, Cardiogenic diagnosis, Shock, Cardiogenic therapy, Shock, Cardiogenic physiopathology, Shock, Cardiogenic etiology, Registries
- Abstract
Background: Cardiogenic shock and sepsis are severe haemodynamic states that are frequently present concomitantly, leading to substantial mortality. Despite its frequency and clinical significance, there is a striking lack of literature on the outcomes of combined sepsis and cardiogenic shock., Methods: FRENSHOCK was a prospective registry including 772 patients with cardiogenic shock from 49 centres. The primary endpoint was 1-month all-cause mortality. Secondary endpoints included heart transplantation, ventricular assistance device and all-cause death rate at 1year., Results: Among the 772 patients with cardiogenic shock included, 92 cases were triggered by sepsis (11.9%), displaying more frequent renal and hepatic acute injuries, with lower mean arterial pressure. Patients in the sepsis group required broader use of dobutamine (90.1% vs. 81.2%; P=0.16), norepinephrine (72.5% vs. 50.8%; P<0.01), renal replacement therapy (29.7% vs. 14%; P<0.01), non-invasive ventilation (36.3% vs. 24.4%; P=0.09) and invasive ventilation (52.7% vs. 35.9%; P=0.02). Sepsis-triggered cardiogenic shock resulted in higher 1-month (41.3% vs. 24.0%; adjusted hazard ratio: 1.94, 95% confidence interval: 1.36-2.76; P<0.01) and 1-year (62.0% vs. 42.9%; adjusted hazard ratio 1.75, 95% confidence interval 1.32-2.33; P<0.01) all-cause death rates. No significant difference was found at 1year for heart transplantation or ventricular assistance device (8.7% vs. 10.3%; adjusted odds ratio 0.72, 95% confidence interval 0.32-1.64; P=0.43). In patients with sepsis-triggered cardiogenic shock, neither the presence of a preexisting cardiomyopathy nor the co-occurrence of other cardiogenic shock triggers had any additional impact on death., Conclusions: The association between sepsis and cardiogenic shock represents a common high-risk scenario, leading to higher short- and long-term death rates, regardless of the association with other cardiogenic shock triggers or the presence of preexisting cardiomyopathy., (Copyright © 2024. Published by Elsevier Masson SAS.)
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- 2024
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145. Sex disparities in cardiogenic shock: Insights from the FRENSHOCK registry.
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Manzo-Silberman S, Martin AC, Boissier F, Hauw-Berlemont C, Aissaoui N, Lamblin N, Roubille F, Bonnefoy E, Bonello L, Elbaz M, Schurtz G, Morel O, Leurent G, Levy B, Jouve B, Harbaoui B, Vanzetto G, Combaret N, Lattucca B, Champion S, Lim P, Bruel C, Schneider F, Seronde MF, Bataille V, Gerbaud E, Puymirat E, and Delmas C
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- Humans, Female, Male, Aged, Sex Factors, France epidemiology, Middle Aged, Intensive Care Units statistics & numerical data, Prognosis, Shock, Cardiogenic therapy, Shock, Cardiogenic mortality, Shock, Cardiogenic epidemiology, Registries
- Abstract
Background: Cardiogenic shock (CS) is the most severe form of acute heart failure. Discrepancies have been reported between sexes regarding delays, pathways and invasive strategies in CS complicating acute myocardial infarction. However, effect of sex on the prognosis of unselected CS remains controversial., Objectives: The aim was to analyze the impact of sex on aetiology, management and prognosis of CS., Methods: The FRENSHOCK registry included all CS admitted in 49 French Intensive Care Units (ICU) and Intensive Cardiac Care Units (ICCU) between April and October 2016., Results: Among the 772 CS patients included, 220 were women (28.5%). Women were older, less smokers, with less history of ischemic cardiac disease (20.5% vs 33.6%) than men. At admission, women presented less cardiac arrest (5.5 vs 12.2%), less mottling (32.5 vs 41.4%) and higher LVEF (30 ± 14 vs 25 ± 13%). Women were more often managed via emergency department while men were directly admitted at ICU/ICCU. Ischemia was the most frequent trigger irrespective of sex (36.4% in women vs 38.2%) but women had less coronary angiogram and PCI (45.9% vs 54% and 24.1 vs 31.3%, respectively). We found no major difference in medication and organ support. Thirty-day mortality (26.4 vs 26.5%), transplant or permanent assist device were similar in both sexes., Conclusion: Despite some more favorable parameters in initial presentation and no significant difference in medication and support, women shared similar poor prognosis than men. Further analysis is required to cover the lasting gap in knowledge regarding sex specificities to distinguish between differences and inequalities. NCT02703038., Competing Interests: Declaration of competing interest Manzo-Silberman S has received consulting fees from Bayer, Organon, Exeltis, lecture fees from Bayer, BMS, Exeltis and Organon, has served in the adjudication board for a study for Biotronik. Martin AC has received consulting fees from Alliance BMS-Pfizer, Bayer, grants from Alliance BMS-Pfizer, lecture fees from Alliance BMS-Pfizer, Abbott, Bayer, Novartis. Boissier.F has received travel and accomodation fees from AOP Orphan. Leurent.G reports proctoring activity, lecture and consultant fees from Abbott. Combaret N has received lecture fees from Pfizer and Medtronic. Gerbaud E has received consulting fees from Terumo, Abbott and Vifor phama. Delmas C has received consulting fees from Abiomed, Abbott and Moderna; lecture fees from Abiomed, Abott, Astrazeneca, Bayer, Orion and Servier. All the other authors have nothing to disclaimed., (Copyright © 2024 The Authors. Published by Elsevier Inc. All rights reserved.)
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- 2024
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146. In-hospital prognostic value of TAPSE/sPAP in patients hospitalized for acute heart failure.
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Fauvel C, Dillinger JG, Rossanaly Vasram R, Bouleti C, Logeart D, Roubille F, Meune C, Ohlmann P, Bonnefoy-Coudraz E, Albert F, Attou S, Boukhris M, Pommier T, Merat B, Noirclerc N, Bouali N, Aghezzaf S, Schurtz G, Mansencal N, Andrieu S, Henry P, and Pezel T
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- Humans, Male, Female, Aged, Prognosis, Prospective Studies, Acute Disease, Middle Aged, Hospital Mortality, Hospitalization, France, Echocardiography methods, Tricuspid Valve diagnostic imaging, Risk Assessment, ROC Curve, Pulmonary Artery diagnostic imaging, Pulmonary Artery physiopathology, Cohort Studies, Aged, 80 and over, Heart Failure diagnostic imaging, Heart Failure mortality
- Abstract
Aims: Tricuspid annular plane systolic excursion over systolic pulmonary artery pressure (TAPSE/sPAP) assessed by echocardiography appears to be a good non-invasive approach for right ventricular to pulmonary artery coupling assessment. We aimed to assess the in-hospital prognostic value of TAPSE/sPAP among patients hospitalized for acute heart failure (AHF)., Methods and Results: In total, 333 consecutive patients (mean age 68 ± 14 years, 70% of male, mean left ventricular ejection fraction 44 ± 16%) were hospitalized for AHF across 39 French cardiology departments, with TAPSE/sPAP measured by echocardiography within the first 24 h of hospitalization were included in this prospective study. The primary outcome was in-hospital major adverse cardiovascular events (MACEs) defined as all-cause death, resuscitated cardiac arrest or cardiogenic shock and occurred in 50 (15%) patients. Using receiver operating characteristic curve analysis, the best TAPSE/sPAP threshold for in-hospital MACEs was 0.40 mm/mmHg. TAPSE/sPAP < 0.40 mm/mmHg was independently associated with in-hospital MACEs, even after adjustment with comorbidities [odds ratio (OR): 3.75, 95% CI (1.87-7.93), P < 0.001], clinical severity [OR: 2.80, 95% CI (1.36-5.95), P = 0.006]. Using a 1:1 propensity-matched population, TAPSE/sPAP ratio < 0.40 was associated with a higher rate of in-hospital MACEs [OR: 2.98, 95% CI (1.53-6.12), P = 0.002]. After adjustment, TAPSE/sPAP < 0.40 showed the best improvement in model discrimination and reclassification above traditional prognostic factors (C-statistic improvement: 0.05; χ2 improvement: 14.4; likelihood-ratio test P < 0.001). These results were consistent in an external validation cohort of 133 patients., Conclusion: TAPSE/sPAP < 0.40 mm/mmHg assessed by an early echocardiography during an AHF episode is independently associated with in-hospital MACEs suggesting enhanced close monitoring and strengthened heart failure-specific care in these patients., Trial Registration: ClinicalTrials.gov Identifier: NCT05063097., Competing Interests: Conflict of interest: None declared., (© The Author(s) 2024. Published by Oxford University Press on behalf of the European Society of Cardiology. All rights reserved. For commercial re-use, please contact reprints@oup.com for reprints and translation rights for reprints. All other permissions can be obtained through our RightsLink service via the Permissions link on the article page on our site—for further information please contact journals.permissions@oup.com.)
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- 2024
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147. The admission level of CRP during cardiogenic shock is a strong independent risk marker of mortality.
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Roubille F, Cherbi M, Kalmanovich E, Delbaere Q, Bonnefoy-Cudraz E, Puymirat E, Schurtz G, Gerbaud E, Bonello L, Lim P, Leurent G, Roubille C, and Delmas C
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- Humans, Male, Female, Aged, Middle Aged, Risk Factors, Prospective Studies, Aged, 80 and over, Prognosis, Registries, Patient Admission, Shock, Cardiogenic mortality, Shock, Cardiogenic blood, C-Reactive Protein metabolism, C-Reactive Protein analysis, Biomarkers blood
- Abstract
Inflammatory processes are involved not only in coronary artery disease but also in heart failure (HF). Cardiogenic shock (CS) and septic shock are classically distinct although intricate relationships are frequent in daily practice. The impact of admission inflammation in patients with CS is largely unknown. FRENSHOCK is a prospective registry including 772 CS patients from 49 centers. One-month and one-year mortalities were analyzed according to the level of C-reactive protein (CRP) at admission, adjusted on independent predictive factors. Within 406 patients included, 72.7% were male, and the mean age was 67.4 y ± 14.7. Four groups were defined, depending on the quartiles of CRP at admission. Q1 with a CRP < 8 mg/L, Q2: CRP was 8-28 mg/L, Q3: CRP was > 28-69 mg/L, and Q4: CRP was > 69 mg/L. The four groups did not differ regarding main baseline characteristics. However, group Q4 received more often antibiotics in 47.5%, norepinephrine in 66.3%, and needed more frequently respiratory support and renal replacement therapy. Whether at 1 month (P
trend = 0.01) or 1 year (Ptrend < 0.01), a strong significant trend towards increased all-cause mortality was observed across CRP quartiles. Specifically, compared to the Q1 group, Q4 patients demonstrated a 2.2-fold higher mortality rate at 1-month (95% CI 1.23-3.97, p < 0.01), which persisted at 1-year, with a 2.14-fold increase in events (95% CI 1.43-3.22, p < 0.01). Admission CRP level is a strong independent predictor of mortality at 1 month and 1-year in CS. Specific approaches need to be developed to identify accurately patients in whom inflammatory processes are excessive and harmful, paving the way for innovative approaches in patients admitted for CS.NCT02703038., (© 2024. The Author(s).)- Published
- 2024
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148. Phenotypic clustering of patients hospitalized in intensive cardiac care units: Insights from the ADDICT-ICCU study.
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Hamzi K, Gall E, Roubille F, Trimaille A, Elbaz M, El Ouahidi A, Noirclerc N, Fard D, Lattuca B, Fauvel C, Goralski M, Alvain S, Chaib A, Piliero N, Schurtz G, Pommier T, Bouleti C, Tron C, Bonnet G, Nhan P, Auvray S, Léquipar A, Dillinger JG, Vicaut E, Henry P, Toupin S, and Pezel T
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- Humans, Male, Female, Middle Aged, Aged, Risk Factors, Cluster Analysis, Risk Assessment, Hospital Mortality, Non-ST Elevated Myocardial Infarction therapy, Non-ST Elevated Myocardial Infarction physiopathology, Non-ST Elevated Myocardial Infarction mortality, Non-ST Elevated Myocardial Infarction diagnostic imaging, Non-ST Elevated Myocardial Infarction diagnosis, Prognosis, Time Factors, Shock, Cardiogenic physiopathology, Shock, Cardiogenic therapy, Shock, Cardiogenic mortality, Shock, Cardiogenic diagnosis, Prospective Studies, Heart Arrest therapy, Heart Arrest physiopathology, Heart Arrest diagnosis, Heart Arrest mortality, ST Elevation Myocardial Infarction therapy, ST Elevation Myocardial Infarction physiopathology, ST Elevation Myocardial Infarction diagnosis, ST Elevation Myocardial Infarction mortality, Aged, 80 and over, Heart Failure physiopathology, Heart Failure therapy, Heart Failure diagnosis, Heart Failure mortality, Coronary Care Units, Phenotype
- Abstract
Background: Intensive cardiac care units (ICCUs) were created to manage ventricular arrhythmias after acute coronary syndromes, but have diversified to include a more heterogeneous population, the characteristics of which are not well depicted by conventional methods., Aims: To identify ICCU patient subgroups by phenotypic unsupervised clustering integrating clinical, biological, and echocardiographic data to reveal pathophysiological differences., Methods: During 7-22 April 2021, we recruited all consecutive patients admitted to ICCUs in 39 centers. The primary outcome was in-hospital major adverse events (MAEs; death, resuscitated cardiac arrest or cardiogenic shock). A cluster analysis was performed using a Kamila algorithm., Results: Of 1499 patients admitted to the ICCU (69.6% male, mean age 63.3±14.9 years), 67 (4.5%) experienced MAEs. Four phenogroups were identified: PG1 (n=535), typically patients with non-ST-segment elevation myocardial infarction; PG2 (n=444), younger smokers with ST-segment elevation myocardial infarction; PG3 (n=273), elderly patients with heart failure with preserved ejection fraction and conduction disturbances; PG4 (n=247), patients with acute heart failure with reduced ejection fraction. Compared to PG1, multivariable analysis revealed a higher risk of MAEs in PG2 (odds ratio [OR] 3.13, 95% confidence interval [CI] 1.16-10.0) and PG3 (OR 3.16, 95% CI 1.02-10.8), with the highest risk in PG4 (OR 20.5, 95% CI 8.7-60.8) (all P<0.05)., Conclusions: Cluster analysis of clinical, biological, and echocardiographic variables identified four phenogroups of patients admitted to the ICCU that were associated with distinct prognostic profiles., Trial Registration: ClinicalTrials.gov identifier: NCT05063097., (Copyright © 2024 Elsevier Masson SAS. All rights reserved.)
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- 2024
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149. Comparison of Incidence and Prognostic Impact of Ischemic, Major Bleeding and Heart Failure Events in Patients With Chronic Coronary Syndrome: Insights From the CORONOR Registry.
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Lemesle G, Lamblin N, Schurtz G, Labreuche J, Duhamel A, Verdier B, Steg PG, and Bauters C
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- Humans, Male, Female, Aged, Incidence, Middle Aged, Prospective Studies, Prognosis, Chronic Disease, Hospitalization, Myocardial Infarction epidemiology, Myocardial Infarction mortality, Myocardial Infarction diagnosis, Risk Factors, Follow-Up Studies, Heart Failure epidemiology, Heart Failure mortality, Registries, Hemorrhage epidemiology, Hemorrhage mortality
- Abstract
Background: Evaluation of the residual risk in patient with chronic coronary syndrome is challenging in daily practice. Several types of events (myocardial infarction, ischemic stroke, bleeding, and heart failure [HF]) may occur, and their impact on subsequent mortality is unclear in the era of modern evidence-based pharmacotherapy., Methods: CORONOR (Suivi d'une cohorte de patients Coronariens stables en région Nord-pas-de-Calais) is a prospective multicenter cohort that enrolled 4184 consecutive unselected outpatients with chronic coronary syndrome. We analyzed the incidence, correlates, and impact of ischemic events (a composite of myocardial infarction and ischemic stroke), major bleeding (Bleeding Academic Research Consortium 3 or higher), and hospitalization for HF on subsequent patient mortality., Results: During follow-up (median, 4.9 years), 677 patients (16.5%) died. The 5-year cumulative incidences (death as competing event) of ischemic events, major bleeding, and HF hospitalization were 6.3% (5.6%-7.1%), 3.1% (2.5%-3.6%), and 8.1% (7.3%-9%), respectively. Ischemic events, major bleeding, and HF hospitalization were each associated with all-cause mortality. Major bleeding and hospitalization for HF were associated with the highest mortality rates in the postevent period (42.4%/y and 34.7%/y, respectively) compared with incident ischemic events (13.1%/y). The age- and sex-adjusted hazard ratios for all-cause mortality were 3.57 (95% CI, 2.77-4.61), 9.88 (95% CI, 7.55-12.93), and 8.60 (95% CI, 7.15-10.35) for ischemic events, major bleeding, and hospitalization for HF, respectively (all P <0.001)., Conclusions: Hospitalization for HF has become both the most frequent and one of the most ominous events among patients with chronic coronary syndrome. Although less frequent, major bleeding is strongly associated with worse patient survival. Secondary prevention should not be limited to preventing ischemic events. Minimizing bleeding and preventing HF may be at least as important., Competing Interests: Disclosures None.
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- 2024
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150. Management and outcomes of pregnant women with cardiovascular diseases in a cardio-obstetric team.
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Richardson M, Bonnet JP, Coulon C, Domanski O, Constans B, Estevez MG, Gautier S, Marsili L, Hamoud YO, Coisne A, Ridon H, Polge AS, Mouton S, Haddad Y, Juthier F, Moussa M, Vehier CM, Lemesle G, Schurtz G, Garabedian C, Jourdain M, Ninni S, Brigadeau F, Montaigne D, Lamblin N, and Ghesquiere L
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- Humans, Female, Pregnancy, Adult, Risk Factors, Time Factors, Treatment Outcome, Delivery of Health Care, Integrated, Risk Assessment, Retrospective Studies, Cardiovascular Diseases epidemiology, Cardiovascular Diseases diagnosis, Cardiovascular Diseases therapy, Cardiovascular Diseases mortality, Young Adult, Pregnancy Complications, Cardiovascular epidemiology, Pregnancy Complications, Cardiovascular therapy, Pregnancy Complications, Cardiovascular diagnosis, Pregnancy Complications, Cardiovascular mortality, Pregnancy Complications, Cardiovascular physiopathology, Patient Care Team
- Abstract
Background: Cardiovascular diseases (CVDs) are currently the leading cause of maternal death in Western countries. Although multidisciplinary cardio-obstetric teams are recommended to improve the management of pregnant women with CVD, data supporting this approach are scarce., Aims: To describe the characteristics and outcomes of pregnant patients with CVD managed within the cardio-obstetric programme of a tertiary centre., Methods: We included every pregnant patient with history of CVD managed by our cardio-obstetric team between June 2017 and December 2019, and collected all major cardiovascular events (death, heart failure, acute coronary syndromes, stroke, endocarditis and aortic dissection) that occurred during pregnancy, peripartum and the following year., Results: We included 209 consecutive pregnancies in 202 patients. CVDs were predominantly valvular heart diseases (37.8%), rhythm disorders (26.8%), and adult congenital heart diseases (22.5%). Altogether, 47.4% were classified modified World Health Organization (mWHO)>II, 66.5% had CARdiac disease in PREGnancy score (CARPREG II)≥2 and 80 pregnancies (38.3%) were delivered by caesarean section. Major cardiovascular events occurred in 16 pregnancies (7.7%, 95% confidence interval [CI] 4.5-12.2) during pregnancy and in three others (1.5%, 95% CI 0.3-4.1) during 1-year follow-up. Most events (63.1%) occurred in the 16.3% of patients with unknown CVD before pregnancy., Conclusions: The management of pregnant patients with CVD within a cardio-obstetric team seems encouraging as we found a relatively low rate of cardiovascular events compared to the high-risk profile of our population. However, most of the remaining events occurred in patients without cardiac monitoring before pregnancy., (Copyright © 2024 Elsevier Masson SAS. All rights reserved.)
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- 2024
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