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Hashimoto T, Ajimura S, Beer G, Bhang H, Bragadireanu M, Buehler P, Busso L, Cargnelli M, Choi S, Curceanu C, Enomoto S, Faso D, Fujioka H, Fujiwara Y, Fukuda T, Guaraldo C, Hayano RS, Hiraiwa T, Iio M, Iliescu M, Inoue K, Ishiguro Y, Ishikawa T, Ishimoto S, Ishiwatari T, Itahashi K, Iwai M, Iwasaki M, Kato Y, Kawasaki S, Kienle P, Kou H, Ma Y, Marton J, Matsuda Y, Mizoi Y, Morra O, Nagae T, Noumi H, Ohnishi H, Okada S, Outa H, Piscicchia K, Poli Lener M, Romero Vida A, Sada Y, Sakaguchi A, Sakuma F, Sato M, Scordo A, Sekimoto M, Shi H, Sirghi D, Sirghi F, Suzuki K, Suzuki S, Suzuki T, Tanida K, Tatsuno H, Tokuda M, Tomono D, Toyoda A, Tsukada K, Vazquez Doce O, Widmann E, Wuenschek BK, Yamaga T, Yamazaki T, Yim H, Zhang Q, Zmeska J. A search for the K−ppbound state in the 3He( K−in-flight, n) reaction at J-PARC. EPJ WEB OF CONFERENCES 2014. [DOI: 10.1051/epjconf/20146609008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Ishiwatari T, Bazzi M, Beer G, Berucci C, Bombelli L, Bragadireanu A, Cargnelli M, Curceanu C, d’Uffizi A, Fiorini C, Ghio F, Guaraldo C, Hayano R, Iliescu M, Iwasaki M, Kienle P, Levi Sandri P, Longoni A, Marton J, Okada S, Pietreanu D, Ponta T, Quaglia R, Romero Vidal A, Sbardella E, Scordo A, Shi H, Sirghi D, Sirghi F, Tatsuno H, Tudorache A, Tudorache V, Vazquez Doce O, Wünschek B, Widmann E, Zmeskal J. New precision era of experiments on strong interaction with strangeness at DAFNE/LNF-INFN. EPJ WEB OF CONFERENCES 2014. [DOI: 10.1051/epjconf/20146605016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Sada Y, Ajimura S, Beer G, Bhang H, Bragadireanu M, Buehler P, Busso L, Cargnelli M, Choi S, Curceanu C, Enomoto S, Faso D, Fujioka H, Fujiwara Y, Fukuda T, Guaraldo C, Hashimoto T, Hayano RS, Hiraiwa T, Iio M, Iliescu M, Inoue K, Ishiguro Y, Ishikawa T, Ishimoto S, Ishiwatari T, Itahashi K, Iwai M, Iwasaki M, Kato Y, Kawasaki S, Kienle P, Kou H, Ma Y, Marton J, Matsuda Y, Mizoi Y, Morra O, Nagae T, Noumi H, Ohnishi H, Okada S, Outa H, Piscicchia K, Poli Lener M, Romero Vidal A, Sakaguchi A, Sakuma F, Sato M, Scordo A, Sekimoto M, Shi H, Sirghi D, Sirghi F, Suzuki K, Suzuki S, Suzuki T, Tanida K, Tatsuno H, Tokuda M, Tomono D, Toyoda A, Tsukada K, Vazquez Doce O, Widmann E, Weunschek BK, Yamaga T, Yamazaki T, Yim H, Zhang Q, Zmeskal J. Search for the K−ppbound state via the in-flight 3He( K−, n) reaction. EPJ WEB OF CONFERENCES 2014. [DOI: 10.1051/epjconf/20148102016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Cargnelli M, Bazzi M, Beer G, Berucci C, Bragadireanu A, Curceanu C, d'Uffizi A, Fiorini C, Ghio F, Guaraldo C, Hayano R, Iliescu M, Ishiwatari T, Iwasaki M, Levi Sandri P, Marton J, Okada S, Pietreanu D, Ponta T, Quaglia R, Romero Vidal A, Sbardella E, Scordo A, Shi H, Sirghi D, Sirghi F, Tatsuno H, Vazquez Doce O, Widmann E, Wünschek B, Zmeskal J. X-ray spectroscopy of kaonic atoms at SIDDHARTA. EPJ WEB OF CONFERENCES 2014. [DOI: 10.1051/epjconf/20147305008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Shi H, Bazzi M, Beer G, Berucci C, Bragadireanu A, Cargnelli M, Curceanu C, d’Uffizi A, Fiorini C, Ghio F, Guaraldo C, Hayano R, Iliescu M, Ishiwatari T, Iwasaki M, Kienle P, Levi Sandri P, Marton J, Okada S, Pietreanu D, Piscicchia K, Ponta T, Quaglia R, Romero Vidal A, Sbardella E, Scordo A, Sirghi D, Sirghi F, Tatsuno H, Vazquez Doce O, Widmann E, Zmeskal J. The yield of kaonic hydrogen X-rays in the SIDDHARTA experiment. EPJ WEB OF CONFERENCES 2014. [DOI: 10.1051/epjconf/20146609016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Marton J, Bazzi M, Beer G, Berucci C, Bragadireanu A, Cargnelli M, Curceanu C, d’Uffizi A, Fiorini C, Ghio F, Guaraldo C, Hayano R, Iliescu M, Ishiwatari T, Iwasaki M, Levi Sandri P, Okada S, Pietreanu D, Ponta T, Quaglia R, Romero Vidal A, Sbardella E, Scordo A, Shi H, Sirghi D, Sirghi F, Tatsuno H, Vazquez Doce O, Widmann E, Wünschek B, Zmeskal J. Kaonic atoms – studies of the strong interaction with strangeness. EPJ WEB OF CONFERENCES 2014. [DOI: 10.1051/epjconf/20148101017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Curceanu C, Bazzi M, Beer G, Berucci C, Bosnar D, Bragadireanu A, Cargnelli M, Clozza A, D’Uffizi A, Fabbietti L, Fiorini C, Ghio F, Guaraldo C, Hayano R, Iliescu M, Ishiwatari T, Iwasaki M, Levi Sandri P, Marton J, Okada S, Pietreanu D, Piscicchia K, Poli Lener M, Ponta T, Quaglia R, Romero Vidal A, Sbardella E, Scordo A, Shi H, Sirghi D, Sirghi F, Tatsuno H, Tucaković I, Vazquez Doce O, Widmann E, Zmeskal J. Unveiling the strangeness secrets: low-energy kaon-nucleon/nuclei interactions studies at DAΦNE. EPJ WEB OF CONFERENCES 2014. [DOI: 10.1051/epjconf/20146609004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Ishiwatari T, Bazzi M, Beer G, Bombelli L, Bragadireanu AM, Cargnelli M, Curceanu Petrascu C, Dʼuffizi A, Fiorini C, Frizzi T, Ghio F, Guaraldo C, Hayano RS, Iliescu M, Iwasaki M, Kienle P, Levi Sandri P, Longoni A, Marton J, Okada S, Pietreanu D, Ponta T, Rizzo A, Romero Vidal A, Sbardella E, Scordo A, Shi H, Sirghi DL, Sirghi F, Tatsuno H, Tudorache A, Tudorache V, Vazquez Doce O, Widmann E, Wünschek B, Zmeskal J. Strong-interaction shifts and widths of kaonic helium isotopes. NUCLEAR PHYSICS. A 2013; 914:305-309. [PMID: 24068854 PMCID: PMC3778894 DOI: 10.1016/j.nuclphysa.2012.12.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2012] [Revised: 11/27/2012] [Accepted: 12/07/2012] [Indexed: 06/02/2023]
Abstract
The kaonic 3He and 4He [Formula: see text] transitions in gaseous targets were observed by the SIDDHARTA experiment. The X-ray energies of these transitions were measured with large-area silicon-drift detectors using the timing information of the [Formula: see text] pairs produced by the DAΦNE [Formula: see text] collider. The strong-interaction shifts and widths both of the kaonic 3He and 4He 2p states were determined, which are much smaller than the results obtained by the previous experiments. The "kaonic helium puzzle" (a discrepancy between theory and experiment) was now resolved.
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Bazzi M, Beer G, Berucci C, Bombelli L, Bragadireanu A, Cargnelli M, Curceanu (Petrascu) C, dʼUffizi A, Fiorini C, Frizzi T, Ghio F, Guaraldo C, Hayano R, Iliescu M, Ishiwatari T, Iwasaki M, Kienle P, Levi Sandri P, Longoni A, Marton J, Okada S, Pietreanu D, Ponta T, Romero Vidal A, Sbardella E, Scordo A, Shi H, Sirghi D, Sirghi F, Tatsuno H, Tudorache A, Tudorache V, Vazquez Doce O, Widmann E, Zmeskal J. Preliminary study of kaonic deuterium X-rays by the SIDDHARTA experiment at DAΦNE. NUCLEAR PHYSICS. A 2013; 907:69-77. [PMID: 23805024 PMCID: PMC3688359 DOI: 10.1016/j.nuclphysa.2013.03.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2013] [Revised: 02/27/2013] [Accepted: 03/01/2013] [Indexed: 05/28/2023]
Abstract
The study of the [Formula: see text] system at very low energies plays a key role for the understanding of the strong interaction between hadrons in the strangeness sector. At the DAΦNE electron-positron collider of Laboratori Nazionali di Frascati we studied kaonic atoms with [Formula: see text] and [Formula: see text], taking advantage of the low-energy charged kaons from Φ-mesons decaying nearly at rest. The SIDDHARTA experiment used X-ray spectroscopy of the kaonic atoms to determine the transition yields and the strong interaction induced shift and width of the lowest experimentally accessible level (1s for H and D and 2p for He). Shift and width are connected to the real and imaginary part of the scattering length. To disentangle the isospin dependent scattering lengths of the antikaon-nucleon interaction, measurements of [Formula: see text] and of [Formula: see text] are needed. We report here on an exploratory deuterium measurement, from which a limit for the yield of the K-series transitions was derived: [Formula: see text] and [Formula: see text] (CL 90%). Also, the upcoming SIDDHARTA-2 kaonic deuterium experiment is introduced.
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Rojek J, Karlis G, Malinowski L, Beer G. Setting up virgin stress conditions in discrete element models. COMPUTERS AND GEOTECHNICS 2013; 48:228-248. [PMID: 27087731 PMCID: PMC4819035 DOI: 10.1016/j.compgeo.2012.07.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/20/2011] [Revised: 06/27/2012] [Accepted: 07/19/2012] [Indexed: 06/05/2023]
Abstract
In the present work, a methodology for setting up virgin stress conditions in discrete element models is proposed. The developed algorithm is applicable to discrete or coupled discrete/continuum modeling of underground excavation employing the discrete element method (DEM). Since the DEM works with contact forces rather than stresses there is a need for the conversion of pre-excavation stresses to contact forces for the DEM model. Different possibilities of setting up virgin stress conditions in the DEM model are reviewed and critically assessed. Finally, a new method to obtain a discrete element model with contact forces equivalent to given macroscopic virgin stresses is proposed. The test examples presented show that good results may be obtained regardless of the shape of the DEM domain.
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Bazzi M, Beer G, Bombelli L, Bragadireanu A, Cargnelli M, Curceanu (Petrascu) C, dʼUffizi A, Fiorini C, Frizzi T, Ghio F, Guaraldo C, Hayano R, Iliescu M, Ishiwatari T, Iwasaki M, Kienle P, Levi Sandri P, Longoni A, Marton J, Okada S, Pietreanu D, Ponta T, Rizzo A, Romero Vidal A, Sbardella E, Scordo A, Shi H, Sirghi D, Sirghi F, Tatsuno H, Tudorache A, Tudorache V, Vazquez Doce O, Wünschek B, Widmann E, Zmeskal J. Measurements of the strong-interaction widths of the kaonic (3)He and (4)He 2p levels. PHYSICS LETTERS. [PART B] 2012; 714:40-43. [PMID: 22876000 PMCID: PMC3405488 DOI: 10.1016/j.physletb.2012.06.071] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/04/2012] [Revised: 06/06/2012] [Accepted: 06/26/2012] [Indexed: 06/01/2023]
Abstract
The kaonic (3)He and (4)He X-rays emitted in the [Formula: see text] transitions were measured in the SIDDHARTA experiment. The widths of the kaonic (3)He and (4)He 2p states were determined to be [Formula: see text], and [Formula: see text], respectively. Both results are consistent with the theoretical predictions. The width of kaonic (4)He is much smaller than the value of [Formula: see text] determined by the experiments performed in the 70's and 80's, while the width of kaonic (3)He was determined for the first time.
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Tatsuno H, Bazzi M, Beer G, Bombelli L, Bragadireanu A, Cargnelli M, Curceanu (Petrascu) C, d’Uffizi A, Fiorini C, Frizzi T, Ghio F, Guaraldo C, Hayano R, Iliescu M, Ishiwatari T, Iwasaki M, Kienle P, Levi Sandri P, Longoni A, Marton J, Okada S, Pietreanu D, Ponta T, Rizzo A, Romero Vidal A, Sbardella E, Scordo A, Shi H, Sirghi D, Sirghi F, Tudorache A, Tudorache V, Vazquez Doce O, Widmann E, Wünschek B, Zmeskal J. Kaonic 3He and 4He measurements in the SIDDHARTA experiment at the DAΦNE collider. EPJ WEB OF CONFERENCES 2012. [DOI: 10.1051/epjconf/20123702002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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38
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Bazzi M, Beer G, Bombelli L, Bragadireanu A, Cargnelli M, Corradi G, Curceanu (Petrascu) C, d'Uffizi A, Fiorini C, Frizzi T, Ghio F, Girolami B, Guaraldo C, Hayano R, Iliescu M, Ishiwatari T, Iwasaki M, Kienle P, Levi Sandri P, Longoni A, Marton J, Okada S, Pietreanu D, Ponta T, Rizzo A, Romero Vidal A, Scordo A, Shi H, Sirghi D, Sirghi F, Tatsuno H, Tudorache A, Tudorache V, Vazquez Doce O, Widmann E, Wünschek B, Zmeskal J. First measurement of kaonic helium-3 X-rays. PHYSICS LETTERS. [PART B] 2011; 697:199-202. [PMID: 21633519 PMCID: PMC3087507 DOI: 10.1016/j.physletb.2011.02.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2010] [Revised: 01/10/2011] [Accepted: 02/01/2011] [Indexed: 05/28/2023]
Abstract
The first observation of the kaonic (3)He 3d→2p transition was made, using slow K- mesons stopped in a gaseous (3)He target. The kaonic atom X-rays were detected with large-area silicon drift detectors using the timing information of the K+K- pairs of ϕ-meson decays produced by the DAΦNE e+e- collider. The strong interaction shift of the kaonic (3)He 2p state was determined to be -2±2(stat)±4(syst) eV.
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Okada S, Bazzi M, Beer G, Bombelli L, Bragadireanu A, Cargnelli M, Corradi G, Curceanu (Petrascu) C, d’Uffizi A, Fiorini C, Frizzi T, Ghio F, Girolami B, Guaraldo C, Hayano R, Iliescu M, Ishiwatari T, Iwasaki M, Kienle P, Levi Sandri P, Longoni A, Lucherini V, Marton J, Pietreanu D, Ponta T, Rizzo A, Romero Vidal A, Scordo A, Shi H, Sirghi D, Sirghi F, Tatsuno H, Tudorache A, Tudorache V, Vazquez Doce O, Widmann E, Zmeskal J. Precision Spectroscopy of Kaonic Atoms at DAΦNE. EPJ WEB OF CONFERENCES 2010. [DOI: 10.1051/epjconf/20100303023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Ajimura S, Beer G, Bhang H, Bragadireanu M, Buehler P, Busso L, Cargnelli M, Choi S, Curceanu C, Enomoto S, Faso D, Fujioka H, Fujiwara Y, Fukuda T, Fukuda Y, Guaraldo C, Hashimoto T, Hayano R, Hiraiwa T, Iio M, Iliescu M, Inoue K, Ishikawa T, Ishimoto S, Ishiwatari T, Itahashi K, Iwai M, Iwasaki M, Kienle P, Kou H, Marton J, Matsuda Y, Mizoi Y, Morra O, Nagae T, Noumi H, Ohnishi H, Okada S, Outa H, Pietreanu D, Sada Y, Sakaguchi A, Sakuma F, Sato M, Sekimoto M, Sirghi D, Sirghi F, Suzuki K, Suzuki S, Suzuki T, Tatsuno H, Tokuda M, Tomono D, Toyoda A, Tsukada K, Widmann E, Yamazaki T, Yim H, Zmeskal J. A search for deeply-bound kaonic nuclear states at J-PARC. EPJ WEB OF CONFERENCES 2010. [DOI: 10.1051/epjconf/20100307015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Hof JO, Osterhoff DR, Beer G. Polymorphism of sorbitol dehydrogenase and 6-phosphogluconate dehydrogenase in swine (Sus scrofa). ACTA ACUST UNITED AC 2009. [DOI: 10.1111/j.1365-2052.1972.tb01259.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Agnello M, Beer G, Benussi L, Bertani M, Bianco S, Botta E, Bressani T, Busso L, Calvo D, Camerini P, Cerello P, Dalena B, De Mori F, D'Erasmo G, Di Santo D, Fabbri FL, Faso D, Feliciello A, Filippi A, Filippini V, Fiore EM, Fujioka H, Gianotti P, Grion N, Lucherini V, Marcello S, Maruta T, Mirfakhrai N, Morra O, Nagae T, Olin A, Outa H, Pace E, Palomba M, Pantaleo A, Panzarasa A, Paticchio V, Piano S, Pompili F, Rui R, Simonetti G, So H, Tomassini S, Toyoda A, Wheadon R, Zenoni A. Evidence for a kaon-bound state K(-)pp produced in K(-) absorption reactions at rest. PHYSICAL REVIEW LETTERS 2005; 94:212303. [PMID: 16090313 DOI: 10.1103/physrevlett.94.212303] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2005] [Indexed: 05/03/2023]
Abstract
We have searched for a deeply bound kaonic state by using the FINUDA spectrometer installed at the e(+)e(-) collider DAPhiNE. Almost monochromatic K(-)'s produced through the decay of phi(1020) mesons are used to observe K(-) absorption reactions stopped on very thin nuclear targets. Taking this unique advantage, we have succeeded to detect a kaon-bound state K(-)pp through its two-body decay into a Lambda hyperon and a proton. The binding energy and the decay width are determined from the invariant-mass distribution as 115(+6)(-5)(stat)(+3)(-4)(syst) MeV and 67(+14)(-11)(stat)(+2)(-3)(syst) MeV, respectively.
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Beer G, Bragadireanu AM, Cargnelli M, Curceanu-Petrascu C, Egger JP, Fuhrmann H, Guaraldo C, Iliescu M, Ishiwatari T, Itahashi K, Iwasaki M, Kienle P, Koike T, Lauss B, Lucherini V, Ludhova L, Marton J, Mulhauser F, Ponta T, Schaller LA, Seki R, Sirghi DL, Sirghi F, Zmeskal J. Measurement of the kaonic hydrogen x-ray spectrum. PHYSICAL REVIEW LETTERS 2005; 94:212302. [PMID: 16090312 DOI: 10.1103/physrevlett.94.212302] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2004] [Indexed: 05/03/2023]
Abstract
The DEAR (DAPhiNE exotic atom research) experiment measured the energy of x rays emitted in the transitions to the ground state of kaonic hydrogen. The measured values for the shift epsilon and the width Gamma of the 1s state due to the K(-)p strong interaction are epsilon(1s)=-193 +/- 37 (stat) +/- 6 (syst) eV and Gamma(1s)=249 +/- 111 (stat) +/- 30 (syst) eV, the most precise values yet obtained. The pattern of the kaonic hydrogen K-series lines, K(alpha), K(beta), and K(gamma), was disentangled for the first time.
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Breithardt OA, Beer G, Stolle B, Lieder F, Franke A, Lawrenz T, Hanrath P, Kuhn H. Mid systolic septal deceleration in hypertrophic cardiomyopathy: clinical value and insights into the pathophysiology of outflow tract obstruction by tissue Doppler echocardiography. Heart 2005; 91:379-80. [PMID: 15710730 PMCID: PMC1768773 DOI: 10.1136/hrt.2004.036103] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Beer G, Kuhn. H. 5�DIAGNOSTIC PITFALLS IN THE ECHOCARDIOGRAPHIC EVALUATION OF HYPERTROPHIC OBSTRUCTIVE CARDIOMYOPATHY (HOCM) REFERRED FOR CATHETER INTERVENTIONAL THERAPY. Echocardiography 2004. [DOI: 10.1111/j.0742-2822.2004.t01-4-09069.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Beer G, Reinecke P, Gabbert HE, Hort W, Kuhn H. Fabry disease in patients with hypertrophic cardiomyopathy (HCM). ZEITSCHRIFT FUR KARDIOLOGIE 2002; 91:992-1002. [PMID: 12490989 DOI: 10.1007/s00392-002-0870-7] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Fabry disease is an X-linked recessive lysosomal storage disorder with variable phenotype characterized by the accumulation of glycosphingolipid in various tissues. Unlike patients with the classical systemic Fabry disease entity, who present with multiple organ involvement, patients with a cardiac variant of Fabry disease are characterized mainly by myocardial hypertrophy. Therefore, the cardiac variant of Fabry disease may be defined as a cardiomyocytic storage disorder, thus, mimicking the clinical features of hypertrophic obstructive and especially non-obstructive cardiomyopathy. In patients with unexplained left ventricular hypertrophy the diagnosis of a cardiac variant of Fabry disease is performed by light- and electron microscopic evaluation of endomyocardial catheter biopsy specimens and/or serologic investigations (decreased activity of alpha-galactosidase A in plasma or leucocytes). Several studies show that between 4% and 8% of unselected patients with the clinical features of hypertrophic non-obstructive cardiomyopathy have a cardiac variant of Fabry disease. In each patient with unexplained myocardial hypertrophy concealed myocardial storage disease, especially cardiac Fabry disease has to be considered and should be ruled out or confirmed by endomyocardial catheter biopsy. This is important because of the recently reported alpha-galactosidase A enzyme replacement therapy in Fabry disease. Randomized, multicenter studies are mandatory to test the hypothesis that enzyme replacement therapy leads to a beneficial clinical effect in the cardiac variant form of Fabry disease and may prevent the progression of the disease in asymptomatic patients.
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Stoob K, Beer G, Weishaupt D. [Adult, afebrile patient with rapidly growing tumor of the upper arm: Bartonella henselae as the etiology]. ROFO-FORTSCHR RONTG 2002; 174:363-4. [PMID: 11885017 DOI: 10.1055/s-2002-20594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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Burg D, Infanger M, Meuli-Simmen C, Stallmach T, Beer G, Amgwerd S, Meyer VE. [Methods, indications and validation of intraoperative nerve conductivity testing]. HANDCHIR MIKROCHIR P 2002; 34:3-16. [PMID: 11898050 DOI: 10.1055/s-2002-22109] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022] Open
Abstract
During nerve surgery, electrodiagnostic methods are applied to assess the availability and viability of nerve fibers and to adjust operative measures accordingly. The validity of this procedure is verified by histology and by the outcome of the operation. This paper explains the techniques of intraoperative nerve action potential (NAP) and somatosensory evoked potential (SEP) recording, how to interpret the electrodiagnostic results, and describes both the special features and the limitations of the methods. We found reliable results of neurography, detecting the presence or absence of spontaneous nerve regeneration across a lesion in continuity months before the reinnervation reached its final target. Based on our results, we suggest that NAP recording of the exposed nerve can widely prevent unnecessary nerve or fascicle resection. Besides this important indication, the nerve function evaluation was successfully used in nerve surgery whenever the quality of the nerve parenchyma was crucial to the operative management. Further indications such as evaluating brachial plexus lesions and the condition of nerve roots, judging the proximal coaptation site in nerve reconstruction, tracing the site of a nerve lesion and identifying the pathophysiology of nerve malfunction are exemplified. Intraoperative nerve conductivity testing should not be considered as a replacement of but rather as a complement to preoperative clinical, electrophysiological and imaging evaluations and a thorough intraoperative morphological examination.
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Wildi SM, Gämperli A, Beer G, Markwalder K. Severe envenoming by a Gaboon viper (Bitis gabonica). Swiss Med Wkly 2001; 131:54-5. [PMID: 11219193 DOI: 10.4414/smw.2001.06142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Wildi SM, Gämperli A, Beer G, Markwalder K. Severe envenoming by a Gaboon viper (Bitis gabonica). Swiss Med Wkly 2001; 131:54-5. [PMID: 11219193 DOI: 2001/03/smw-06142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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