Cíl. Referujeme tři vybrané kazuistiky pacientů s ischemií ruky vzniklou v souvislosti s dialyzačním a-v zkratem, která byla léčena embolizací distální a.radialis. Metoda. Na našem pracovišti jsme za roky 2009-2012 provedli embolizaci a. radialis distálně od anastomózy dialyzačního zkratu celkem u čtyř pacientů se steal syndromem. Jednalo se o tři ženy a jednoho muže, průměrný věk byl 69 let. Všem pacientům jsme implantovali embolizační spirály do a. radialis distálně od anastomózy A-V zkratu. Výsledky. U všech pacientů došlo k vymizení příznaků steal syndromu, tři pacienti jsou od té doby bez příznaků. U jedné pacientky došlo po 14 dnech od embolizace ke spontánní rekanalizaci embolizované části tepny a po 5 měsících k reci divě klinických příznaků steal syndromu, po reembolizaci Amplatz plugem došlo k trvalému vymizení klinických příznaků. Závěr. Embolizace a.radialis distálně od a-v anastomózy dialyzačního zkratu je účinný způsob léčby steal syndromu způsobených přítomností zkratu. Je ale nutné si uvědomit, že se jedná většinou o trvalý uzávěr a.radialis, a hrozí tedy riziko ischémie ruky v případě uzávěru ostatních tepen zásobujících ruku., Aim. We present three cases of patients with hand ischemia which was associated with dialysis arteriovenous fistula and which was treated by embolization of distal radial artery. Methods. During years 2009-2012 in our department we performed embolization of radial artery distal to the anastomosis of dialysis fistula in 4 patients with steal syndrome. These were three women and one man, average age 69 years. In all cases we implanted embolization spirals to radial artery distal to the anastomosis of arteriovenous fistula. Results. In all patients the symptoms of steal syndrome disappeared, three patients are symptom-free until now. In one patient a spontaneous recanalization of the treated part of the artery occurred 14 days after the embolization and clinical symptoms of steal syndrome returned after 5 months. Permanent result in this case with no clinical symptoms was achieved by re-embolization by Amplatz plug. Conclusion. The embolization of radial artery distal to the arteriovenous anastomosis of dialysis fistula is an effective way to treat steal syndrome caused by the presence of the shunt. However we need to consider that this is a permanent closure of radial artery and there is a risk of hand ischemia in case of occlusion of the other arteries supplying hand., Kaván J, Křivánek J, Slavíková M, Kmentová A., and Literatura
Kompresivní osteoporotické fraktury obratlů jsou problémem převážně v seniorském věku, kdy se stávají závažným imobilizujícím onemocněním, které ve většině případů vede k trvalé disaptibilitě a ztrátě soběstačnosti. Se stárnutím populace očekáváme postupný nárůst této komplikace osteoporózy. Jako velmi efektivní řešení přinášející okamžitou úlevu od bolesti a možnost okamžité mobilizace nemocného se jeví metoda perkutánní vertebroplastiky. Nejen pro svou miniinvazivitu je perkutánní vertebroplastika vhodným ošetřením kompresivních osteoporotických fraktur i pro polymorbidní seniory vyšších věkových skupin. Autorky podávají přehledné informace o indikacích, kontraindikacích a komplikacích vertebroplastiky samé a současně se zabývají přínosem a možnostmi využití této techniky z pohledu geriatrie., Ivana Doleželová, Eva Topinková, and Lit.: 19
Článek Permakultura? Mojmíra Vlašína z p rvního čísla časopisu Anthropologia integra nabízí čtenářům lákavou představu eko- logicky šetrné technologie pěstování kulturních plodin, nevyžadující aplikace pesticidů či minerálních hnojiv, energeticky minimálně náročné a p řitom poskytující více potravin než třeba obilné pole. Z p ohledu současné vědy o r ostlinách je ovšem možnost realizace takto efektivních permakultur pro dostatečnou výživu rostoucí lidské populace čirou mystifikací. Text polemiky nejen dokládá nereálnost tvrzení zmíněného článku, ale také nabízí jinou, vědecky podloženou alternativu moderního, vysoce produktivního a p řitom ekologicky šetrného zemědělství, vy- cházejícího z v yužití nejrůznějších typů geneticky modifikovaných (GM) plodin. Její přínos a d e facto budoucí nezbytnost pro světový boj proti hladu a c hudobě ilustruje s p omocí „ammanovských tezí“, shrnujících závěry nedávných jednání jednak vatikánské Pontifikální Akademie, jednak předních německých vědeckých společností., The contribution of Mojmír Vlašín entitled Permaculture? and published in the first issue of Anthropologia Integra offered to its readers attractive view on the ecologically friendly technology of the crop production, supposed to supply growing human population with the sufficient food amount. As postulated, in permaculture praxis no mineral fertilization, no pesticide application would be necessary to produce more edible biomass then conventional cereal field is able to provide. Unfortunately, from the point of view of recent plant biology the realization of similar world permaculture appears to be pure mystification. The only modern alternative to make existing conventional agrotechnologies both more effective and also ecologically friendly represents the application of various GM crops. The “Amman’s Thesis” based on the conclusions and recommendations of some recent European high reputation meetings (Pontifical Academy of Sciences, Leopol- dina, German Academy of Sciences) illustrates unique asset of the GM technologies in solution of the world hunger, malnutrition and human poverty problems., Zdeněk Opatrný, and Literatura
The purpose of this study was to investigate plasma concentrations of cyclic guanosine monophosphate (cGMP) and atrial natriuretic peptide (ANP) during and after real and simulated space flight. Venous blood was obtained 3 min after the beginning and 2 min after the lower body negative pressure maneuver in two cosmonauts preflight (supine), inflight, and postflight (supine) and in five other subjects before, at the end, and 4 days after a 5-day head-down tilt (-6°) bed rest. In cosmonaut 1 (10 days in space), plasma cGMP fell from preflight 4.3 to 1.4 nM on flight day 6, and was 3.0 nM on the fourth day after landing. In cosmonaut 2 (438 days in space), it fell from preflight 4.9 to 0.5 nM on on flight day 3, and stayed <0.1 nM with 5, 9, and 14 months in space, as well as on the fourth day after landing. Three months after the flight his plasma cGMP was back to normal (6.3 nM). Cosmonaut 2 also displayed relatively low inflight ANP values but returned to preflight level immediately after landing. In a ground-based simulation on five other persons, supine plasma cGMP was reduced by an average of 30 % within 5 days of 6° head-down tilt bed rest. The data consistently demonstrate lowered plasma cGMP with real and simulated weightlessness, and a complete disappearance of cGMP from plasma during, and shortly after long-duration space flight., A. Rössler, V. Noskov, Z. László, V.V. Polyakow, H. G. Hinghofer-Szalkay., and Obsahuje bibliografii
In Autumn 2010 a new permanent GPS station started observati ons intended to investigate the episodic displacements o f rocks in the Książ Massif, where the Geodynamic Laboratory (LG) is situated. These investigations are being made for common interpretation with water-tubes and horizontal pendulums tiltmeters registering large (one order of magnitude greate r than the tidal effects) non-periodic geodynamic signals. The studies conducted as up to date excluded instrumental and loading effects as potential reasons of those signals. The construction of water-tube tiltmeters and their measuring principles allowed to state that the strong non-tidal signals have a geodynamic nature. To support investig ation of this problem, different analysis of the GPS data are performed in appropriate scales and applying various processing methods. The applied methods refer to selected reference GPS stations in Poland and their neighbors and are aimed at reduction of disturbance effects of geophysical origin such as tectonic activity, post-glacial rebound, anthropogenic effects, etc., Ryszard Zdunek., and Obsahuje bibliografické odkazy
Physical mass properties of various types of rocks were ascertained, and their relationships are discu ssed in this article. Basedon water permeability and mercury intrusion porosimetry methods, conductivity coefficient, porosity, and pore size distribution were determined. Furthermore, bulk and particle densities of rocks we re determined. All laboratory tests were carried out according to Czech versi on of the Technical specif ication CEN ISO/TS 17892-11:2004. The above-mentioned specification has the status of the Czech standard (ČSN, CEN). Permeability and porosity are in close relation, and it could be assumed that its relationship is linear, i.e., with increasing porosity, permeability increases as well. This relationship is influenced by other rock properties, such as the amount of open and closed pores with in the rock sample, size, and distribution of pores or mineral admixtures. From this point of view, it is necessary to study these physical properties of rocks as well, because this enables an overall analysis of rocks and its possible use for engineering constructions, Jan Šperl and Jiřina Trčková., and Obsahuje bibliografické odkazy
Permeability refers to the ability of coal to transmit gas when a pressure or concentration gradient exists across it. The permeability of coal is dependent upon factors that include effective stress, gas pressure, water content, disturbance associated with drilling and matrix swelling/shrinkage due to adsorption/desorption. A programme of laboratory tests were conducted on coal samples from the Bulli seam for evaluating the permeability and drainability of coal. Two different types of permeability apparatus were used in this study. The methods of permeability testing of coal under different triaxial conditions are discussed. Permeability testing of the Bulli seam coal with N2 is described. The laboratory test results were found to be in agreement with the calculated permeability values, Naj Aziz, Ting Ren, Jan Nemcik and Lei Zhang., and Obsahuje bibliografii