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4203. Artefacts in gravity field modelling

Creator:
Klokočník, Jaroslav, Kostelecký, Jan, Bezděk, Aleš, and Kletetschka, Gunther
Format:
print, bez média, and svazek
Type:
model:article and TEXT
Subject:
geologie, topografie, geology, topography, Artefacts: graining, aliasing, along-track stripes, gravity aspects, gravity field models, topography models, 7, and 551
Language:
English
Description:
Artefacts in applications of the global gravity field and topographic models based on satellite and terrestrial data of diverse kinds are studied. Various types of artefacts are presented and analysed with the aim to understand how the artefacts originated, how to reduce them (if feasible) and to avoid misinterpretations in geoscience. We work with the gravity aspects (gravity anomalies, the Marussi tensor of the second derivatives of disturbing potential, gravity invariants and their specific ratio, strike angles, and virtual deformations), and with surface or bedrock topography. Examples for the Earth, the Moon, and Mars are presented., Jaroslav Klokočník, Jan Kostelecký, Aleš Bezděk and Gunther Kleteschka., and Obsahuje bibliografii
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

4206. Arterial blood supply of the mesosalpinx appears segmentally organized in absence of uterine tubes arteries

Creator:
Tamash, Yana, Hammer, Niels, Varga, Ivan, Supilnikov, Alexey, and Iukhimetc, Sergei
Format:
počítač and online zdroj
Type:
model:article and TEXT
Subject:
uterine tube, mesosalpinx, ovarian reserve, salpingectomy, salpinx, and vascularization
Language:
English
Description:
Arterial branches to the uterus and ovaries that pass through the mesosalpinx contribute significantly to the maintenance of the ovarian reserve. Especially arterial supply of the uterine tube is provided by a number of anastomoses between both the uterine and ovarian vessels. Knowledge on the morphologic peculiarities will allow to identify main contributors especially blood flow ultrasound examination for the purpose of ovary preserving surgery. This study aimed at identifying landmarks especially for so-called low-flow tubal vessels. Arteries of 17 female Thielembalmed bodies were studied along three preselected paramedian segments and measurements taken. A section was made through the center of the ovary perpendicular to uterine tube, then the mesosalpinx tissue distance was divided into 3 equivalent zones: upper, middle and lower thirds. The surface area of the mesosalpinx averaged 1088 ± 62 mm2 . 47.7 ± 7.1 % of the mesosalpinx zones included macroscopically visible vessels. The lower third segment of mesosalpinx was the thickest averaging 2.4 ± 1.5 mm. One to three tubal branches were identified in the middle third of the mesosalpinx. Arterial anastomoses were found in the upper segment of the mesosalpinx, but no presence of a marginal vessel supplying the fallopian tube could be found. Statistically significant moderate positive correlations were established between the diameters of the mesosalpingeal arteries between the three zones. The mesosalpinx, uterine tube and the ovary form areas of segmental blood supply. Variants of tubal vessels appear to be a sparse source of blood supply.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

4207. Arterial pH and blood gas values in rats under three types of general anesthesia: a chronobiological study

Creator:
Pavol Švorc and Darina Petrášová
Format:
print, bez média, and svazek
Type:
model:article and TEXT
Subject:
chronobiologie, anestezie, chronobiology, anesthesia, pH, blood gases, rats, 14, and 612
Language:
English
Description:
The aim of study was to review the status of arterial pH, pO2 and pCO2 under general anesthesias in dependence on the light-dark (LD) cycle in spontaneously breathing rats. The experiments were performed using three- to four-month-old pentobarbital(P)-, ketamine/xylazine(K/X)- and zoletil(Z)-anesthetized female Wistar rats after a four-week adaptation to an LD cycle (12 h light:12 h dark). The animals were divided into three experimental groups according to the anesthetic agent used: P (light n=11; dark n=8); K/X (light n=13; dark n=11); and Z (light n=18; dark n=26). pH and blood gases from arterial blood were analyzed. In P anesthesia, LD differences in pH, pO2, and pCO2 were eliminated. In K/X anesthesia, parameters showed significant LD differences. In Z anesthesia, LD differences were detected for pH and pO2 only. Acidosis, hypoxia, and hypercapnia have been reported for all types of anesthesia during the light period. In the dark period, except for P anesthesia, the environment was more stable and values fluctuated within normal ranges. From a chronobiological perspective, P anesthesia was not the most appropriate type of anesthesia in these rat experiments. It eliminated LD differences, and also produced a more acidic environment and more pronounced hypercapnia than K/X and Z anesthesias., P. Svorc, D. Petrášová, P. Svorc Jr., and Obsahuje bibliografii
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

4208. Arterial stiffening contributes to impairment of cerebrovascular reactivity in patients with coronary artery disease without carotid stenosis

Creator:
David Ručka, Marek, J., Rucklová, Z., Jean-Claude Lubanda, Štěpán Havránek, Jan Škvařil, Verejka, P., Miroslav Chochola, Debora Karetová, Korinek, J., and Aleš Linhart
Format:
print, bez média, and svazek
Type:
article, články, model:article, and TEXT
Subject:
Fyziologie člověka a srovnávací fyziologie, věnčité tepny, fyziologie, coronary arteries, physiology, cerebrovascular reactivity, arterial stiffness, coronary artery disease, 14, and 612
Language:
English
Description:
Impaired cerebrovascular reactivity (CVR), an important risk factor for future stroke, is affected by a presence carotid stenosis. However, in some cases CVR can be impaired in the absence of carotid stenosis due to several poorly characterized mechanisms. We hypothesized that arterial stiffening as observed in coronary heart disease (CHD) could be associated with alteration in CVR in CHD patients without carotid stenosis. The study population consisted of patients referred for coronary angiography without significant carotid stenosis (<50 %). CVR was evaluated by breath holding index (BHI) measured with transcranial color code duplex ultrasound. Arterial stiffness was assessed by pulse wave velocity (PWV) measured by the oscillometric method. The extent of coronary atherosclerosis was quantified by Gensini score (GS). Out of 186 subjects, sixty-two patients fulfilled the inclusion and exclusion criteria. BHI decreased with increasing PWV (r = -0.47, p<0.001). Decrease in BHI was significantly inversely associated with GS (r = -0.61, p<0.001). GS was associated with PWV (p<0.001). In conclusion, impaired CVR was associated with increased arterial stiffening in CHD patients in the absence of significant carotid stenosis. Thus, we speculate that increased arterial stiffness may at least partially contribute to the pathophysiology of CVR alteration in coronary artery disease., D. Rucka, J. Marek, Z. Rucklova, J.-C. Lubanda, S. Havranek, J. Skvaril, P. Varejka, M. Chochola, D. Karetova, J. Korinek, A. Linhart., and Obsahuje bibliografii
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

4209. Arteriální hypertenze a sexuální potřeby

Creator:
Břegová, Bohdana and Vrublová, Yvetta
Format:
657-663, braille, electronic resource, remote, and elektronický zdroj
Type:
model:article, article, Text, statistics, práce podpořená grantem, and TEXT
Subject:
dospělí, lidé, lidé středního věku, mužské pohlaví, ženské pohlaví, rozhovory jako téma, hypertenze--farmakoterapie--komplikace, antihypertenzíva--škodlivé účinky, sexuální dysfunkce fyziologická--chemicky indukované, sexualita--účinky léků, chronická nemoc, erektilní dysfunkce--chemicky indukované, libido--účinky léků, zdraví - znalosti, postoje, praxe, and vzdělávání pacientů jako téma
Language:
Czech and English
Description:
Kvalita ţivota je ovlivněna zdravotním stavem, který zahrnuje fyzické, psychické a sociální charakteristiky. Největším zdravotním, ale i společenským problémem současné epochy nejsou nemoci akutní, ale nemoci dlouhodobé, chronické a trvalé. Výzkum se zaměřuje na oblast sexuality u pacientů s hypertenzí, s důrazem na holistické pojetí lidské osobnosti, hlubší vnímání a proţívání sexuálního ţivota, sexuálních potřeb pacientů. Cíl: Cílem kvalitativního šetření bylo zjistit, zda léčba hypertenze ovlivňuje sexuální potřeby pacientů. Metodika: Výzkumný soubor tvořilo 20 respondentů, výběr zkoumaného vzorku byl záměrný, byli to pacienti, kteří se léčili pro hypertenzi minimálně 1 rok ve Fakultní nemocnici Ostrava. Výzkum byl proveden pomocí kvalitativní metody, sběr dat byl proveden rozhovorem, který byl nahráván na diktafon v příjemném, nerušeném prostředí. Ve výzkumu byla pouţita metoda barvení textu s definovanými 4 kategoriemi a podkategoriemi. Výsledky: Z analýzy rozhovorů vyplynulo, ţe u některých pacientů antihypertenzní terapie negativně ovlivnila jejich sexuální potřeby. Byl zjištěn výskyt sexuálních dysfunkcí, u ţen se jednalo o sníţený sexuální apetit, sníţenou lubrikační schopnost, delší interval k vyvrcholení a u muţe byl objeven problém s erekcí. Závěr: V rámci subjektivní spokojenosti s vlastní sexualitou u pacientů, kteří se léčí s arteriální hypertenzí je důleţitá znalost vedlejších účinků a následná edukace s vyuţitím výsledků vědeckých studií domácích i zahraničních odborníků., The quality of life is influenced by health condition, which include physical, psychological and social features. The biggest, not only medical but also social problem nowadays are not acute diseases but long-term diseases, chronical and permanent. The research is concentrated on the sphere of sexuality among patients with hypertension, with stress on holistic concept of human being, deeper perception and experiencing of sexual life and sexual needs of patients. Aim: The aim of qualitative research was to find out how the treatment of hypertension influences sexual needs of patients. Methods: Researched sample was formed by 20 respondents. The choice of researched sample was intentional. They were patients who were treated for hypertension minimally one year in University Hospital Ostrava. The choice of researched sample was intentional. The research was done by qualitative method, collection of datas was done by interview, which was recorded on voice recorder in a pleasant, by nothing disturbed place. In the research was used method of coloring the text with 4 defined categories and subcathegories. Results: From the analysis of interviews was clear that at some patients antihypertension therapy influenced their sexual needs in a negative way. There was found out the occurrence of sexual dysfunctions. Among women it was lower sexual appetite, lower lubricative ability, longer time for climax and among men was found the problem with erection. Conclusion: Well-timed diagnostics of hypertension, active attitude to sexual life and knowledge of side effects during hypertension therapy can influence sexual experience and satisfaction of patients., Bohdana Břegová, Yvetta Vrublová, and Literatura
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

4210. Artériová hypertenzia – viacnásobný cievny bludný kruh

Creator:
Gavorník, Peter, Dukát, Andrej, Gašpar, Ľudovít, Hučková, Naďa, Slezáková, Laura, Kusendová, Katarína, Gubová, Gabriela, Medová, Denisa, Faktorová, Xénia, and Gavorníková, Eva
Format:
print, text, and regular print
Type:
model:article, article, Text, přehledy, and TEXT
Subject:
lidé, hypertenze--diagnóza--etiologie--farmakoterapie--klasifikace, měření krevního tlaku--metody--přístrojové vybavení, renovaskulární hypertenze--etiologie, hypertenze indukovaná těhotenstvím--patofyziologie, syndromy spánkové apnoe--komplikace, endotel cévní--patofyziologie, nemoci cév--patofyziologie, antihypertenzíva--terapeutické užití, fixní kombinace léků, and endoteliální dysfunkce
Language:
Czech, Slovak, and English
Description:
Cieľ: Úlohou tejto prehľadovej práce o diagnóze a manažmente artériovej hypertenzie je zamerať sa na dokumenty a štúdie o hypertenzii publikované v ostatných rokoch s cieľom určiť ich príspevok k rozšíreniu našich vedomostí o artériovej hypertenzii v klinickej praxi. Diskusia: Artériovú hypertenziu nedefinujú príznaky a znaky, ale čísla hodnôt krvného tlaku. Artériová hypertenzia je cievna choroba (vaskulárny rizikový faktor) viacerých cievnych chorôb (ateroskleróza; arterioloskleróza/arteriolonekróza/arteriolokalcinóza; artériová trombóza; artériová embólia; artériová tromboembólia; artériová disekcia; komplikovaná artériová aneuryzma) a iné. Záver: Artériová hypertenzia je príčinou i následkom funkčného (dysfunkcia endotelu) i štruktúrneho vaskulárneho a orgánového poškodenia (multiorgánovomultivaskulárna choroba). Cievy sú páchateľkami, nástrojmi i obeťami artériovej hypertenzie a orgánovocievnych artériových chorôb. Kľúčové slová: angiológia/vaskulárna medicína – artériová hypertenzia – cievne choroby – cievy – interná medicína – orgánovovaskulárne artériové choroby, Aim: The aim of this review is to address documents and a number of studies on hypertension published in the last years in order to assess their contribution to our expanding knowledge of arterial hypertension. Discussion: Arterial hypertension is not defined by symptoms and signs but by numbers of blood pressure values. Arterial hypertension is vascular disease (vascular risk factor) of many vascular diseases (atherosclerosis; arteriolosclerosis/arteriolonecrosis/arteriolocalcinosis; arterial thrombosis; arterial embolism; arterial thromboembolism; arterial dissection; complicated arterial aneurysm) and other. Conclusion: Arterial hypertension is cause and consequence of functional (endothelial dysfunction) and of structural organovascular injury (multiorganomultivascular disease). Blood vessels are culprits, implements and victims of arterial hypertension and of organovascular arterial diseases. Key words: angiology/vascular medicine – arterial hypertension – blood vessels – internal medicine – organovascular arterial diseases – vascular, and Peter Gavorník, Andrej Dukát, Ľudovít Gašpar, Naďa Hučková, Laura Slezáková, Katarína Kusendová, Gabriela Gubo, Denisa Medová, Xénia Faktorová, Eva Gavorníková
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

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