Globálny slovník portálu IMED

Pojem: 
Extrakraniální radioterapie a radiochirurgie
Definícia: 

Extrakraniální stereotaktická radioterapie/radiochirurgie (SBRT – stereotactic body radiotherapy) využívá velmi přesné aplikace vysoké jednotlivé dávky záření v malém počtu frakcí. Díky stále lepší vybavenosti radioterapeutických pracovišť z hlediska možností obrazové navigace a fixace pacientů lze stereotaktický přístup využít prakticky ve všech anatomických lokalitách. S výhodou nalézá uplatnění zvláště při léčbě nádorových ložisek v plících, játrech, dutině břišní či pánvi a ve skeletu.

Kľúčové slovo: 
Radiochirurgie
Pojem: 
syndróm nedostatku testosterónu - TDS
Definícia: 

<div>TDS (testosterone deficiency syndrome) je definovan&yacute; ako klinick&yacute; a biochemick&yacute; syndr&oacute;m, ku ktor&eacute;mu doch&aacute;dza v procese starnutia mužov. Nedostatok testoster&oacute;nu u postihnut&yacute;ch mužov nepriaznivo vpl&yacute;va na funkcie viacer&yacute;ch org&aacute;nov&yacute;ch syst&eacute;mov. Vedie k podstatn&eacute;mu zhor&scaron;eniu kvality života. U mužov medzi 40 - 70 rokmi kles&aacute; biologicky akt&iacute;vny testoster&oacute;n v s&eacute;re približne o 1,2 % ročne.</div>

Pojem: 
Spolupráca endokrinológa a oftalmológa pri endokrinnej orbitopatii
Definícia: 

Práca sa venuje návodu, ako by mala vyzerať spolupráca oftalmológa s endokrinológom a zbytočným chybám, ku ktorým často zbytočne dochádza.

Kľúčové slovo: 
hrúbka extraokulárnych svalov
vnútroočný tlak
epidemiologické faktory
Endokrinná orbitopatia
farebná dopplerovská ultrasonografia
Pojem: 
Epithelial-mesenchymal transition (EMT) – epiteliálno-mezenchymálny prechod
Definícia: 

<p>
<pre>je fyziologick&yacute; proces prebiehaj&uacute;ci v embryogen&eacute;ze a pri hojen&iacute; r&aacute;n. Prejavuje sa aj v patologick&yacute;ch procesoch tumorigen&eacute;zy, ako s&uacute; inici&aacute;cia
a progresia n&aacute;dorov. Z&aacute;kladnou vlastnosťou EMT je strata epitelovej morfol&oacute;gie bunky a z&iacute;skanie vlastnost&iacute;, ktor&eacute; s&uacute; podobn&eacute; fibroblastom. Je
to sp&ocirc;soben&eacute; najm&auml; zn&iacute;ženou expresiou E-kadher&iacute;nu v d&ocirc;sledku aktiv&aacute;cie transkripčn&eacute;ho komplexu TCF/LEF s b-katen&iacute;nom, ako aj transkripčn&yacute;ch
faktorov Twist, Snai1, ZEB, ktor&yacute;ch aktivita koreluje s fenotypom kmeňov&yacute;ch buniek.</pre>
</p>

Kľúčové slovo: 
iniciácia a progresia nádorov
Pojem: 
Nasýtené mastné kyseliny (NMK)
Definícia: 

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<p class=\"MsoNormal\"><strong><span style=\"font-size: 12pt; line-height: 115%; font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;\"><span></span></span></strong><span style=\"font-size: 12pt; line-height: 115%; font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;\">maj&uacute; druh&yacute; najvy&scaron;&scaron;&iacute; aterog&eacute;nny potenci&aacute;l. NMK nie s&uacute; len v&nbsp;živoč&iacute;&scaron;nych tukoch (maslo 62 %, bravčov&aacute; masť 40 %), ale aj v&nbsp;niektor&yacute;ch rastlinn&yacute;ch tukoch (kokosov&yacute; a&nbsp;palmov&yacute; olej). Zatiaľ st&aacute;le ch&yacute;ba legislat&iacute;va určuj&uacute;ca povinnosť v&yacute;robcu jasne deklarovať množstvo TFMK a&nbsp;NMK v&nbsp;potravin&aacute;ch.</span></p>

Kľúčové slovo: 
aterogénny potenciál
Pojem: 
Letton Wilsonova operácia
Definícia: 

Letton Wilsonova operácia zachovávajúca chvost pankreasu a slezinu. Proximálny segment pankreasu uzavretý lineárnym staplerom, distálny invaginovaný do exkludovanej kľučky jejuna Roux Y. Používaná pri transsekcii pankreasu s otvoreným hlavným pankreatickým vývodom.

Pojem: 
Empyém
Definícia: 

<p>
pr&iacute;tomnosť hnisavej tekutiny v pleur&aacute;lnom priestore</p>

Pojem: 
Fekálny kalprotektín
Definícia: 

<p>
Fek&aacute;lny kalprotekt&iacute;n&nbsp; (FK) sa použ&iacute;va na stanovenie z&aacute;palovej&nbsp;akt&iacute;vity Crohnovej choroby a ulcer&oacute;znej kolit&iacute;dy.&nbsp;&nbsp;Je to&nbsp;kalcium viažuci prote&iacute;n, nach&aacute;dzaj&uacute;ci sa v&nbsp;neutrofiloch, menej v&nbsp;monocytoch a&nbsp;reakt&iacute;vnych makrof&aacute;goch&nbsp;<span style=\"font-family: \'Times New Roman\', \'serif\'; font-size: 12pt\">. Patr&iacute; do rodiny prote&iacute;nov označovan&yacute;ch ako S100</span><span style=\"font-family: \'Times New Roman\', \'serif\'; font-size: 12pt\">. Tvor&iacute; 60 % prote&iacute;nov cytoplazmy granulocytov</span><span style=\"font-family: \'Times New Roman\', \'serif\'; font-size: 12pt\">.<span style=\"color: red\"> </span>FK vykazuje bakt&eacute;riostatick&eacute; a&nbsp;fungistatick&eacute; vlastnosti in vitro inhib&iacute;ciou rastu r&ocirc;znych mikroorganizmov mechanizmom zahrňuj&uacute;cim extracelul&aacute;rne vylučovanie zinku. Nie je akt&iacute;vne vylučovan&yacute; z&nbsp;neutrofilov, ale je uvoľňovan&yacute; z&nbsp;odumret&yacute;ch a po&scaron;koden&yacute;ch buniek</span><span style=\"font-family: \'Times New Roman\', \'serif\'; font-size: 12pt\">. Uvoľnen&yacute; kalprotekt&iacute;n vedie k&nbsp;apopt&oacute;ze ďal&scaron;&iacute;ch buniek, v&yacute;sledkom čoho je, že koncentr&aacute;cia FK z&nbsp;apoptotick&yacute;ch neutrofilov st&uacute;pa v&nbsp;ter&eacute;ne z&aacute;palu. FK je absorbovan&yacute; stolicou a&nbsp;nedoch&aacute;dza ani k&nbsp;jeho enzymatickej degrad&aacute;cii. Na jeho objekt&iacute;vne hodnotenie zo vzorky stolice stač&iacute; menej ako <st1:metricconverter productid=\"5 gramov\" w:st=\"on\">5 gramov</st1:metricconverter></span><span style=\"font-family: \'Times New Roman\', \'serif\'; font-size: 12pt\">. Je odoln&yacute; voči bakteri&aacute;lnej degrad&aacute;cii a stabiln&yacute; pri izbovej teplote až do 7 dn&iacute; po odbere vzorky stolice. </span></p>

Kľúčové slovo: 
Diagnostika IBD
Pojem: 
Fidaxomycín
Definícia: 

<p>
Fidaxomyc&iacute;n je makrocyklick&eacute; antibiotikum, ktor&eacute; sa v &scaron;t&uacute;diach in vitro uk&aacute;zalo ako akt&iacute;vnej&scaron;ie v porovnan&iacute; s vankomyc&iacute;nom voči v&scaron;etk&yacute;m kmeňom Clostrium difficile, vr&aacute;tane NAP1/BI/027. Jeho &uacute;činok spoč&iacute;va v inhib&iacute;cii synt&eacute;zy RNA-polymer&aacute;zy Cd, a t&yacute;m aj sporul&aacute;cie a tvorby tox&iacute;nov. T&aacute;to aktivita v kombin&aacute;cii &nbsp;s minim&aacute;lnou syst&eacute;movou absorpciou, vysokou fek&aacute;lnou koncentr&aacute;ciou a limitovanou aktivitou voči komponentom norm&aacute;lnej črevnej fl&oacute;ry sa potvrdila aj in vivo. Fidaxomyc&iacute;n je bakteric&iacute;ne antibiotikum&nbsp;s predĺžen&yacute;m postantibiotick&yacute;m efektom. Pod&aacute;va sa v d&aacute;vke 2x200 mg tbl denne 10 dn&iacute; per os, do nazogastrickej sondy alebo klyzmou. Toto antibiotikum sa prakticky nevstreb&aacute;va z tr&aacute;viaceho traktu, nevyžaduje &uacute;pravu d&aacute;vky u pacientov vo vy&scaron;&scaron;om veku, ani pri ren&aacute;lnej či hepat&aacute;lnej insuficiencii.</p>

Kľúčové slovo: 
makrocyklické antibiotiká
Pojem: 
mozgový natriuretický peptid (BNP, brain natriuretic peptide)
Definícia: 

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Natriuretick&yacute; peptid - BNP bol v r. 1988 izolovan&yacute; z prasačieho mozgu. Nesk&ocirc;r sa zistilo, že sa tento horm&oacute;n tvor&iacute; a uvoľňuje z kardiomyocytov kom&ocirc;r (a v men&scaron;ej miere aj predsien&iacute;) &nbsp;pri tlakovom a objemovom preťažen&iacute; srdca. M&ocirc;že signalizovať preťaženie srdca, ktor&eacute; nie je bezpodmienečne asociovan&eacute; s bunkov&yacute;m po&scaron;koden&iacute;m. Aj keď je ne&scaron;pecifick&yacute;m kardiomarkerom pre ochorenie srdca, pri spr&aacute;vnej interpret&aacute;cii m&aacute; v&yacute;razn&yacute; prognostick&yacute; potenci&aacute;l pre stanovenie kardiovaskul&aacute;rneho rizika.&nbsp;</div>
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Kľúčové slovo: 
kardiálny biomarker
Pojem: 
autotransplantácia srdca
Definícia: 

<p>
operačn&yacute; v&yacute;kon, pri ktorom sa vykon&aacute; exc&iacute;zia (explant&aacute;cia) srdca, odstr&aacute;nenie n&aacute;doru srdca ex vivo, rekon&scaron;trukcia a reimplant&aacute;cia srdca</p>

Kľúčové slovo: 
nádor srdca
Pojem: 
eozinofilná ezofagitída (EoE)
Definícia: 

<p>
je klinicko-histopatologick&aacute; diagn&oacute;za definovan&aacute; pr&iacute;tomnosťou viac ako 15 intraepitelov&yacute;ch eozinofilov v&nbsp;biopsii pažer&aacute;kovej sliznice pri vysokom rozl&iacute;&scaron;en&iacute; (high power field) v&nbsp;spojen&iacute; s&nbsp;klinickou symptomatol&oacute;giou v&nbsp;nepr&iacute;tomnosti refluxovej choroby pažer&aacute;ka (GERD).</p>

Kľúčové slovo: 
intraepitelové eozinofily
Pojem: 
obstipácia
Definícia: 

<p>
<b style=\"color: rgb(128, 0, 0); font-family: Arial; font-size: 15px; background-color: rgb(255, 239, 164);\">&nbsp;</b><span style=\"color: rgb(128, 0, 0); font-family: Arial; font-size: 15px; background-color: rgb(255, 239, 164);\">Menej čast&eacute; vypr&aacute;zdňovanie stolice ako 3 x za t&yacute;ždeň so zahusten&iacute;m črevn&eacute;ho obsahu a s ťažkosťami pri vypr&aacute;zdňovan&iacute;. Pas&aacute;ž v hrubom čreve je spomalen&aacute;, čast&aacute; je aj porucha defekačn&eacute;ho reflexu (n&aacute;vyk na vypr&aacute;zdnenia stolice). Vyskytuje sa po di&eacute;tnych chyb&aacute;ch, pri nedostatku vl&aacute;kniny v potrave, po niektor&yacute;ch liekoch a pri mnoh&yacute;ch syst&eacute;mov&yacute;ch ochoreniach.</span></p>

Pojem: 
Benígna prostatická hyperplázia (BPH)
Definícia: 

<p style=\"margin-left:18pt;\">
Ben&iacute;gna hyperpl&aacute;zia prostaty (BHP) je nezhubn&eacute; zv&auml;č&scaron;enie prostatickej žľazy vznikaj&uacute;ce v&nbsp;procese starnutia, ktor&eacute;ho v&yacute;sledkom m&ocirc;žu ale nemusia byť poruchy močenia (tzv. LUTS &ndash; lower urinary tract symptoms). BPH je načastej&scaron;ie ben&iacute;gne n&aacute;dorov&eacute; ochorenie u&nbsp;mužov &ndash; tvor&iacute; až 80 % z&nbsp;chor&ocirc;b prostaty (citovan&eacute; z Oelke, M. , Bachmann, A. , Descazeaud, A. et al. : Guidelines on management of male lower urinary tract symptoms (LUTS), incl. benign prostatic obstruction (BPO). European Association of Urology guidelines 2012 edition, Arnhem, 2012, pp. 1 &ndash; 73, ISBN/ EAN: 978-90-79754-83-0)</p>

Kľúčové slovo: 
nezhubné zväčšenie prostatickej žľazy
Pojem: 
Obštrukcia na úrovni krčka močového mechúra (BOO – bladder outlet obstruction)
Definícia: 

<p style=\"margin-left:18pt;\">
Urodynamicky dok&aacute;zan&aacute; ob&scaron;trukcia pas&aacute;že moču &ndash; m&ocirc;že byť aj na z&aacute;klade ben&iacute;gnej prostatickej ob&scaron;trukcie (BPO) &ndash; t. j. BOO zapr&iacute;činen&aacute; v&nbsp;d&ocirc;sledku ben&iacute;gneho zv&auml;č&scaron;enia prostaty (BPE benign prostatic obstruction) (citovan&eacute; z Blaivas, J. , Weiss, J. : Urologic clinics of North America: Benign prostatic hyperplasia and lower urinary tract symptoms. Elsevier, 2009, 36, number 4, pp. 403 &ndash; 569, ISBN-13:978-1-4377-1279-7)</p>

Kľúčové slovo: 
obštrukcia pasáže moču – krčok močového mechúra

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