{"id":3120,"date":"2017-12-14T14:49:08","date_gmt":"2017-12-14T13:49:08","guid":{"rendered":"https:\/\/www.czech-neuro.cz\/?page_id=3120"},"modified":"2017-12-14T14:49:08","modified_gmt":"2017-12-14T13:49:08","slug":"carpal-tunnel-syndrome","status":"publish","type":"page","link":"https:\/\/www.czech-neuro.cz\/en\/pro-odborniky\/recommended-practices\/doporuceni-pro-prakticke-lekare\/carpal-tunnel-syndrome\/","title":{"rendered":"Carpal tunnel syndrome"},"content":{"rendered":"<p>Standard\u00a0elektrofyziologick\u00e9ho\u00a0vy\u0161et\u0159en\u00ed syndromu karp\u00e1ln\u00edho tunelu pro pot\u0159eby hl\u00e1\u0161en\u00ed choroby z&nbsp;povol\u00e1n\u00ed<\/p>\n<p>Standard\u00a0elektrofyziologick\u00e9ho\u00a0vy\u0161et\u0159en\u00ed syndromu karp\u00e1ln\u00edho tunelu pro pot\u0159eby hl\u00e1\u0161en\u00ed choroby z&nbsp;povol\u00e1n\u00ed\u00a0Kada\u0148ka\u00a0Z., Dufek J, Hromada J.\u00a0\u00davod\u00a0Podn\u011btem k&nbsp;t\u00e9to pr\u00e1ci byla snaha pracovn\u00edk\u016f zab\u00fdvaj\u00edc\u00edch se profesion\u00e1ln\u00edmi chorobami definovat\u00a0elektrofyziologicky\u00a0st\u0159edn\u00ed stupe\u0148 syndromu karp\u00e1ln\u00edho tunelu (SKT), tak jak to vy\u017eaduje na\u0159\u00edzen\u00ed vl\u00e1dy \u010d.&nbsp;290\/1995 pro ohl\u00e1\u0161en\u00ed profesionality\u00a0SKT. Skupina\u00a0elektromyografist\u016f, kter\u00e1 se pokou\u0161ela tento po\u017eadavek \u0159e\u0161it, narazila dosti ne\u010dekan\u011b na p\u0159ek\u00e1\u017eku spo\u010d\u00edvaj\u00edc\u00ed v&nbsp;naprost\u00e9 nejednotnosti v&nbsp;prov\u00e1d\u011bn\u00ed\u00a0elektrofyziologick\u00e9ho\u00a0vy\u0161et\u0159en\u00ed a&nbsp;nastaven\u00ed norm\u00e1ln\u00edch hodnot u&nbsp;perifern\u00edch nerv\u016f zahrnut\u00fdch do vy\u0161et\u0159en\u00ed\u00a0SKT\u00a0v laborato\u0159\u00edch na\u0161\u00ed republiky, ale i&nbsp;v&nbsp;jin\u00fdch st\u00e1tech. T\u00edm se oz\u0159ejmila nemo\u017enost vz\u00e1jemn\u00e9ho dorozum\u011bn\u00ed mezi pracovi\u0161ti chorob z&nbsp;povol\u00e1n\u00ed a&nbsp;jejich obt\u00ed\u017en\u00e1 komunikace s\u00a0elektrofyziologick\u00fdmi\u00a0laborato\u0159emi. Sjednocen\u00ed postupu mezi laborato\u0159emi mimo \u0159ady nev\u00fdhod (nutnost m\u011bnit nacvi\u010den\u00e9 postupy, nutnost zm\u011bny normativn\u00edch hodnot, nezbytnost \u010dasov\u011b n\u00e1ro\u010dn\u00e9ho udr\u017eov\u00e1n\u00ed a&nbsp;m\u011b\u0159en\u00ed teploty k\u016f\u017ee) nese jednu p\u0159ednost, pro kterou to stoj\u00ed za to podstoupit- v\u011bt\u0161\u00ed srozumitelnost a&nbsp;srovnatelnost\u00a0EMG\u00a0n\u00e1lez\u016f ve v\u0161ech laborato\u0159\u00edch a&nbsp;u&nbsp;v\u0161ech konzument\u016f\u00a0elektrofyziologick\u00fdch\u00a0n\u00e1lez\u016f a&nbsp;mo\u017enost spravedliv\u011bj\u0161\u00edho posouzen\u00ed t\u00e9to nej\u010dast\u011bj\u0161\u00ed choroby z&nbsp;povol\u00e1n\u00ed. Filozofie\u00a0elektrodiagnostiky\u00a0SKT\u00a0vych\u00e1z\u00ed z&nbsp;n\u00e1sleduj\u00edc\u00edch p\u0159edpoklad\u016f.\u00a0\u0158adou\u00a0klinicko-elektrofyziologick\u00fdch\u00a0studi\u00ed zab\u00fdvaj\u00edc\u00edch se\u00a0SKT\u00a0bylo zji\u0161t\u011bno, \u017ee neexistuje tak dobr\u00fd jednotliv\u00fd\u00a0elektrofyziologick\u00fd\u00a0test ani jejich kombinace, kter\u00fd by spr\u00e1vn\u011b ur\u010dil v\u0161echny nemocn\u00e9 se klinick\u00fdm\u00a0SKT\u00a0a vylou\u010dil ka\u017ed\u00e9ho\u00a0asymptomatick\u00e9ho\u00a0(Eisen, 1993). Nejsme pomoc\u00ed\u00a0elektrofyziologick\u00fdch\u00a0test\u016f schopni nal\u00e9zt skupinu zcela &#8222;zdrav\u00fdch jedinc\u016f&#8220; a&nbsp;zpomalen\u00e9 veden\u00ed p\u0159es\u00a0karp\u00e1ln\u00ed\u00a0tunel je patrn\u011b mo\u017eno spojit u&nbsp;n\u011bkter\u00fdch lid\u00ed s&nbsp;pojmem pln\u00e9ho zdrav\u00ed.\u00a0Elektrofyziologick\u00e9\u00a0testy\u00a0nekoreluj\u00ed\u00a0\u00fazce se klinick\u00fdmi projevy, ale jsou objektivn\u00ed, nez\u00e1visl\u00e9 na subjektivn\u00edch pot\u00ed\u017e\u00edch a&nbsp;spolupr\u00e1ci nemocn\u00fdch, tak\u017ee jsou pova\u017eov\u00e1ny za adekv\u00e1tn\u00ed metodu p\u0159i&nbsp;stanovov\u00e1n\u00ed z\u00e1va\u017enosti posti\u017een\u00ed nervu v&nbsp;p\u0159\u00edpad\u011b od\u0161kod\u0148ovac\u00edho \u0159\u00edzen\u00ed.\u00a0Elektrodiagnostika\u00a0SKT\u00a0je zalo\u017eena p\u0159edev\u0161\u00edm na hodnocen\u00ed rychlosti veden\u00ed senzitivn\u00edch a&nbsp;motorick\u00fdch vl\u00e1ken n.\u00a0medianus\u00a0p\u0159es\u00a0karp\u00e1ln\u00ed\u00a0\u00fa\u017einu, proto\u017ee jde p\u0159ev\u00e1\u017en\u011b o\u00a0demyeliniza\u010dn\u00ed\u00a0typ po\u0161kozen\u00ed tohoto perifern\u00edho nervu. Stanoven\u00ed abnorm\u00e1ln\u00edch hodnot veden\u00ed vych\u00e1z\u00ed z&nbsp;porovn\u00e1n\u00ed z\u00edskan\u00fdch parametr\u016f latenc\u00ed na stanovenou vzd\u00e1lenost nebo rychlosti veden\u00ed s&nbsp;veden\u00edm n.\u00a0medianus\u00a0u asymptomatick\u00fdch jedinc\u016f nebo porovn\u00e1n\u00edm s&nbsp;veden\u00edm v&nbsp;neposti\u017een\u00e9m \u00faseku vlastn\u00edho druhostrann\u00e9ho n.\u00a0medianus\u00a0nebo s&nbsp;veden\u00edm v&nbsp;jin\u00fdch neposti\u017een\u00fdch nervech t\u00e9\u017ee ruky (n. ulnaris nebo radialis). Z\u00e1kladn\u00ed podm\u00ednkou m\u011b\u0159en\u00ed je p\u0159\u00edsn\u00e9 dodr\u017een\u00ed technick\u00fdch parametr\u016f, aby bylo dosa\u017eeno co nejmen\u0161\u00edho rozptylu nam\u011b\u0159en\u00fdch hodnot a&nbsp;zv\u00fd\u0161ena tak diskrimina\u010dn\u00ed s\u00edla test\u016f. Jde p\u0159edev\u0161\u00edm o&nbsp;teplotu povrchu k\u016f\u017ee nad m\u011b\u0159enou oblast\u00ed, neutr\u00e1ln\u00ed polohu ruky v&nbsp;z\u00e1p\u011bst\u00ed (bez vol\u00e1rn\u00ed \u010di&nbsp;dorz\u00e1ln\u00ed flexe a&nbsp;dukc\u00ed), standardn\u00ed ulo\u017een\u00ed elektrod a&nbsp;standardn\u00ed m\u011b\u0159en\u00ed vzd\u00e1lenost\u00ed. Vlastn\u00ed proveden\u00ed\u00a0elektrofyziologick\u00e9ho\u00a0vy\u0161et\u0159en\u00ed a&nbsp;vyhodnocen\u00ed nam\u011b\u0159en\u00fdch hodnot u&nbsp;konduk\u010dn\u00edch studi\u00ed je tedy mo\u017eno rozd\u011blit do n\u00e1sleduj\u00edc\u00edch skupin 1. M\u011b\u0159en\u00ed absolutn\u00ed rychlosti veden\u00ed nervem (v&nbsp;m\/s) nebo m\u011b\u0159en\u00ed latence za\u010d\u00e1tku \u010di&nbsp;vrcholu ak\u010dn\u00edho potenci\u00e1lu (ud\u00e1van\u00e9 v&nbsp;ms). Za abnormn\u00ed se pova\u017euj\u00ed hodnoty, kter\u00e9 p\u0159esahuj\u00ed norm\u00e1ln\u00ed limity o&nbsp;2 SD. co\u017e pou\u017e\u00edv\u00e1 v\u011bt\u0161ina laborato\u0159\u00ed. Oproti volb\u011b 2,5 nebo 3 SD to znamen\u00e1, \u017ee jde o&nbsp;test senzitivn\u011bj\u0161\u00ed, ale m\u00e9n\u011b specifick\u00fd (v\u00edce vy\u0161et\u0159en\u00fdch jedinc\u016f bude m\u00edt abnormn\u00ed elektrofyziologick\u00e9 n\u00e1lezy, bude mezi nimi i&nbsp;mal\u00e9 procento zdrav\u00fdch jedinc\u016f, ale nep\u0159ehl\u00e9dne se \u017e\u00e1dn\u00e1 ani mal\u00e1 abnormita). Normativn\u00ed data jsou z\u00edsk\u00e1v\u00e1na ze souboru zdrav\u00fdch osob. 2. Srovn\u00e1n\u00ed nam\u011b\u0159en\u00fdch hodnot p\u0159i&nbsp;vy\u0161et\u0159en\u00ed n.\u00a0medianus\u00a0s parametry veden\u00ed ostatn\u00edch (neposti\u017een\u00fdch) nerv\u016f stejn\u00e9 ruky. Tento postup sebou nese riziko, \u017ee nejde o&nbsp;neposti\u017een\u00e9 nervy (co\u017e dop\u0159edu \u010dasto nev\u00edme) a&nbsp;porovn\u00e1n\u00ed m\u016f\u017ee v\u00e9st k&nbsp;fale\u0161n\u011b negativn\u00edmu v\u00fdsledku (nap\u0159.&nbsp;p\u0159i&nbsp;polyneuropatii, jin\u00e9m \u00fa\u017einov\u00e9m syndromu, po&nbsp;poran\u011bn\u00ed nervu apod.). Jeho velkou v\u00fdhodou je v\u00fdrazn\u00e9 sn\u00ed\u017een\u00ed rozptylu z&nbsp;odstran\u011bn\u00ed interindividu\u00e1ln\u00ed variability. To zvy\u0161uje jeho senzitivitu a&nbsp;diskrimina\u010dn\u00ed schopnost (specificitu). 3. Srovn\u00e1n\u00ed nam\u011b\u0159en\u00fdch hodnot s&nbsp;hodnotami stejn\u00fdch test\u016f na kontralater\u00e1ln\u00ed kon\u010detin\u011b. Riziko i&nbsp;v\u00fdhody jsou stejn\u00e9 jako u&nbsp;p\u0159ede\u0161l\u00e9ho bodu. 4. Porovn\u00e1n\u00ed parametr\u016f veden\u00ed proxim\u00e1ln\u00edho a&nbsp;dist\u00e1ln\u00edho \u00faseku n.\u00a0medianus\u00a0(nap\u0159.&nbsp;veden\u00ed na p\u0159edlokt\u00ed s&nbsp;veden\u00edm od z\u00e1p\u011bst\u00ed k&nbsp;prstu \u010di&nbsp;tenaru nebo veden\u00ed p\u0159es\u00a0karp\u00e1ln\u00ed\u00a0tunel s&nbsp;veden\u00edm v&nbsp;dist\u00e1ln\u011bj\u0161\u00edm \u00faseku senzitivn\u00edho nervu). To umo\u017en\u00ed v\u00fdpo\u010det index\u016f, kter\u00e9 se porovn\u00e1vaj\u00ed s&nbsp;normou. Do t\u00e9to skupiny zp\u016fsobu m\u011b\u0159en\u00ed pat\u0159\u00ed tak\u00e9 vyhodnocen\u00ed veden\u00ed v&nbsp;jednotliv\u00fdch kr\u00e1tk\u00fdch \u00fasec\u00edch (1-2 cm) nervu (inching), p\u0159i&nbsp;kter\u00e9m lze zjistit zpomalen\u00ed veden\u00ed pr\u00e1v\u011b v&nbsp;m\u00edst\u011b komprese oproti m\u00edst\u016fm proxim\u00e1ln\u011bj\u0161\u00edm \u010di&nbsp;dist\u00e1ln\u011bj\u0161\u00edm. Tato technika je v\u0161ak \u010dasov\u011b i&nbsp;technicky n\u00e1ro\u010dn\u00e1. 5. Vy\u0161et\u0159en\u00ed sval\u016f tenaru a&nbsp;event. dal\u0161\u00edch sval\u016f jehlovou\u00a0EMG\u00a0dopl\u0148uje v\u00fd\u0161e uveden\u00e9 konduk\u010dn\u00ed studie a&nbsp;slou\u017e\u00ed k&nbsp;odli\u0161en\u00ed jin\u00fdch chorob perifern\u00edch nerv\u016f s&nbsp;podobnou symptomatologi\u00ed (radikulopatie, proxim\u00e1ln\u011bj\u0161\u00ed l\u00e9ze n.\u00a0medianus, polyneuropatie, plexopatie aj.). Vzhledem k&nbsp;tomu, \u017ee u&nbsp;n\u00e1s ale i&nbsp;jin\u00fdch zem\u00edch , jak ji\u017e bylo zm\u00edn\u011bno, neexistuje jednotn\u00e1 metodika vy\u0161et\u0159en\u00ed, jsou n\u00e1lezy jednotliv\u00fdch laborato\u0159\u00ed t\u011b\u017eko navz\u00e1jem srovnateln\u00e9 co do t\u00ed\u017ee poruchy (nap\u0159.&nbsp;nastaven\u00ed m\u00edry abnorm\u00e1ln\u00edho n\u00e1lezu na 2, 2&nbsp;1\/2 nebo 3 SD) a&nbsp;n\u011bkdy mohou odli\u0161n\u00e9 metody doj\u00edt u&nbsp;t\u00e9ho\u017e jedince dokonce ke kvalitativn\u011b odli\u0161n\u00fdm z\u00e1v\u011br\u016fm (n\u00e1lez podporuj\u00edc\u00ed diagn\u00f3zu v&nbsp;jedn\u00e9 laborato\u0159i nesv\u011bd\u010d\u00ed pro tuto chorobu v&nbsp;laborato\u0159i jin\u00e9). P\u0159edkl\u00e1dan\u00fd n\u00e1vrh standardu vy\u0161et\u0159en\u00ed\u00a0SKT\u00a0vych\u00e1z\u00ed z&nbsp;n\u00e1vrhu neurofyziologick\u00e9ho pracovi\u0161t\u011b v&nbsp;Uppsale (Stalberg a&nbsp;spol.) s&nbsp;n\u011bkter\u00fdmi men\u0161\u00edmi \u00fapravami, kter\u00e9 nenaru\u0161\u00ed dobrou komunikovatelnost mezi laborato\u0159emi a&nbsp;mezi\u00a0EMG\u00a0laborato\u0159\u00ed a&nbsp;konzumenty jejich n\u00e1lez\u016f- nap\u0159.&nbsp;navrhovanou teplotu k\u016f\u017ee nad 280 C pova\u017eujeme za n\u00edzkou a&nbsp;ve v\u011bt\u0161in\u011b laborato\u0159\u00ed se doporu\u010duje nad 320. T\u00edm op\u011bt sn\u00ed\u017e\u00edme variabilitu v\u00fdsledk\u016f. Nicm\u00e9n\u011b v&nbsp;z\u00e1jmu sbl\u00ed\u017een\u00ed standard\u016f se sna\u017e\u00edme p\u016fvodn\u00edmu sch\u00e9matu vy\u0161et\u0159en\u00ed co nejv\u00edce p\u0159ibl\u00ed\u017eit. Navrhujeme proto n\u00e1sleduj\u00edc\u00ed standardn\u00ed vy\u0161et\u0159en\u00ed u\u00a0SKT. P\u0159i&nbsp;jeho tvorb\u011b jsme si uv\u011bdomovali, \u017ee to nen\u00ed ide\u00e1ln\u00ed \u0159e\u0161en\u00ed, je to v\u00fdsledek diskuse a&nbsp;vz\u00e1jemn\u00e9 dohody mezi laborato\u0159emi u&nbsp;n\u00e1s s&nbsp;p\u0159ihl\u00e9dnut\u00edm k&nbsp;praxi v&nbsp;evropsk\u00fdch a&nbsp;dal\u0161\u00edch zem\u00edch. P\u016fvodn\u00ed n\u00e1vrh byl postoupen v\u011bt\u0161in\u011b na\u0161ich\u00a0EMG\u00a0laborato\u0159\u00ed, kter\u00e9 se k&nbsp;n\u011bmu vyj\u00e1d\u0159ily. Podm\u00ednky a&nbsp;metodika vy\u0161et\u0159en\u00ed nervov\u00e9 vodivosti Nastaven\u00ed\u00a0EMG\u00a0p\u0159\u00edstroje: filtry 20-10000 Hz, citlivost 500uV\/d\u00edlek, rychlost posunu paprsku 2 ms\/d\u00edlek. D\u00e9lka pravo\u00fahl\u00e9ho stimulu 0,2 ms. Pacient p\u0159i&nbsp;vy\u0161et\u0159en\u00ed sed\u00ed nebo le\u017e\u00ed na z\u00e1dech. Horn\u00ed kon\u010detina p\u0159i&nbsp;m\u011b\u0159en\u00ed vzd\u00e1lenost\u00ed mezi m\u00edsty stimulace a&nbsp;sn\u00edm\u00e1n\u00ed i&nbsp;p\u0159i&nbsp;vlastn\u00edm vy\u0161et\u0159en\u00ed by m\u011bla b\u00fdt v&nbsp;supinaci tak, aby osa p\u0159edlokt\u00ed- dla\u0148 byla p\u0159\u00edm\u00e1 jak v&nbsp;latero-later\u00e1ln\u00edm tak i&nbsp;p\u0159edozadn\u00edm sm\u011bru. Tuto pozici je t\u0159eba dodr\u017eovat po&nbsp;celou dobu vy\u0161et\u0159en\u00ed i&nbsp;p\u0159i&nbsp;m\u011b\u0159en\u00ed vzd\u00e1lenost\u00ed mezi m\u00edsty stimulace a&nbsp;sn\u00edm\u00e1n\u00ed. Prsty budou relaxovan\u00e9 a&nbsp;m\u00edrn\u011b pokr\u010den\u00e9 (svaly ruky nejsou kontrahovan\u00e9) s&nbsp;proxim\u00e1ln\u00edmi falangami v&nbsp;ose dlan\u011b. Ko\u017en\u00ed teplotu je t\u0159eba m\u011b\u0159it v&nbsp;proxim\u00e1ln\u00ed \u010d\u00e1sti dlan\u011b mezi tenarem a&nbsp;hypotenarem nad karp\u00e1ln\u00edm tunelem a&nbsp;m\u011bla by dosahovat nejm\u00e9n\u011b 32&nbsp;0 C v&nbsp;pr\u016fb\u011bhu cel\u00e9ho vy\u0161et\u0159en\u00ed (co\u017e m\u016f\u017ee b\u00fdt sv\u00edzeln\u00e9 zvl\u00e1\u0161t\u011b v&nbsp;zimn\u00edm obdob\u00ed a&nbsp;u&nbsp;lid\u00ed s&nbsp;hyperhidr\u00f3zou). Nen\u00ed-li mo\u017enost kontinu\u00e1ln\u00edho m\u011b\u0159en\u00ed a&nbsp;nebylo-li v&nbsp;pr\u016fb\u011bhu vy\u0161et\u0159en\u00ed t\u0159eba ruku nah\u0159\u00edvat, pak sta\u010d\u00ed zm\u011b\u0159it teplotu na za\u010d\u00e1tku a&nbsp;na konci vy\u0161et\u0159en\u00ed. Jestli bylo nutno kon\u010detinu v&nbsp;pr\u016fb\u011bhu vy\u0161et\u0159en\u00ed nah\u0159\u00edvat, pak je t\u0159eba teplotu m\u011b\u0159it opakovan\u011b v&nbsp;pr\u016fb\u011bhu cel\u00e9ho vy\u0161et\u0159en\u00ed. Pokud by na konci vy\u0161et\u0159en\u00ed byla teplota ni\u017e\u0161\u00ed ne\u017e 32&nbsp;0 C, nen\u00ed mo\u017eno vy\u0161et\u0159en\u00ed pova\u017eovat za validn\u00ed. Veden\u00ed motorick\u00fdmi vl\u00e1kny obecn\u011b Intenzita stimula\u010dn\u00edho proudu by m\u011bla dosahovat jen 10-25% nad hodnotu nutnou k&nbsp;dosa\u017een\u00ed maxim\u00e1ln\u00ed amplitudy odpov\u011bdi. Um\u00edst\u011bn\u00ed aktivn\u00ed z\u00e1znamov\u00e9 elektrody je t\u0159eba volit tak, aby se dos\u00e1hlo negativn\u00edho inici\u00e1ln\u00edho odstupu suma\u010dn\u00edho motorick\u00e9ho ak\u010dn\u00edho potenci\u00e1lu (CMAP)- tedy nahoru od baz\u00e1ln\u00ed linie. Pokud se to nezda\u0159\u00ed, mus\u00ed b\u00fdt alespo\u0148 amplituda CMAP nad b\u0159\u00ed\u0161kem m.APB co nejvy\u0161\u0161\u00ed oproti jin\u00fdm m\u00edst\u016fm na tenaru. Latence bude m\u011b\u0159ena k&nbsp;za\u010d\u00e1tku odstupu CMAP od z\u00e1kladn\u00ed linie a&nbsp;to i&nbsp;v&nbsp;p\u0159\u00edpad\u011b (vz\u00e1cn\u011bji), \u017ee bude p\u0159i&nbsp;stimulaci na z\u00e1p\u011bst\u00ed pozitivn\u00ed (tj.&nbsp;sm\u011b\u0159ovat dol\u016f od z\u00e1kladn\u00ed linie). Hodnocen\u00ed t\u00e9to latence je nutno prov\u00e1d\u011bt p\u0159i&nbsp;nastaven\u00ed citlivosti p\u0159\u00edstroje (gain) 0,5 mV\/d\u00edlek a&nbsp;rychlosti p\u0159eb\u011bhu 2 ms\/d\u00edlek. Amplituda CMAP bude m\u011b\u0159ena mezi baz\u00e1ln\u00ed lini\u00ed a&nbsp;vrcholem prvn\u00edho negativn\u00edho potenci\u00e1lu. Pozn.: Pokud se nepoda\u0159\u00ed m\u011bn\u011bn\u00edm polohy sn\u00edmac\u00ed elektrody na tenaru dos\u00e1hnout p\u0159i&nbsp;proxim\u00e1ln\u00ed stimulaci inici\u00e1ln\u00edho negativn\u00edho odstupu, pak je t\u0159eba myslet na M-G anastom\u00f3zu a&nbsp;vy\u0161et\u0159en\u00ed tomu p\u0159izp\u016fsobit- tato situace m\u016f\u017ee nastat v&nbsp;15-30% p\u0159\u00edpad\u016f (kdy\u017e je anastom\u00f3za p\u0159\u00edtomna, pak b\u00fdv\u00e1 v&nbsp;68% oboustrann\u011b). M\u016f\u017ee na ni tak\u00e9 upozornit neobvykle vysok\u00e1 rychlost veden\u00ed n.medianus\u00a0na p\u0159edlokt\u00ed a&nbsp;odli\u0161n\u00fd tvar CMAP p\u0159i&nbsp;stimulaci na z\u00e1p\u011bst\u00ed a&nbsp;v&nbsp;lokti. Veden\u00ed motorick\u00fdmi vl\u00e1kny n.\u00a0medianus\u00a0(obr. 1 a&nbsp;2) Sn\u00edmac\u00ed elektrody Aktivn\u00ed elektroda: b\u0159\u00ed\u0161ko m.APB (p\u0159ibli\u017en\u011b v&nbsp;polovin\u011b vzd\u00e1lenosti mezi \u00faponem \u0161lachy m.FCR a&nbsp;metakarpofalange\u00e1ln\u00edm kloubem palce). Referen\u010dn\u00ed elektroda: interfalange\u00e1ln\u00ed kloub na later\u00e1ln\u00ed stran\u011b palce. Zemn\u00edc\u00ed elektroda Nejl\u00e9pe okrouhl\u00e1 kovov\u00e1 elektroda na dorzu z\u00e1p\u011bst\u00ed, upevn\u011bn\u00e1 lep\u00edc\u00ed p\u00e1skou nebo p\u00e1skov\u00e1 elektroda obto\u010den\u00e1 kolem r\u00fdhy karpometakarp\u00e1ln\u00ed. Vzd\u00e1lenost mezi stimula\u010dn\u00ed a&nbsp;sn\u00edmac\u00ed elektrodou 8 cm m\u011b\u0159eno lomen\u011b- za\u010d\u00edt od aktivn\u00ed z\u00e1znamov\u00e9 elektrody do st\u0159edu dist\u00e1ln\u00ed\u00a0karp\u00e1ln\u00ed\u00a0\u0159asy a&nbsp;odtud proxim\u00e1ln\u00edm sm\u011brem ve st\u0159edn\u00ed \u010d\u00e1\u0159e a\u017e k&nbsp;dosa\u017een\u00ed celkov\u00e9 vzd\u00e1lenosti 8 cm (v&nbsp;p\u0159\u00edpad\u011b pou\u017eit\u00ed p\u00e1skov\u00e9 zemn\u00edc\u00ed elektrody nutno prov\u00e9st toto m\u011b\u0159en\u00ed p\u0159ed jej\u00edm nalo\u017een\u00edm) za neutr\u00e1ln\u00ed polohy ruky jak pops\u00e1no v\u00fd\u0161e. Zm\u011b\u0159it vzd\u00e1lenost mezi katodou stimula\u010dn\u00ed elektrody v&nbsp;lokti a&nbsp;katodou stimula\u010dn\u00ed elektrody na z\u00e1p\u011bst\u00ed k&nbsp;v\u00fdpo\u010dtu rychlosti veden\u00ed motorick\u00fdmi vl\u00e1kny n.\u00a0medianus\u00a0na p\u0159edlokt\u00ed. Stimula\u010dn\u00ed elektrody Stimulace na z\u00e1p\u011bst\u00ed: bipol\u00e1rn\u00ed stimula\u010dn\u00ed (komer\u010dn\u011b dostupn\u00e1) elektroda katodou p\u0159ilo\u017eenou na vym\u011b\u0159en\u00fd bod proxim\u00e1ln\u011b od z\u00e1p\u011bstn\u00ed r\u00fdhy mezi \u0161lachu m.FCR a&nbsp;m.PL ve vzd\u00e1lenosti 8 cm od aktivn\u00ed sn\u00edmac\u00ed elektrody um\u00edst\u011bn\u00e9 nad b\u0159\u00ed\u0161kem m.APB. Anoda stimula\u010dn\u00ed elektrody se um\u00edst\u00ed tak\u00e9 nad kmen n.medianus\u00a0proxim\u00e1ln\u011b od katody ( nesm\u00ed se kl\u00e1st nad kmen n. ulnaris). Stimulace v&nbsp;lokti: katoda um\u00edst\u011bna na vol\u00e1rn\u00ed plo\u0161e loketn\u00ed krajiny mezi \u0161lachou m.biceps a&nbsp;vnit\u0159n\u00edm epikondylem v&nbsp;m\u00edst\u011b t\u011bsn\u011b later\u00e1ln\u011b od hmatn\u00e9 a. brachialis. Anoda je um\u00edst\u011bna proxim\u00e1ln\u011b od katody nad kmenem n.medianus\u00a0(nem\u011bla by se dostat nad n. ulnaris). Veden\u00ed motorick\u00fdmi vl\u00e1kny n.ulnaris (obr. 3 a&nbsp;4) Sn\u00edmac\u00ed elektrody Aktivn\u00ed elektroda : um\u00edstit na k\u016f\u017ei nad b\u0159\u00ed\u0161ko m.ADM na hypotenaru uprost\u0159ed mezi metakarpofalange\u00e1ln\u00edm kloubem a&nbsp;os pisiforme. Referen\u010dn\u00ed elektroda: nad prost\u0159edn\u00ed \u010dl\u00e1nek V.prstu. Stimula\u010dn\u00ed elektrody na z\u00e1p\u011bst\u00ed Katoda: 8 cm proxim\u00e1ln\u011b od aktivn\u00ed sn\u00edmac\u00ed elektrody nad kmenem n.ulnaris na z\u00e1p\u011bst\u00ed. Anoda: proxim\u00e1ln\u011bji od katody nad kmenem n.ulnaris . Zemn\u00edc\u00ed elektroda: nejl\u00e9pe okrouhl\u00e1 kovov\u00e1 elektroda na dorzu z\u00e1p\u011bst\u00ed, upevn\u011bn\u00e1 lep\u00edc\u00ed p\u00e1skou nebo p\u00e1skov\u00e1 elektroda obto\u010den\u00e1 kolem r\u00fdhy karpometakarp\u00e1ln\u00ed. Stimula\u010dn\u00ed elektrody v&nbsp;lokti Katoda: um\u00edst\u011bna 3 cm dist\u00e1ln\u011bji od spojnice mezi olekranem a&nbsp;vnit\u0159n\u00edm epikodylem nad kmenem n.ulnaris. Anoda : proxim\u00e1ln\u011bji od katody nad kmenem stimulovan\u00e9ho nervu. M\u011b\u0159en\u00ed dist\u00e1ln\u00ed motorick\u00e9 latence. Vzd\u00e1lenost mezi stimula\u010dn\u00ed a&nbsp;sn\u00edmac\u00ed elektrodou m\u011b\u0159\u00edme nad kmenem n.ulnaris (od st\u0159edu aktivn\u00ed sn\u00edmac\u00ed elektrody um\u00edst\u011bn\u00e9 nad b\u0159\u00ed\u0161kem m.ADM ke st\u0159edu katody stimula\u010dn\u00ed elektrody) na uln\u00e1rn\u00ed stran\u011b z\u00e1p\u011bst\u00ed. D\u00e1le se zm\u011b\u0159\u00ed vzd\u00e1lenost mezi stimula\u010dn\u00edm m\u00edstem na lokti a&nbsp;na z\u00e1p\u011bst\u00ed k&nbsp;v\u00fdpo\u010dtu rychlosti veden\u00ed motorick\u00e9ho veden\u00ed na p\u0159edlokt\u00ed. Veden\u00ed senzitivn\u00edmi vl\u00e1kny Vy\u0161et\u0159en\u00ed se provede antidromn\u00ed (aktivn\u00ed z\u00e1znamov\u00e1 elektroda je um\u00edst\u011bna proxim\u00e1ln\u011b od referen\u010dn\u00ed) nebo ortodromn\u00ed technikou (aktivn\u00ed z\u00e1znamov\u00e1 elektroda je um\u00edst\u011bna dist\u00e1ln\u011b od referen\u010dn\u00ed). Nastaven\u00ed p\u0159\u00edstroje: rychlost p\u0159eb\u011bhu 1-2 ms\/d\u00edlek a&nbsp;citlivost (gain) 5-10 uV\/d\u00edlek. Ke stimulaci se pou\u017e\u00edv\u00e1 b\u011b\u017en\u00e1 povrchov\u00e1 bipol\u00e1rn\u00ed elektroda, pozice ruky je stejn\u00e1 jako p\u0159i&nbsp;m\u011b\u0159en\u00ed veden\u00ed motorick\u00fdmi vl\u00e1kny. Sn\u00edmac\u00ed elektroda je p\u0159i&nbsp;antidromn\u00ed technice prstencov\u00e1 , vzd\u00e1lenost mezi st\u0159edem aktivn\u00ed a&nbsp;referen\u010dn\u00ed elektrody je 2,5 cm, p\u0159i&nbsp;\u010dem\u017e aktivn\u00ed sn\u00edmac\u00ed elektroda je um\u00edst\u011bna na bazi m\u011b\u0159en\u00e9ho prstu p\u0159i&nbsp;antidromn\u00ed technice a&nbsp;nad kmenem n.\u00a0medianus\u00a0na dist\u00e1ln\u00edm p\u0159edlokt\u00ed p\u0159i&nbsp;technice ortodromn\u00ed. P\u0159i&nbsp;ortodromn\u00ed technice se jako sn\u00edmac\u00ed elektroda pou\u017eije b\u011b\u017en\u00e1 stimula\u010dn\u00ed bipol\u00e1rn\u00ed elektroda s&nbsp;plst\u011bn\u00fdmi vlo\u017ekami obd\u00e9ln\u00edkov\u00e9ho tvaru. Ke stimulaci pou\u017eijeme rovn\u011b\u017e bipol\u00e1rn\u00ed povrchovou elektrodu, kterou um\u00edst\u00edme p\u0159i&nbsp;ortodromn\u00edm veden\u00ed na m\u011b\u0159en\u00e9m prstu tak, \u017ee katoda je na later\u00e1ln\u00ed stran\u011b prstu p\u0159i&nbsp;jeho bazi a&nbsp;anoda dist\u00e1ln\u011bji. Rychlost veden\u00ed je t\u0159eba vypo\u010d\u00edtat z&nbsp;latence m\u011b\u0159en\u00e9 k&nbsp;za\u010d\u00e1tku SNAP , amplitudu od prvn\u00edho pozitivn\u00edho vrcholu p\u0159edch\u00e1zej\u00edc\u00edho nejvy\u0161\u0161\u00ed negativn\u00ed vlnu, k&nbsp;vrcholu t\u00e9to negativn\u00ed vlny (\u0161pi\u010dka-\u0161pi\u010dka). Pokud prvn\u00ed pozitivn\u00ed vlna chyb\u00ed, pak m\u011b\u0159en\u00ed prov\u00e9st od baz\u00e1ln\u00ed linie k&nbsp;nejvy\u0161\u0161\u00edmu negativn\u00edmu vrcholu. Zemn\u00edc\u00ed elektroda je um\u00edst\u011bna podobn\u011b, jako je pops\u00e1no u&nbsp;m\u011b\u0159en\u00ed motorick\u00e9ho veden\u00ed. Veden\u00ed senzitivn\u00edmi vl\u00e1kny n.\u00a0medianus\u00a0(obr. 5 a&nbsp;6) Antidromn\u00ed technika: Stimula\u010dn\u00ed elektrody Katoda stimula\u010dn\u00ed elektrody je um\u00edst\u011bna nad kmenem n.medianus\u00a0na z\u00e1p\u011bst\u00ed ve vzd\u00e1lenosti 14 cm od aktivn\u00ed sn\u00edmac\u00ed elektrody pro II.-IV. prst a&nbsp;12 cm pro I. prst . Anoda je um\u00edst\u011bna 2,5 cm proxim\u00e1ln\u011bji rovn\u011b\u017e nad kmenem n.\u00a0medianus. Sn\u00edmac\u00ed elektrody Prstencov\u00e1 aktivn\u00ed povrchov\u00e1 elektroda je um\u00edst\u011bna na bazi I.-IV.prstu a&nbsp;referen\u010dn\u00ed o&nbsp;2,5 cm dist\u00e1ln\u011bji na t\u00e9m\u017ee prstu. Zemn\u00edc\u00ed elektroda Nejl\u00e9pe okrouhl\u00e1 kovov\u00e1 elektroda na dorzu z\u00e1p\u011bst\u00ed, upevn\u011bn\u00e1 lep\u00edc\u00ed p\u00e1skou nebo p\u00e1skov\u00e1 elektroda um\u00edst\u011bn\u00e1 mezi stimula\u010dn\u00edmi a&nbsp;sn\u00edmac\u00edmi elektrodami. Ortodromn\u00ed technika (obr. 7) Stimula\u010dn\u00ed elektrody Katoda stimula\u010dn\u00ed elektrody je um\u00edst\u011bna na later\u00e1ln\u00ed stran\u011b II.-IV. prstu p\u0159i&nbsp;jeho bazi a&nbsp;anoda 2,5 cm dist\u00e1ln\u011bji. Sn\u00edmac\u00ed elektrody Jako sn\u00edmac\u00ed elektroda se pou\u017eije b\u011b\u017en\u00e1 stimula\u010dn\u00ed bipol\u00e1rn\u00ed elektroda s&nbsp;plst\u011bn\u00fdmi vlo\u017ekami obd\u00e9ln\u00edkov\u00e9ho tvaru, kterou um\u00edst\u00edme nad kmen n.\u00a0medianus\u00a0na z\u00e1p\u011bst\u00ed tak, \u017ee aktivn\u00ed elektroda je ve vzd\u00e1lenosti 14 cm od katody stimula\u010dn\u00ed elektrody a&nbsp;referen\u010dn\u00ed je 2,5 cm proxim\u00e1ln\u011bji. Zemn\u00edc\u00ed elektroda Nejl\u00e9pe okrouhl\u00e1 kovov\u00e1 elektroda na dorzu z\u00e1p\u011bst\u00ed, upevn\u011bn\u00e1 lep\u00edc\u00ed p\u00e1skou nebo p\u00e1skov\u00e1 elektroda um\u00edst\u011bn\u00e1 mezi stimula\u010dn\u00edmi a&nbsp;sn\u00edmac\u00edmi elektrodami, bl\u00ed\u017ee ke sn\u00edmac\u00edm. Veden\u00ed senzitivn\u00edmi vl\u00e1kny n. ulnaris Antidromn\u00ed technika (obr. 8 a&nbsp;9) Stimula\u010dn\u00ed elektrody Katoda stimula\u010dn\u00ed elektrody je um\u00edst\u011bna nad kmenem n.ulnaris na z\u00e1p\u011bst\u00ed ve vzd\u00e1lenosti 14 cm od aktivn\u00ed sn\u00edmac\u00ed elektrody pro IV.-V. prst. Anoda je um\u00edst\u011bna 2,5 cm proxim\u00e1ln\u011bji rovn\u011b\u017e nad kmenem n. ulnaris. Sn\u00edmac\u00ed elektrody Prstencov\u00e1 aktivn\u00ed povrchov\u00e1 elektroda je um\u00edst\u011bna na bazi IV.-V. prstu a&nbsp;referen\u010dn\u00ed o&nbsp;2,5 cm dist\u00e1ln\u011bji na t\u00e9m\u017ee prstu. Zemn\u00edc\u00ed elektroda Okrouhl\u00e1 kovov\u00e1 elektroda na dorzu z\u00e1p\u011bst\u00ed, upevn\u011bn\u00e1 lep\u00edc\u00ed p\u00e1skou nebo p\u00e1skov\u00e1 elektroda um\u00edst\u011bn\u00e1 mezi stimula\u010dn\u00edmi a&nbsp;sn\u00edmac\u00edmi elektrodami. Ortodromn\u00ed technika (obr. 10) Stimula\u010dn\u00ed elektrody Katoda stimula\u010dn\u00ed elektrody je um\u00edst\u011bna na bazi IV. prstu z&nbsp;medi\u00e1ln\u00ed strany a&nbsp;p\u0159i&nbsp;stimulaci V. prstu z&nbsp;later\u00e1ln\u00ed nebo medi\u00e1ln\u00ed strany a&nbsp;referen\u010dn\u00ed o&nbsp;2,5 cm dist\u00e1ln\u011bji na t\u00e9m\u017ee prstu. Sn\u00edmac\u00ed elektrody Katoda sn\u00edmac\u00ed elektrody je um\u00edst\u011bna nad kmenem n.ulnaris na z\u00e1p\u011bst\u00ed ve vzd\u00e1lenosti 14 cm od katody stimula\u010dn\u00ed elektrody pro IV.-V. prst. Anoda je um\u00edst\u011bna 2,5 cm proxim\u00e1ln\u011bji rovn\u011b\u017e nad kmenem n. ulnaris. Zemn\u00edc\u00ed elektroda Okrouhl\u00e1 kovov\u00e1 elektroda na dorzu z\u00e1p\u011bst\u00ed, upevn\u011bn\u00e1 lep\u00edc\u00ed p\u00e1skou nebo p\u00e1skov\u00e1 elektroda um\u00edst\u011bn\u00e1 mezi stimula\u010dn\u00edmi a&nbsp;sn\u00edmac\u00edmi elektrodami, bl\u00ed\u017ee k&nbsp;elektrod\u00e1m sn\u00edmac\u00edm.. N\u00e1sleduj\u00edc\u00ed techniky jsou pou\u017e\u00edv\u00e1ny p\u0159i&nbsp;elektrofyziologick\u00e9m vy\u0161et\u0159ov\u00e1n\u00ed\u00a0SKT, ale nejsou povinnou sou\u010d\u00e1st\u00ed tohoto standardu Veden\u00ed sm\u00ed\u0161en\u00fdm nervem (transkarp\u00e1ln\u00ed veden\u00ed) n.\u00a0medianus\u00a0Vy\u0161et\u0159en\u00ed se provede antidromn\u00ed nebo ortodromn\u00ed technikou. Antidromn\u00ed technika (obr. 11): aktivn\u00ed z\u00e1znamov\u00e1 elektroda je um\u00edst\u011bna mezi 2.&nbsp;a&nbsp;3.&nbsp;metakarp\u00e1ln\u00ed kost\u00ed na dlani v&nbsp;polovin\u011b vzd\u00e1lenosti mezi dist\u00e1ln\u00ed\u00a0karp\u00e1ln\u00ed\u00a0\u0159asou a&nbsp;bazemi proxim\u00e1ln\u00edch falang prst\u016f, referen\u010dn\u00ed elektroda pak mezi 2.&nbsp;a&nbsp;3.&nbsp;metakarpem dist\u00e1ln\u011bji. Vzd\u00e1lenost mezi st\u0159edy obou z\u00e1znamov\u00fdch elektrod je 2,5 cm. Ke stimulaci se pou\u017e\u00edv\u00e1 b\u011b\u017en\u00e1 komer\u010dn\u00ed povrchov\u00e1 bipol\u00e1rn\u00ed stimula\u010dn\u00ed elektroda, pozice ruky je stejn\u00e1 jako p\u0159i&nbsp;m\u011b\u0159en\u00ed veden\u00ed motorick\u00fdmi vl\u00e1kny. Stimuluje se nad pr\u016fb\u011bhem n.\u00a0medianus\u00a0na vol\u00e1rn\u00ed plo\u0161e dist\u00e1ln\u00edho p\u0159edlokt\u00ed tak, \u017ee vzd\u00e1lenost st\u0159edu katody stimula\u010dn\u00ed elektrody je od st\u0159edu aktivn\u00ed z\u00e1znamov\u00e9 elektrody vzd\u00e1lena 8 cm. Zemn\u00edc\u00ed elektroda je um\u00edst\u011bna podobn\u011b jak pops\u00e1no u&nbsp;m\u011b\u0159en\u00ed motorick\u00e9ho veden\u00ed. Latence se m\u011b\u0159\u00ed od stimulus artefaktu po&nbsp;vrchol negativn\u00ed vlny ak\u010dn\u00edho potenci\u00e1lu. Ortodromn\u00ed technika (obr. 11): aktivn\u00ed z\u00e1znamov\u00e1 elektroda je um\u00edst\u011bna nad kmenem n.\u00a0medianus\u00a0na vol\u00e1rn\u00ed plo\u0161e dist\u00e1ln\u00edho p\u0159edlokt\u00ed, referen\u010dn\u00ed elektroda je 2,5 cm proxim\u00e1ln\u011bji. Ke stimulaci se pou\u017e\u00edv\u00e1 b\u011b\u017en\u00e1 bipol\u00e1rn\u00ed elektroda, jej\u00ed\u017e katodu um\u00edst\u00edme mezi 2.&nbsp;a&nbsp;3.&nbsp;metakarpem v&nbsp;polovin\u011b vzd\u00e1lenosti mezi dist\u00e1ln\u00ed\u00a0karp\u00e1ln\u00ed\u00a0\u0159asou a&nbsp;anodu 2,5 cm dist\u00e1ln\u011bji. Vzd\u00e1lenost mezi st\u0159edem katody a&nbsp;st\u0159edem aktivn\u00ed z\u00e1znamov\u00e9 elektrody je 8 cm. Zemn\u00edc\u00ed elektroda je um\u00edst\u011bna mezi stimula\u010dn\u00ed a&nbsp;sn\u00edmac\u00ed elektrodou, bl\u00ed\u017ee ke sn\u00edmac\u00ed. Transkarp\u00e1ln\u00ed veden\u00ed sm\u00ed\u0161en\u00fdm nervem- n.ulnaris Antidromn\u00ed technika ( obr. 12) Stimula\u010dn\u00ed elektrody Katoda stimula\u010dn\u00ed elektrody je nad kmenem n.ulnaris na z\u00e1p\u011bst\u00ed 8 cm od aktivn\u00ed sn\u00edmac\u00ed elektrody a&nbsp;anoda 2,5 cm proxim\u00e1ln\u011bji nad kmenem t\u00e9ho\u017e nervu. Sn\u00edmac\u00ed elektrody Aktivn\u00ed sn\u00edmac\u00ed elektroda je na dlani mezi IV.-V.metakarpem v&nbsp;polovin\u011b vzd\u00e1lenosti od mezi meziprstn\u00ed a&nbsp;z\u00e1p\u011bstn\u00ed r\u00fdhou, referen\u010dn\u00ed elektroda je 2,5 cm dist\u00e1ln\u011bji. Zemn\u00edc\u00ed elektroda Je um\u00edst\u011bna na dorzu ruky nebo p\u00e1skov\u00e1 elektroda mezi stimula\u010dn\u00edmi a&nbsp;sn\u00edmac\u00edmi elektrodami. Ortodromn\u00ed technika (obr. 12) Stimula\u010dn\u00ed elektrody Katoda stimula\u010dn\u00ed elektrody je na dlani mezi IV.-V.metakarpem v&nbsp;polovin\u011b vzd\u00e1lenosti od mezi meziprstn\u00ed a&nbsp;z\u00e1p\u011bstn\u00ed r\u00fdhou, anoda je 2,5 cm dist\u00e1ln\u011bji. Sn\u00edmac\u00ed elektrody Aktivn\u00ed sn\u00edmac\u00ed elektroda je nad kmenem n.ulnaris na z\u00e1p\u011bst\u00ed 8 cm od katody stimula\u010dn\u00ed elektrody a&nbsp;referen\u010dn\u00ed elektroda je 2,5 cm proxim\u00e1ln\u011bji nad kmenem t\u00e9ho\u017e nervu. Zemn\u00edc\u00ed elektroda Je um\u00edst\u011bna na dorzu ruky nebo p\u00e1skov\u00e1 elektroda mezi stimula\u010dn\u00edmi a&nbsp;sn\u00edmac\u00edmi elektrodami. Veden\u00ed senzitivn\u00edm\u00ed vl\u00e1kny n. radialis Antidromn\u00ed technika (obr. 13) Stimula\u010dn\u00ed elektrody Katoda stimula\u010dn\u00ed elektrody se um\u00edst\u00ed nad kmen n. radialis na radi\u00e1ln\u00ed plo\u0161e dist\u00e1ln\u00edho p\u0159edlokt\u00ed ve vzd\u00e1lenosti 12 cm od sn\u00edmac\u00ed aktivn\u00ed elektrody. Anoda je 2,5 cm proxim\u00e1ln\u011bji nad kmenem vy\u0161et\u0159ovan\u00e9ho nervu. Sn\u00edmac\u00ed elektrody Prstencov\u00e1 aktivn\u00ed povrchov\u00e1 elektroda se um\u00edst\u00ed na bazi I.prstu a&nbsp;referen\u010dn\u00ed elektroda 2,5 cm dist\u00e1ln\u011bji na t\u00e9m\u017ee prstu jako p\u0159i&nbsp;vy\u0161et\u0159ov\u00e1n\u00ed rychlosti veden\u00ed n.\u00a0medianus. Zemn\u00edc\u00ed elektroda Okrouhl\u00e1 kovov\u00e1 elektroda na dorzu z\u00e1p\u011bst\u00ed, upevn\u011bn\u00e1 lep\u00edc\u00ed p\u00e1skou nebo p\u00e1skov\u00e1 elektroda um\u00edst\u011bn\u00e1 mezi stimula\u010dn\u00edmi a&nbsp;sn\u00edmac\u00edmi elektrodami. Ortodromn\u00ed technika (obr. 13) Stimula\u010dn\u00ed elektrody Katoda stimula\u010dn\u00ed elektrody se um\u00edst\u00ed na dorz\u00e1ln\u00ed plochu baze I. prstu a&nbsp;anoda 2,5 cm dist\u00e1ln\u011bji. Sn\u00edmac\u00ed elektrody Aktivn\u00ed sn\u00edmac\u00ed povrchov\u00e1 elektroda se um\u00edst\u00ed nad kmen n. radialis na later\u00e1ln\u00ed plochu dist\u00e1ln\u00edho p\u0159edlokt\u00ed ve vzd\u00e1lenosti 12 cm od katody stimula\u010dn\u00ed elektrody. Referen\u010dn\u00ed je lokalizov\u00e1na 2,5 cm proxim\u00e1ln\u011bji. Zemn\u00edc\u00ed elektroda Okrouhl\u00e1 kovov\u00e1 elektroda na dorzu z\u00e1p\u011bst\u00ed, upevn\u011bn\u00e1 lep\u00edc\u00ed p\u00e1skou nebo p\u00e1skov\u00e1 elektroda um\u00edst\u011bn\u00e1 mezi stimula\u010dn\u00edmi a&nbsp;sn\u00edmac\u00edmi elektrodami. Standard\u00a0elektrofyziologick\u00e9ho\u00a0vy\u0161et\u0159en\u00ed p\u0159i&nbsp;podez\u0159en\u00ed na syndrom karp\u00e1ln\u00edho tunelu C\u00edl: stanoven\u00ed elektrofyziologick\u00e9 diagn\u00f3zy\u00a0SKT\u00a0st\u0159edn\u011b t\u011b\u017ek\u00e9ho stupn\u011b Postup vy\u0161et\u0159en\u00ed: 1. Stanoven\u00ed dist\u00e1ln\u00ed motorick\u00e9 latence (DML) n.\u00a0medianus\u00a02. Stanoven\u00ed rychlosti senzitivn\u00edho veden\u00ed (SCV) n.\u00a0medianus\u00a0ke II. nebo III. prstu 3. Stanoven\u00ed dist\u00e1ln\u00ed motorick\u00e9 latence (DML) n. ulnaris a&nbsp;senzitivn\u00edho veden\u00ed n. ulnaris k&nbsp;V. prstu. 3. Vy\u0161et\u0159en\u00ed m.APB jehlovou elektrodou (fakultativn\u011b) V&nbsp;p\u0159\u00edpad\u011b negativn\u00edch n\u00e1lez\u016f v\u00fd\u0161e uveden\u00fdch test\u016f v&nbsp;oblasti n.\u00a0medianus\u00a0(za pou\u017eit\u00ed limitn\u00ed hodnoty pomoc\u00ed 2 SD) lze pova\u017eovat diagn\u00f3zu\u00a0SKT\u00a0z hlediska n\u00e1rok\u016f na od\u0161kodn\u011bn\u00ed jako choroby z&nbsp;povol\u00e1n\u00ed za\u00a0elektrofyziologicky\u00a0neprok\u00e1zanou. Pozn.: V&nbsp;t\u00e9to skupin\u011b (tj.&nbsp;s&nbsp;norm\u00e1ln\u00edmi hodnotami veden\u00ed n.\u00a0medianus\u00a0p\u0159es\u00a0karp\u00e1ln\u00ed\u00a0tunel ) se mohou vz\u00e1cn\u011b objevit i&nbsp;nemocn\u00ed s&nbsp;typick\u00fdmi klinick\u00fdmi p\u0159\u00edznaky\u00a0SKT- v&nbsp;tom p\u0159\u00edpad\u011b je t\u0159eba klinicky stav znovu p\u0159ehodnotit a&nbsp;v&nbsp;p\u0159\u00edpad\u011b trvaj\u00edc\u00edho nal\u00e9hav\u00e9ho podez\u0159en\u00ed na STK prov\u00e9st ve druh\u00e9 f\u00e1zi roz\u0161\u00ed\u0159enou variantu vy\u0161et\u0159en\u00ed, kter\u00e1 bude zahrnovat: &#8211; rozd\u00edl latenc\u00ed senzitivn\u00edho veden\u00ed n.\u00a0medianus\u00a0a ulnaris ke IV. prstu &#8211; rozd\u00edl latenc\u00ed senzitivn\u00edho veden\u00ed n.\u00a0medianus\u00a0a ulnaris transkarp\u00e1ln\u011b &#8211; rozd\u00edl latenc\u00ed senzitivn\u00edho veden\u00ed n.\u00a0medianus\u00a0a radialis k&nbsp;I.prstu V&nbsp;p\u0159\u00edpad\u011b, \u017ee v\u0161echny v\u00fd\u0161e uveden\u00e9 testy jsou nad\u00e1le negativn\u00ed ve smyslu posti\u017een\u00ed n.\u00a0medianus\u00a0(co\u017e je krajn\u011b nepravd\u011bpodobn\u00e9) a&nbsp;klinick\u00fd obraz je nad\u00e1le siln\u011b suspektn\u00ed ze\u00a0SKT, pak je mo\u017eno zvolit je\u0161t\u011b dal\u0161\u00ed testy:_ * zhodnocen\u00ed pom\u011bru proximodist\u00e1ln\u00edho senzitivn\u00edho veden\u00ed senzitivn\u00edch vl\u00e1ken p\u0159es\u00a0karp\u00e1ln\u00ed\u00a0tunel ke III. prstu ( u&nbsp;zdrav\u00fdch jedinc\u016f je tento pom\u011br ve 100% (1,0 t.zn. \u017ee proxim\u00e1ln\u00ed \u00fasek vede v\u017edy rychleji ne\u017e dist\u00e1ln\u00ed, u&nbsp;nemocn\u00fdch i&nbsp;s&nbsp;lehkou formou\u00a0SKT\u00a0je v&nbsp;98% tento pom\u011br (1.0), * inching (m\u011b\u0159en\u00ed senzitivn\u00edho veden\u00ed p\u0159es\u00a0karp\u00e1ln\u00ed\u00a0tunel v&nbsp;1 cm vzd\u00e1lenostech (abnormn\u00ed hodnota ( (0,4 ms). Posledn\u00ed dva testy jsou v\u0161ak technicky a&nbsp;\u010dasov\u011b n\u00e1ro\u010dn\u00e9. N\u00e1vrhy postupu p\u0159i&nbsp;diagnostice\u00a0SKT\u00a0uveden\u00e9 v&nbsp;t\u00e9to pozn\u00e1mce a&nbsp;p\u0159\u00edpadn\u00fd n\u00e1lez abnormn\u00edch\u00a0elektrofyziologick\u00fdch\u00a0hodnot sv\u011bd\u010d\u00edc\u00edch pro mo\u017en\u00fd\u00a0SKT\u00a0nemaj\u00ed \u017e\u00e1dn\u00fd vztah ke stanovov\u00e1n\u00ed n\u00e1roku na od\u0161kodn\u011bn\u00ed\u00a0SKT\u00a0jako choroby z&nbsp;povol\u00e1n\u00ed. Definice\u00a0elektrofyziologick\u00e9ho\u00a0st\u0159edn\u011b t\u011b\u017ek\u00e9ho syndromu karp\u00e1ln\u00edho tunelu (dle na\u0159\u00edzen\u00ed vl\u00e1dy \u010d.&nbsp;290\/1995 pro ohl\u00e1\u0161en\u00ed profesionality STK) Stanoven\u00ed\u00a0elektrofyziologicky\u00a0st\u0159edn\u011b t\u011b\u017ek\u00e9ho stupn\u011b\u00a0SKT\u00a0m\u00e1 za c\u00edl vy\u010dlenit skupinu nemocn\u00fdch s&nbsp;v\u00fdznamn\u00fdm po\u0161kozen\u00edm st\u0159edn\u00edho nervu pomoc\u00ed objektivn\u00edho parametru nez\u00e1visl\u00e9ho na spolupr\u00e1ci \u010di&nbsp;subjektivn\u00edch stesc\u00edch nemocn\u00e9ho. P\u0159edb\u011b\u017en\u00e9 podm\u00ednky: 1. P\u0159\u00edtomnost klinick\u00fdch zn\u00e1mek\u00a0SKT\u00a02. Provedena diferenci\u00e1ln\u00ed diagnostika 3. M\u011b\u0159en\u00ed mus\u00ed b\u00fdt provedena standardn\u011b (viz v\u00fd\u0161e) za teploty k\u016f\u017ee 32-36 st.C 1. Rychlost veden\u00ed senzitivn\u00edmi vl\u00e1kny n.\u00a0medianus\u00a0od z\u00e1p\u011bst\u00ed k&nbsp;II. nebo III. prstu ( 38 m\/s nebo nev\u00fdbavnost odpov\u011bdi 2. Norm\u00e1ln\u00ed n\u00e1lez DML a&nbsp;veden\u00ed senzitivn\u00edmi vl\u00e1kny n. ulnaris k&nbsp;V. prstu 3. DML n.medianus\u00a0( 5,3 ms nebo nev\u00fdbavnost odpov\u011bdi 4. N\u00e1lez trval\u00e9 abnormn\u00ed spont\u00e1nn\u00ed aktivity v&nbsp;jehlov\u00e9\u00a0EMG\u00a0z m.APB nejm\u00e9n\u011b ze dvou m\u00edst. Ke stanoven\u00ed sy KT st\u0159edn\u00edho stupn\u011b splnit v\u017edy bod 1.&nbsp;a&nbsp;2.&nbsp;a&nbsp;jeden z&nbsp;bod\u016f 3.&nbsp;nebo 4. Omezen\u00ed standardu: Standard obecn\u011b \u0159e\u010deno nem\u016f\u017ee vystihnout celou bohatost klinick\u00fdch probl\u00e9m\u016f, kter\u00e9 mus\u00ed pracovn\u00edci\u00a0EMG\u00a0laborato\u0159\u00ed \u0159e\u0161it. Je jen n\u00e1vodem, kter\u00fd se bude hodit pro v\u011bt\u0161inu nemocn\u00fdch. Ve zvl\u00e1\u0161tn\u00edch p\u0159\u00edpadech zvol\u00ed elektromyografista ten postup, kter\u00fd bude pova\u017eovat za nejspr\u00e1vn\u011bj\u0161\u00ed. Nicm\u00e9n\u011b mus\u00ed um\u011bt zd\u016fvodnit, pro\u010d takto postupoval. Standard je jeho oporou ve v\u011bt\u0161in\u011b p\u0159\u00edpad\u016f, usnad\u0148uje jeho rozhodov\u00e1n\u00ed, proto\u017ee je souhrnem zku\u0161enost\u00ed mnoha laborato\u0159\u00ed a&nbsp;mnoha pracovn\u00edk\u016f. Dodr\u017een\u00ed standardu neexkulpuje l\u00e9ka\u0159e ze \u0161patn\u011b proveden\u00e9ho vy\u0161et\u0159en\u00ed u&nbsp;jednotliv\u00e9ho nemocn\u00e9ho ve vz\u00e1cn\u011bj\u0161\u00edch situac\u00edch, chr\u00e1n\u00ed jej v\u0161ak \u00fa\u010dinn\u011b proti p\u0159\u00edpadn\u00fdm st\u00ed\u017enostem v&nbsp;naprost\u00e9 v\u011bt\u0161in\u011b p\u0159\u00edpad\u016f. Nedodr\u017een\u00edm standardu se zbyte\u010dn\u011b vystavuje riziku, \u017ee n\u011bco opomene a&nbsp;riziku, \u017ee bude n\u011bkdy muset obt\u00ed\u017en\u011b dokazovat spr\u00e1vnost sv\u00e9ho nestandardn\u00edho postupu.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Standard\u00a0elektrofyziologick\u00e9ho\u00a0vy\u0161et\u0159en\u00ed syndromu karp\u00e1ln\u00edho tunelu pro pot\u0159eby hl\u00e1\u0161en\u00ed choroby z&nbsp;povol\u00e1n\u00ed Standard\u00a0elektrofyziologick\u00e9ho\u00a0vy\u0161et\u0159en\u00ed syndromu karp\u00e1ln\u00edho tunelu pro pot\u0159eby hl\u00e1\u0161en\u00ed choroby z&nbsp;povol\u00e1n\u00ed\u00a0Kada\u0148ka\u00a0Z., Dufek J,&#8230;<\/p>\n","protected":false},"author":23,"featured_media":0,"parent":3047,"menu_order":172,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"_searchwp_excluded":"","kia_subtitle":"","footnotes":""},"class_list":["post-3120","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.2 (Yoast SEO v26.2) - 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