Isantya sokuqhuba kwemithambo

Uvavanyo lwe-velocity velocity (NCV) luvavanyo lokubona ukuba ngaba amandla ombane akhawulezisa kangakanani ukuhamba kwimithambo-luvo. Olu vavanyo lwenziwa kunye ne-electromyography (EMG) yokuvavanya izihlunu ngokungaqhelekanga.

Iimpawu ezibambekayo ezibizwa ngokuba zii-electrode zomhlaba zibekwa kulusu ngaphezulu kwemithambo-luvo kwiindawo ezahlukeneyo. Isiqwenga ngasinye sikhupha umoya onamandla kakhulu. Oku kuvuselela imithambo-luvo.

Iziphumo zombane zentsimbi zibhalwa zezinye ii-electrode. Umgama phakathi kwee-electrode kunye nexesha elithathayo ukunyanzeliswa kombane ukuhamba phakathi kwee-electrode zisetyenziselwa ukulinganisa isantya seempawu zemithambo-luvo.

I-EMG ukurekhodwa kwiinaliti ezibekwe kwiimisipha. Oku kuhlala kusenziwa ngaxeshanye nolu vavanyo.

Kuya kufuneka uhlale kubushushu obuqhelekileyo bomzimba. Ukubanda kakhulu okanye ukufudumala kakhulu kuguqula ukuqhuba kwemithambo-luvo kwaye kunokunika iziphumo ezingezizo.

Tshela ugqirha wakho ukuba unayo i-cardiac defibrillator okanye i-pacemaker. Amanyathelo akhethekileyo aya kufuneka athathwe phambi kovavanyo ukuba unenye yezi zixhobo.

Musa ukunxiba into yokuthambisa, into yokuthambisa ilanga, isiqholo okanye into yokuthambisa emzimbeni wakho ngosuku lovavanyo.

Impembelelo inokuziva ngathi yothuka ngombane. Unokuziva ungonwabanga ngokuxhomekeka kwindlela onamandla ngayo. Akufanele uve ntlungu xa uvavanyo lugqityiwe.

Rhoqo, uvavanyo lokuqhutywa kwembilini lulandelwa yi-electromyography (EMG). Kolu vavanyo, inaliti ibekwa kwimisipha kwaye uxelelwe ukuba wenze isivumelwano nalo msipha. Le nkqubo inokungonwabi ngexesha lovavanyo. Unokuba nobunzima bemisipha okanye ukutyumza emva kovavanyo kwisiza apho inaliti yafakwa khona.

Olu vavanyo lusetyenziselwa ukufumanisa umonakalo we-nerve okanye ukutshatyalaliswa. Uvavanyo ngamanye amaxesha lunokusetyenziselwa ukuvavanya izifo zentliziyo okanye imisipha, kubandakanya:

• Unyango
• Isifo seLambert-Eaton
• IMyasthenia gravis
• Isifo seCarpal tunnel
• Isifo seTarsal tunnel syndrome
• Isifo seswekile
• Ukukhubazeka kwentsimbi
• Isifo seGuillain-Barré
• I-plexopathy yeBrachial

I-NCV inxulumene nobubanzi be-nerve kunye nenqanaba le-myelination (ubukho be-myelin sheath kwi-axon) ye-nerve. Iintsana ezisandul 'ukuzalwa zinemilinganiselo ephantse ibe sisiqingatha sabantu abadala. Amaxabiso abantu abadala ahlala efikelelwa kubudala beminyaka emi-3 okanye emi-4.

Qaphela: Uluhlu lwamaxabiso aqhelekileyo luyahluka kancinci phakathi kweelebhu ezahlukeneyo. Thetha nomboneleli wakho wezempilo malunga nentsingiselo yeziphumo zakho zovavanyo.

Rhoqo, iziphumo ezingaqhelekanga zibangelwa ngumonakalo wemithambo-luvo okanye intshabalalo, kubandakanya:

• I-axonopathy (umonakalo kwinxalenye ende yeseli ye-nerve)
• Iibhloko zokuqhuba (impembelelo ivaliwe kwenye indawo ecaleni kwendlela)
• Ukudambisa (ukonakaliswa kunye nelahleko yokugquma okunamafutha okujikeleze iseli ye-nerve)

Umonakalo wemithambo okanye ukutshatyalaliswa kunokubangelwa ziimeko ezininzi ezahlukeneyo, kubandakanya:

• I-neuropathy yotywala
• Isifo seswekile
• Iziphumo zemithambo-luvo ye-uremia (ukusilela kwezintso)
• Ukulimala kabuhlungu kwi-nerve
• Isifo seGuillain-Barré
• Udiphtheria
• Isifo seCarpal tunnel
• I-plexopathy yeBrachial
• Isifo seCharcot-Marie-Tooth (ilifa)
• I-polyneuropathy engapheliyo yokuvuvukala
• Ukungasebenzi kakuhle kwemithambo-luvo
• Ukungasebenzi kakuhle kwemithambo-luvo
• Ukungasebenzi kakuhle kwentliziyo kwabasetyhini
• UFriedreich ataxia
• I-paresis ngokubanzi
• I-mononeuritis multiplex (i-mononeuropathies ezininzi)
• Amyloidosis yamabanga aphantsi
• Ukungasebenzi kakuhle kwemithambo-luvo
• Ukungasebenzi kakuhle kwentliziyo
• Inkqubo yesibini ye-amyloidosis
• Isensorimotor polyneuropathy
• Ukungasebenzi kakuhle kwethambo le-Tibial
• Ukungasebenzi kakuhle kwemithambo-luvo

Nayiphi na i-peripheral neuropathy inokubangela iziphumo ezingaqhelekanga. Ukulimala kwintambo yomgogodla kunye ne-disk herniation (i-herniated nucleus pulposus) enexinzelelo lweengcambu kungabangela iziphumo ezingaqhelekanga.

Uvavanyo lwe-NCV lubonisa imeko yezona fibre zemithambo-luvo zisindileyo. Ke ngoko, kwezinye iimeko iziphumo zinokuqheleka, nokuba kukho umonakalo we-nerve.

I-NCV

• Uvavanyo lokuqhutywa kwemithambo

UDeluca GC, uGriggs RC. Indlela yesigulana ngesifo se-neurologic. Ku: IGoldman L, iSchafer AI, ii-eds. Amayeza eGoldman-Cecil. Ngomhla wama-26. IPhiladelphia, PA: Elsevier; 2020: isahluko 368.

UNuwer MR, uPouratian N.Ukubeka iliso kwimisebenzi ye-neural: i-electromyography, i-nerve conduction, kunye nezinto ezinokubakho. Ku: Winn HR, ed. Ugqirha we-Youmans kunye no-Winn Neurological. Umhla wesi-7. IPhiladelphia, PA: Elsevier; Ngo-2017: isahluko 247.