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Nerve conduction velocity (NCV) ke teko ea ho bona hore na matšoao a motlakase a feta kapele hakae methapong. Teko ena e etsoa hammoho le electromyography (EMG) ho lekola mesifa bakeng sa ho sa tloaelehang.

Matlalo a khomarelang a bitsoang li-electrode tsa holim'a metsi a beoa letlalong holim'a methapo libakeng tse fapaneng. Karolo e 'ngoe le e' ngoe e fana ka tšusumetso e matla haholo ea motlakase. Sena se hlasimolla methapo.

Ketsahalo ea motlakase e hlahisoang ke methapo e tlalehiloe ke li-electrode tse ling. Sebaka se pakeng tsa li-electrode le nako eo se e nkang bakeng sa litšusumetso tsa motlakase ho tsamaea lipakeng tsa li-electrode li sebelisoa ho metha lebelo la matšoao a methapo.

EMG ke ho rekota ho tsoa linaleng tse kenngoeng mesifa. Hangata hona ho etsoa ka nako e le 'ngoe le teko ena.

U tlameha ho lula mocheso o tloaelehileng oa 'mele. Ho bata haholo kapa ho futhumala haholo ho fetola methapo ea kutlo mme ho ka fana ka litholoana tse fosahetseng.

Bolella ngaka ea hau haeba u na le "defibrillator" ea pelo kapa pacemaker. Ho tla hlokahala hore ho nkuoe mehato e khethehileng pele ho tlhahlobo haeba u na le e 'ngoe ea lisebelisoa tsena.


Se ke oa itlotsa ka setlolo se sireletsang letlalo letsatsing, setlolo se nkhang hamonate kapa setlolo se itlhatsoetsang 'meleng oa hau ka letsatsi la tlhahlobo.

Tšusumetso e joalo e kanna ea utloahala joalo ka motlakase. U kanna oa ikutloa u sa phutholoha ho latela hore na tšusumetso e matla hakae. Ha ua lokela ho utloa bohloko hang ha tlhahlobo e phethetsoe.

Hangata, tlhahlobo ea methapo ea kutlo e lateloa ke electromyography (EMG). Tekong ena, nale e kenngoa ka mosifa mme o bolelloe hore o ts'oare mesifa eo. Ts'ebetso ena e ka ba e sa phutholohang nakong ea tlhahlobo. U kanna oa ba le bohloko ba mesifa kapa matetetso kamora tlhahlobo ho sebaka seo nale e kentsoeng ho sona.

Teko ena e sebelisetsoa ho fumana ts'enyo ea methapo kapa tšenyo. Ka linako tse ling tlhahlobo e ka sebelisoa ho lekola mafu a methapo kapa mesifa, ho kenyelletsa:

  • Myopathy
  • Lefu la Lambert-Eaton
  • Myasthenia gravis
  • Lefu la Carpal tunnel
  • Matšoao a lefu la Tarsal
  • Lefu la lefu la tsoekere
  • Ho holofala ha tšepe
  • Lefu la Guillain-Barré
  • Plexopathy ea brachi

NCV e amana le bophara ba methapo le tekanyo ea myelination (boteng ba myelin sheath ka axon) ea methapo. Masea a sa tsoa tsoaloa a na le litekanyetso tse ka bang halofo ea batho ba baholo. Litekanyetso tsa batho ba baholo hangata li fihlelloa ka lilemo tse 3 kapa tse 4.


Tlhokomeliso: Mekhahlelo ea boleng bo tloaelehileng e ka fapana hanyane hara lilaboratori tse fapaneng. Bua le mofani oa tlhokomelo ea bophelo mabapi le moelelo oa sephetho sa hau sa liteko.

Hangata, liphetho tse sa tloaelehang li bakoa ke tšenyo ea methapo kapa tšenyo, ho kenyelletsa:

  • Axonopathy (tšenyo ea karolo e telele ea sele ea methapo)
  • Khokelo ea ho khanna (tšusumetso e koetsoe kae kae tseleng ea methapo)
  • Demyelination (tšenyo le tahlehelo ea mafura a potolohileng sele ea methapo)

Tšenyo ea methapo kapa tšenyo e ka bakoa ke maemo a fapaneng a fapaneng, ho kenyeletsoa:

  • Ho lemalla ho noa joala
  • Lefu la lefu la tsoekere
  • Liphello tsa methapo ea uremia (ho hloleha ha liphio)
  • Kotsi e bohloko ea methapo
  • Lefu la Guillain-Barré
  • Diphtheria
  • Lefu la Carpal tunnel
  • Plexopathy ea brachi
  • Lefu la Charcot-Marie-Tooth (lefutso)
  • Ho ruruha ho sa foleng ha polyneuropathy
  • Ho se sebetse ho tloaelehileng ha methapo ea pelo
  • Ho se sebetse ha methapo ea methapo e bohareng
  • Ho se sebetse ha methapo ea basali
  • Friedreich ataxia
  • Kakaretso paresis
  • Multiplex ea mononeuritis (mononeuropathies tse ngata)
  • Amyloidosis ea mantlha
  • Ho se sebetse ha methapo ea maqhubu
  • Ho se sebetse ha methapo ea mahlale
  • Sesebelisoa sa bobeli sa amyloidosis
  • Sensorimotor polyneuropathy
  • Ho se sebetse ha methapo ea methapo
  • Ho se sebetse ha methapo ea ulnar

Ts'oaetso efe kapa efe ea methapo ea kutlo e ka baka litholoana tse sa tloaelehang. Tšenyo ea mokokotlo oa mokokotlo le disk herniation (herniated nucleus pulposus) e nang le khatello ea methapo ea methapo le eona e ka baka litholoana tse sa tloaelehang.


Teko ea NCV e bonts'a boemo ba likhoele tsa methapo tse ntseng li phela hantle. Ka hona, maemong a mang liphetho li ka ba tse tloaelehileng, leha ho ka ba le tšenyo ea methapo.

NCV

  • Teko ea ho khanna methapo

Deluca GC, Griggs RC. Atamela mokuli ea nang le lefu la methapo. Ka: Goldman L, Schafer AI, li-eds. Phekolo ea Goldman-Cecil. La 26th. Philadelphia, PA: Elsevier; 2020: khaolo ea 368.

Nuwer MR, Pouratian N. Tlhokomelo ea ts'ebetso ea methapo: electromyography, conduction ea methapo, le menyetla e hlahisitsoeng. Ka: Winn HR, e hlophisitsoeng. Phekolo ea Youmans le Winn Neurological. La 7th. Philadelphia, PA: Elsevier; 2017: khaolo ea 247.

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