Lub paj conduction tshaj tawm

Kev Tshawb Fawb Txoj Kev Ntsuas (NCV) yog ib qho kev ntsuas kom pom sai npaum li cas cov teeb liab hluav taws xob txav los ntawm txoj hlab ntshav. Qhov kev ntsuas no tau ua tiav nrog rau electromyography (EMG) txhawm rau ntsuas cov leeg nqaij rau qhov tsis meej.

Cov txheej nplaum nplaum hu ua cov nplaim hluav taws xob tau muab tso rau ntawm daim tawv nqaij dua li cov leeg ntawm cov chaw sib txawv. Txhua thaj muab tawm hluav taws xob me me thawb me me. Qhov no txhawb cov hlab ntsha.

Qhov ua tau hluav taws xob ua haujlwm ntawm cov hlab ntsha yog kaw los ntawm lwm cov hluav taws xob. Qhov kev ncua deb ntawm electrodes thiab lub sijhawm nws siv rau kev siv hluav taws xob mus los ntawm hluav taws xob tau siv los ntsuas qhov nrawm ntawm lub teeb liab hlab ntsha.

EMG yog qhov sau los ntawm koob muab tso rau hauv cov leeg. Qhov no feem ntau tau ua nyob rau tib lub sijhawm nrog kev xeem no.

Koj yuav tsum nyob ntawm lub cev qhov kub thiab txias. Ua txias dhau lossis sov dhau alters cov hlab ntsha conduction thiab tuaj yeem muab cov lus tsis tseeb.

Qhia rau koj tus kws kho mob yog tias koj muaj tus mob tshuaj defibrillator lossis tus nplais roj. Cov kauj ruam tshwj xeeb yuav xav tau ua ntej ntsuas yog tias koj muaj ib qho ntawm cov khoom siv no.

Tsis txhob hnav khaub thuas, tshuaj pleev thaiv hnub, naj hoom los yog tshuaj pleev rau koj lub cev rau hnub ntsuas.

Lub siab ua haujlwm yuav zoo li lub teeb hluav taws xob. Koj tuaj yeem xav tias qee qhov tsis xis nyob nyob ntawm seb qhov siab ntawm lub zog loj li cas. Koj yuav tsum tsis muaj kev mob siab thaum kuaj tas.

Feem ntau, txoj kev soj ntsuam cov hlab ntsha hauv lub siab yog ua raws los ntawm electromyography (EMG). Hauv qhov kev ntsuas no, ib rab koob tau tso rau hauv cov leeg thiab koj raug hais kom ua cov leeg ntawd. Tus txheej txheem no tuaj yeem tsis yooj yim thaum lub caij kuaj. Koj tuaj yeem muaj cov leeg mob lossis ua kom nqaij zoo tom qab kuaj qhov chaw nyob ntawm rab koob uas tau ntxig.

Qhov kev kuaj no yog siv los soj ntsuam txog puas tsuaj lossis puas tsuaj. Qee zaum kuaj yuav siv los ntsuas kab mob ntawm cov hlab ntsha lossis leeg nqaij, suav nrog:

• Myopathy
• Lambert-Eaton syndrome
• Myasthenia gravis
• Tus mob carpal
• Tarsal qhov syndrome
• Mob neuropathy mob ntshav qab zib
• Tswb Siv Yis
• Guillain-Barré mob
• Hlab pob txha caj qaum

NCV muaj feem xyuam rau txoj kab uas hla ntawm lub paj hlwb thiab cov neeg kawm tiav myelination (qhov kuaj pom muaj myelin sheath ntawm lub axon) ntawm lub paj. Cov menyuam mos yug tshiab muaj qhov tseem ceeb uas yog kwv yees li ib nrab ntawm cov neeg laus. Cov neeg muaj nqi rau cov laus ib txwm muaj thaum hnub nyoog 3 lossis 4 xyoos.

Nco tseg: Tus lej ib txwm muaj nuj nqis yuav txawv me ntsis ntawm ntau lub chaw soj nstuam. Tham nrog koj tus kws kho mob txog cov ntsiab lus ntawm koj cov kev kuaj sim.

Feem ntau, cov txiaj ntsig tsis meej yog vim txoj hlab ntshav lossis kev puas tsuaj, suav nrog:

• Axonopathy (kev puas tsuaj rau ntu ntev ntawm cov hlab ntsha xovtooj)
• Kev sim ua ntu zus (lub siab xav raug thaiv ib puag ncig raws txoj kab ntawm lub paj)
• Demyelination (ua kom puas thiab poob ntawm cov rwb thaiv cov rog nyob ib puag ncig ntawm lub paj hlwb)

Lub paj lossis puas tsuaj yuav yog vim muaj ntau yam mob, suav nrog:

• Cawv mob neuropathy
• Mob neuropathy mob ntshav qab zib
• Kev ntshaus siab ntawm uremia (los ntawm lub raum tsis ua haujlwm)
• Kev raug mob raug mob rau lub paj hlwb
• Guillain-Barré mob
• Mob ncauj plab
• Tus mob carpal
• Hlab pob txha caj qaum
• Kab Mob Charcot-Marie-Tooth (kab mob keeb)
• Mob ntsws polyneuropathy mob
• Ib qho peroneal hlab ntsha ua haujlwm
• Distal nruab nrab hlab ntsha tsis ua hauj lwm
• Poj niam txiv neej lub raum tso tawm
• Friedreich ataxia
• Paresis dav dav
• Mononeuritis multiplex (ntau yam kev mob mononeuropathies)
• Thawj amyloidosis
• Radial paj hlwb tsis ua haujlwm
• Sciatic hlab ntsha tawg ua haujlwm
• Secondary systemic amyloidosis
• Sensorimotor polyneuropathy
• Tibial hlab ntsha tsis ua haujlwm
• Ulnar hlab ntsha tawg tsis ua haujlwm

Ib qho kev tawm tsam paj hlwb tuaj yeem ua rau pom qhov txawv txav. Kev puas tsuaj rau tus txha caj qaum thiab disk herniation (herniated nucleus pulposus) nrog cov hlab ntsha hauv lub hauv paus tseem tuaj yeem ua rau muaj qhov txawv txav.

Kev kuaj NCV qhia tau qhov xwm txheej ntawm qhov zoo tshaj plaws muaj txoj sia nyob ntawm cov hlab ntsha. Yog li, qee kis, qhov tshwm sim tuaj yeem yog qhov qub, txawm tias muaj kab mob hauv lub paj.

NCV

• Kev soj ntsuam leeg

Deluca GC, Griggs RC. Txoj kev rau tus neeg mob neurologic. Hauv: Goldman L, Schafer AI, eds. Goldman-Cecil TshuajCov. 26th ed. Philadelphia, PA: Elsevier; 2020: cha 368.

Nuwer MR, Pouratian N. Kev soj ntsuam ntawm neural muaj nuj nqi: electromyography, kev ua haujlwm ntawm lub paj hlwb, thiab evoked lub peev xwm. Hauv: Winn HR, ed. Youmans thiab Winn Neurological phaisCov. 7 tus ed. Philadelphia, PA: Elsevier; 2017: chap 247.