ustni izpit random Flashcards

1
Q

Kaj meri igelni EMG

A

zabelezi elektricno aktivnost v specificni misici

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2
Q

nerve conduction studies - kaj merijo?

A

prevajanje po zivcih kot odziv na elektricni stimulus

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3
Q

repetitivna zivcna stimulacija - kaj meri?

A

pomembno za dolocit bolezni zivcno misicnega stika eg. miastenia gravis

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4
Q

koliksen je normalen mirovni potencial misice v pocitku

A

90 mV

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5
Q

kaj se pokaze, ko se misica skrci?

A

motor unit potenciali, potem se razvije vzorec

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6
Q

kdaj je prisotna spontana aktivnost v mirovanju

A

fibrilacije - posamezno misicno vlakno se krci - indikacija za aktivno denervacijo

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7
Q

sharp positive spikes pred slow negative waves - kdaj se pojavijo?

A
  • vidni so v kronicno denervirani misici
  • npr. bolezen motoricnega nevrona, akutna miopatija npr. polimiozitis
  • ti valovi verjetno nakazujejo poskodbene potenciale
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8
Q

potencial motoricne enote pri miopatijah in misicnih distrofijah

A

polifazicen
majhna amplituda
kratkotrajne

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9
Q

potencial motoricne enote - nevropatije

A

polifazicni
visoke amplitude
dolgo trajajo
visji potenciali zaradi kolateralne inervacije
zmanjsanje vzorca, ker je manj motoricnih enot pod hotenim nadzorom

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10
Q

EMG - miotonija

A
  • po hotenem gibu lahko sledi visokofrekvencni ponavljajoc discharge
  • amplituda in frekvenca - dive bomber zvok na audio monitorju
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11
Q

nerve conduction studies - kaj gledas (3)

A

distalno latenco
amplitudo vzburjenega odgovora
hitrost prevajanja

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12
Q

kdaj je podaljsan cas prevajanja? (3)

A
  1. vkleščenje živca
  2. demielinizacijske nevropatije
  3. multifokalna motoricna nevropatija
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