Muscle Relaxants Flashcards

0
Q

skeletal muscle relaxant are used as adjunct to __________

A

anaesthetics

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1
Q

define skeletal muscle relaxant

A

relax skeletal muscles

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2
Q

classification of skeletal muscle relaxant

A

central acting

peripherally acting

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3
Q

PERIPHERALLY ACTING skeletal muscle relaxants can be divided in to

A
neuromuscular blockers(NMB)
direct skeletal muscle relaxant
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4
Q

neuromuscular blockers(NMB) can further be subdivided into

A

competitive

non-competitive

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5
Q

competitive neuromuscular blockers(NMB) are aka _________

A

curariform drugs

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6
Q

name 3 CENTRAL skeletal muscle relaxants (DiMaG)

A

diazepam
mef-enesin
guiaf-enesin

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7
Q

name 3 COMPETITIVE neuromuscular blockers (TA2)

A

tubo-curaine
al-curonium
atra-curonium

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8
Q

name 2 NON-COMPETITIVE neuromuscular blockers (DaS)

A

deca-methonium

succinyl-choline

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9
Q

name 2 DIRECT skeletal muscle relaxant (DeeP)

A

dantrolene

phenytoin

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10
Q

centrally action skeletal muscle relaxants aka ___________

A

skeletal muscle spasmolytics

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11
Q

centrally action skeletal muscle relaxants act by interfering with _______ & _________

A

internuntial pathways in spinal cord

reticular activating system

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12
Q

mefenesin & guaia-fenesin act as ______ agonist

A

glycine

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13
Q

mefenesin & guaia-fenesin antagonise which convulsions?

A

stry-chnine

tetanus

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14
Q

stry-chnine & tetanus convulsions can be antagonised by _________

A
  • centrally acting skeletel muscle relaxants(mefenesin & guaia-fenesin )
  • methocarbamol
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15
Q

diazepam cause paralysis of muscles through ___________

A

gaba facilitation

16
Q

diazepam is used to antagonis convulsions of ____________

A

picrotoxin

17
Q

picrotoxin convulsions can be antagonised by

A

diazepam

18
Q

other 2 names of competitive NMB

A

curariform drugs

‘‘non-depolarizing” NMB

19
Q

tell the type and duration of paralysis caused my competitive NMBs

A

flaccid

30-60 min

20
Q

order of paralysis caused by competitive NMB

A

eyes>neck>limb>diaphragm

21
Q

noncompetitive NMB are aka ____________

A

depolarizing NMB

22
Q

the paralysis caused by non-competitive NMB are preceded by _________

A

muscular twichings

23
Q

type and duration of paralysis causes by non-competitive NMB

A

tonic

5-15 minutes

24
Q

why non-competitive NMB have shorter duration

A

as they are inactivated by pseudoCHE in liver

25
Q

effect of antiCHE agents on
competitive NMB
non-competitive NMB

A

antagonism

synergistic effect

26
Q

cat is most sensitive to competitive or non-competitive NMBs

A

non-competitive NMBs

27
Q

MOA of dantrolene(direct acting skeletal muscle relaxant)

A

interfere with release of Ca ions from sarcoplasmic reticulum of muscle fibres

28
Q

MOA of phenytoin(direct acting skeletal muscle relaxant)

A

interfere with function of ACh at motor end plate

29
Q

south american arrow poison is also known as

A

tubo-curaine(competitive NMB)

30
Q

MOA of cobra snak venom & clostridial toxin

A

prevent ACh rlease from motor nerve endings

31
Q

name the two cobra snake venoms

A

a-bungaro-toxin

b-bungarotoxin

32
Q

cobra snake venom are _______toxic

A

neuro