Hjartsláttaróreglulyf Flashcards

1
Q

Vaughan williams flokkun

A

I. Na-ganga blokkar
II. Beta blokkar
III. K-ganga blokkar (lengja boðspennu)
IV. Ca-ganga blokkar

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2
Q

orsakir hjartsláttaróreglu

A

seinkuð after-depolarisation (of hækkað intrac. Ca)
re-entry
ectopic gangráðsvirkni (sympatíkus)
hjartablokk (sjúkdómur í leiðslukerfinu)

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3
Q

klínískt er óreglum skipt í:

A
  1. hvar origin er (supraventricular eða ventricular)

2. hvort HR er að hækka/lækka

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4
Q

Class I:

eitt lyf úr hverjum flokki

A

A: lengja action potential (disopyramide)
B: stytta action potential (lidocaine)
C: hafa ekki veruleg áhrif á action potential (flecainide)

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5
Q

Beta blokkar

-notkun

A
eftir infarct (lækka mortalitet
paroxysmal atrial fibrillation
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6
Q

Class III: áhrif þeirra

A

lengja action potential
lengja refraction tíma
hindra endurörvun

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7
Q

Class III

lyf

A

amiodarone (ath virkni þess)
betylium
sotalol

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8
Q

amiodarone aukaverkanir

A

mjög fituleysanlegt og fellur út í vefi og hefur mjög langan helmingunartíma
bara hjartalæknar mega skrifa upp á þetta
skjaldkirtils dysfunction
lungnaskaði

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9
Q

Class IV:

virkni

A

lengja refrakter tíma

hindra leiðni í SA og AV hnút

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10
Q

Atropine

A

sinus bradycardia

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11
Q

adrenaline

A

cardiac arrest

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12
Q

isoprenaline

A

heart block

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13
Q

digoxin

  • virkni
  • not
A

hindrar Na/K ATPase, minnkar leiðni í AV-hnút

rapid atr fib

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14
Q

adenosine

A

supraventricular tachycardia

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15
Q

calcium chloride

A

ventricular tachycardia v/ hyperkalemia

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16
Q

magnesium chloride

A

ventricular fibrillation

digoxin eitrun

17
Q

adenosine

-virkni

A

tengist viðtaka sínum sem er tengdur við sömu K-göngí hjartanu og eru virkjuð af acetylcholine => hyperpolariserar leiðslukerfið … stoppa SVT
gefið i.v. bolus ef crotid artery massage hefur ekki borið árangur (þá auka vagal tone)