L5. Depolarizing Muscle Relaxants Flashcards
1
Q
Succinylcholine
A
First muscle relaxant
Depolarizing MR
Diacetylcholine
Keeps NA channel open
Metabolized in plasma (90 - 99%)
~ 3 min Action
Meds: SAD
SE: fasciculations, myalgia
Hyperkalemia:
(hard contraction = release of K+)
Inc pressure:
intracranial
intragastric
intraoccular
2
Q
Dibucaine test
A
To test for atypical P ChE
(80% - normal)
(20% - atypical)
3
Q
SUX + sulfentanil
A
Treats pain
4
Q
SUX + atropine
A
Treats bradycardia, bronchospasm
5
Q
SUX + dantrolene
A
Treats massetter muscle spasm (malignant hyperthermia)
6
Q
SUX TOF
A
No fade
IIII iiii
7
Q
Excitability equation
A
Potassium conc
———————
Calcium conc x magnesium conc
