NMBAs pt I Flashcards
Experienced CRNAs cannot visually detect a TOF reduction of about ____ % or ______ B/A
60; 0.4
Double burst uses _____ Hz
50
Double burst involves 2 sets of ____ short bursts, and delivers them at ___ Hz
3; 50
What is the intended purpose of NMBAs ? Give 3 reasons bitch
- Decreased airway trauma
- Fascilitates surgical exposure
- Minimizes injury d/t pt movement
To activate the adductor pollicis muscle, which nerve is stimulated?
Ulnar nerve
What muscle is indicative of laryngeal recovery following admin of roc
Adductor pollicis
The order of the block is dependent on :
-# of presynaptic ACh containing vesicles
-# of postsynaptic ACh receptors
-Blood flow to area
-Drug potency
Which muscle can reflect diaphragmatic and laryngeal blockade? What is it less indicative of?
Orbiculararis oculi; Poor indicator of residual paralysis
Which electrode is negative (red or black?)
Black
TOF involves ______ stimuli at ____ Hz in 1/2 second
4 stimuli ; 2hz
T/F: At a TOF of 0.7 -0.9 you may still have significant residual blockade present at the NMJ
TRUEEEEEEEEE
A tetanic stimulation will show a _______ response with succinylcholine and a _______ response with vecuronium.
sustained response; non-sustained
A phase II block will show a ________ response with tetanic stimulation
non-sustained
Normal resting membrane potential for this class
-90 mV
Does succ release histamine
yuhhhh
Succ dose
1mg / kg
K will increase how much with succ admin?
0.5 mEq/ L
TOF ratio for Succ
> 0.7
Poorly functioning ______ can result in a phase II block even with appropriate dosing
pseudocholinesterase aka bootycholinesterase
Factors that decrease bootycholinesterase
age, liver, pregnancy, burns, OCP, MAOI, Anticholinesterase drugs
Succinylcholine might cause a difficult intubation via what adverse effect?
masseter spasm
What NMBA should be avoided for both increased ICP and ocular cases?
Succ
Succ overdose that results in a phase II block will begin to mimic ___________
non-depolarizing NMBAs
