Mechanical Ventilation Flashcards
ETCO2 is a indirect measurement of what?
CO
normal ETCO2
35-45 mmhg
level ETCO2 indicating ineffective CPR?
< 10 mmhg
Effective CPR ETCO2?
10-20 mmhg
level ETco2 in which ROSC occurs?
35-45 mmhg due to inc CO and perfusion of lungs
concern for etomidate in indudction?
adrenal gland suppression for 24-48 hours leading to hypotension
concern for ketamine in induction?
inc catecholamine surge in patients with cardiac disease, leading to cardiovascular collapse
how does succinylcholine lead to hyperkalemia?
it is a depolarizing NM blocker, which causes depol and blocking of the ACH receptor. The depol leads to fasculculations and K efflux from the cells
who is at risk for inc K with succ?
spinal cord injuries, rhabdo, burns, chronic limb paralysis, prolonged bed rest
why does Rocuronium not cause K inc?
it is not a depolarizing NM blocker, therefor no efflux during fasiculations
abdominal paradox?
a sign of diaphragmatic weakness or fatigue within 1 minute of SBT
sniff test?
US the diaphram and the diaphragm will move upward during inhalation instead of downward which is normal
advantage of cisatracurium as paralytic?
hydrolyzed by blood esterases, so is good for patients with hepatic disease
half life of Rocuronium
45 mins
diaphragmatic thickening fraction(DTF)
if <30% they are at risk of liberation from vent failure
- M mode measurement
