mechanical ventilation Flashcards
how much O2 is in the air
21%
what are the 3 ventilator parameters that you need to know
mode of ventilation
FiO2
PEEP
what are the 2 monitored parameters that you need to know
minute ventilation
respiratory rate
what is defined as the pressure applied by the ventilator at the end of each breath
PEEP (positive end expiratory pressure)
what does PEEP prevent the airways from doing
collapsing
excessive PEERP may ____ cardiac output and impair systemic oxygen delivery
reduce ( because to much pressure )
3-5 cmH2O is considered what level of PEEP
low
5-15 cmH2O is considered what level of PEEP
moderate
> 15 cmH2O is considered what level of PEEP
high
the purpose of moderate peep is to treat refractory _____ in acute lung injury
Hypoxemia
what are the 3 traditional ventilation modes
assist control
synchronized intermittent mandatory ventilation + pressure support
pressure support
assist control is a ___ weaning mode
non
in assist control the rate and tidal volume are ____
pre set
with assist control the pateint can generate breaths by triggering ventilator (T/F)
true
Synchronized Intermittent Mandatory Ventilation (SIMV) is a non weaning mode (T/F)
false ( it is a weaning mode)
a patient on Synchronized Intermittent Mandatory Ventilation (SIMV) will get ____ breaths by trigger ventilator
spontaneous
what to take note of with Synchronized Intermittent Mandatory Ventilation (SIMV)
rate
FiO2
PEEP
pressure support
Pressure Support Ventilation (PSV) is a ____ mode
weaning
is the tidal volume pre-set with Pressure Support Ventilation (PSV)
no
if a patient is on Pressure Support Ventilation (PSV)
they control the _____ rate and ____ time
respiratory rate and inspiratory time
what is the Pressure Support Ventilation (PSV) usually set at
10 cmH2O
what is the highest and lowers Pressure Support Ventilation (PSV)
0 is lowest and 30 is highest
what to look at for Pressure Support Ventilation (PSV)
pressure support
FiO2
PEEP
does A/C given additional breaths to patients? SIMV? SPONT (CPAP/PS) ?
A/C- yes
SIMV- yes
SPONT- no
during assist control the ventilator delivers pre set _____
tidal volume/pressure
what are the 2 categories for non invasive ventilation
CPAP and BIPAP
which non invasive ventilation is constance positive pressure applied in the airways
CPAP
If patient only needs NIPPV prn can they tolerate physical activity
yes
if someone has a pressure support of 20 cmH2O is that a lot or a little
a lot bc max is 30
which ventilations are more for weaning
SIMV and SPON (CPAP/PS)
if a patient has FiO2 > 60% or .6 would u work with them?
no
