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RESP-145 O2 DEVICES
O2 DEVICES
128
Health Care
Undergraduate 2
10/21/2008

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Cards

Term

NASAL CANNULA

ADULT/PEDS MAKE SURE YOU GRAB RT SIZE

GREEN CAPILARY TUBE IS FOR HIGH FLOW

CLEAR CAPILIARY TUBE FOR LOW FLOW

0.5 LPM - 6 LPM  SET FLOW ON FLOW METER

CAN HUMIDIFY AT ANY LPM RATE

 ALWAYS HUMIDIFY ↑4 LPM

 

Definition

SIMPLE MASK - LOW FLOW

0.35 & 0.50 Fi02. INFANT/ADULT SIZE

MUST RUN AT MIN. OF 5LPM TO FLUSH OUT CO2

SEEN MOSTLY IN TRANSPORT PATIENTS

 

Term

VENTI MASK IS HIGH FLOW

WORKS BY AIR ENTRAINMENT/JET MIXING USING BERNOULLI'S PRINCIPLE RANGES FROM 24% TO 55% EVERY % HAS ITS OWN RATIO AND LPM

THERE ARE VARYING FIO2 AND LITER FLOWS ON PORT

CAN BE HUMIDIFIED BUT NOT DONE SO NORMALLY

GOOD FOR COPD'ERS WHO REQ HIGH CONCENTRAION OF 02 AT A PRECISE RATE

Definition
Term
LARGE VOLUME NEBULIZER - A/K/A BLAND AEROSOL HIGH HUMIDITY.    LARGE CORAGATED TUBING- PATIENTS REQUIRE PRECISE FiO2 DELIVERS AEROSOLIZED NORMAL SALINE OR STERILE WATER BY JET MIXING.  IS A HIGH FLOW SYSTEM REQUIRES THAT THE WATER IN TUBING BE EMPTIED OCCASSIONALLY  
Definition

LARGE VOLUME NEBULIZER CAN BE USED WITH A TRACH COLLAR ON A FAIRLY STABLE TRACH PATIENT

FACE MASK FOR PATIENT COMFORT PED/ADULT

FACE TENT- PATIENT IS CLOSTERPHOBIC, FACIAL INJURY, POST FACIAL SURGERY

T-PIECE - PT ON ENDO TRACH TUBE W/O VENTILATOR, 

Term

ULTRA SONIC NEBULIZER

USED FOR BRONCHO HYGIENE/THIN SECRETIONS  DELIVERY OF BLAND AEROSOL/HUMDITY, FINE AEROSOLIZED PARTICLES,   PIEZOELECTRIC CRYSTAL AT BOTTOM OF UNIT

CARE/MONITOR PATIENT FOR OVER HYRDRATION

BRONCHOSPASM

UNIT PULLS IN AMBIENT AIR, CAN BE USED WITH NASAL CANNULA FOR O2 ADMIN SIMULATIONOUSLY

AMPLITUDE/FREQUENCY

FIO2 OVER 50 SET UP TANDEM OR USE MYSTI OX

Definition
Term

CONTINUOUS NEBULIZER - MED CUP UP TO 20ML

PROVIDES TX /MEDS OR HIGH HUMIDITY

TX ARE ABOUT ONE HOUR LONG

LARGEST VOLUME MED CUP (USED MAINLY IN ED AND NICU 240ML/4-8HR TX

MONITOR PATIENT DURATION OF TX,  USUALLY PT IS WIRED TO EKG FOR MONITORING AND SPO2, TACHYCARDIA IS A POTIENTIAL PROBLEM, ALSO MEASURE SERUM POTASSIUM LEVELS Q4H

 

Definition
Term

NON REBREATHER MASK - RESERVOIR BAG ATTACHED TO MASK TO PROVIDE 100% (DEPENDS ON PT Vt)  MUST BE RUN AT 5 LPM BUT CAN RUN UP TO 15 LPM.

LITER FLOW RANGE  8-15LPM-A LOW FLOW DEVICE

VALVES ARE EIHER ALL IN PLACE OR ALL OFF,

IF TAKEN OFF, TAPE THEM TO THE BAG ANS SAVE

RESEVIOR BAG REQUIRES A GOOD PULSATION WITH INSPIRATION AND EXPIRATION

 

Definition
Term

WEANING STEPS

NRB

PRB

VENT

NC

NONE

 

Definition
Term

IF YOU ENCOUNTER A PT IN TROUBLE, EX:

CYANOSIS, SHALLOW RESPS AND OUT OF IT,

DON'T LEAVE THE PT'S ROOM!

CHECK THE PULSE/CALL RN- HIT THE LIGHT OR YELL FOR SOMEONE) AND GET THE PTS CODE STATUS,  IF YOU HAVE A SAT MONITOR YOU CAN APPLY THAT.

Definition
Term
the power source used by the vent provides energy to perform the work of ventilating the patient, ventilator power sources include
Definition
electrical, pneumatic and dual control
Term
early vents such as the tank ventilator and chest curiass were designed to operate as
Definition
negative pressure ventilators
Term

true or false

there are two types of pneumatically powered ventilators: pnuematic and fluidic

Definition
true
Term
true/false:  most current icu vents use gas to provide the driving force or flow to the patient, and they use an electrically powered microprocessor to control special valves that regulate the delivery of gas for inspiration and expiration
Definition
true
Term
true/false: closed-looped ventilator logic systems are called unitelligent because they cannot be programmed to respond to changing conditions
Definition

false

unintelligent ventilator systems are the open loop systems

Term

a drive mechanism for positive pressure ventilators includes all of the following except:

a. rotary drive piston

b. spring-loaded bellows

c. flow-controlling solenoid

d. chest cuirass vacuum

Definition

d. chest cuirass vacuum

this is a negative pressure system

Term

the major advantage of negative pressure vents is:

a. easse of patient trigger

b. tidal volume control

c. an endotracheal tube isn't required

d. access to patient chest

Definition

d. access to patient chest

there is no easy access with negative pressure systems

Term
if the internal circuit of a ventilator allows the gas to go directly from its power source into the patient, it is called a
Definition
single circuit ventilator
Term
a vent for which the primary power source genterates a gas flow that compresses another mechanism, such as a bag or bellows, and the gas contained in the bag or bellows goes to the patient is termed a
Definition
double circuit ventilator
Term

TRUE/FALSE

the exhalation valve in most icu ventilators is mounted inside the ventilator where it is not visiible.  An internally mounted exhalation valve is usually controlled by a mechanical device such as a solenoid valve

Definition
true
Term

ventilator compressors are capable of reducing or increasing internal volumes, resulting in a change in pressure.  These compressors can use any of the following mechanisms except

a. piston-driven mechanisms

b. rotating blades, vanes

c. moving diaphragms or bellows

d. all of the above

Definition
d. all of the above mechanisims can be used
Term
some ventilators have built - in air compressors.  These built in compressors can be used to power the ventilator when
Definition
a 50 psi air wall outlet is not available
Term

TRUE/FALSE

modern icu ventilators use flow control valves.  These valves control or direct gas flow by opending and closing either completely or in small increments

Definition
true
Term
flow control valves have a rapid response time and great flexibility of flow control. Flow control valves include.
Definition

proportional solenoid valves

sepper motors with valves

digital valves with on-off configurations

(they do not include piezoelectric valves)

Term
the clinician who operates a ventilator sets certain knobs or controls using a control panel to establish the pressure tan the pattern of gas flow directed from the device to the patient.  This statement best describes the
Definition
user interface
Term
a breath that is triggered, limited and cycled by the mechaniccal ventilator is what classification of breath
Definition

this is a mandatory breath.

 

not an assisted, not spontaneous and not synchrionized

Term
a breath that is patient triggered ventilator controlled and ventilator cycled is what classification of breath?
Definition

this is an assistad breath

not controlled (pt locked out)

not spontaneous and  not pressure supported

Term
a breath that is triggered, contolled and ended by a patient is which type of breath?
Definition

spontaneous breath,

not assisted, not controlled, not synchronized

Term
during pressure-controlled ventilation, the patient's airway resistance increases; this causes what to occur
Definition

the tidal volume will decrease

 

pressure will be unaffected,  the pressure is a preset unfluctuating level of cmh2o

Term
during Volume-controlled ventilation the patient's lung compliance improves; this causes what to happen?
Definition
tbe tidal volume will increase, improved lung compliance means more compliant, easier for the pressure to shove gas into the lungs, more distendable, they'll hold more gas which is being pushed into the lungs by a set/controlled pressure
Term
how many variable are there in mechanical ventilation and what are they
Definition
4:  pressure, flow, time and volume
Term
what variable begins the inspiratory phase of a ventilator breath?
Definition
the trigger variable
Term
the variable that ends the inspiratory phase is called what?
Definition
The cycle variable
Term
the two most common cycle variable for adult ventilators in cmv mode are
Definition
time and flow
Term
decreased lung compliance during time-cycled PCV will cause
Definition
decreased volume delivery
Term
decreased lung compliance during volume-cycled, volume-controlled ventilation will cause
Definition
increased airway pressure
Term
a ventilator variable that cannot be exceeded during inspiration is known as what
Definition
a limit
Term
the ventilator mode that is either patient triggered or time triggered and allows the patient to breathe spontaneously between mandatory ventilator breaths is known as
Definition
SIMV
Term
patients suffereing fromsleep apnea are most commonly treated with
Definition
cpap
Term
the amount of volume delivered to the lungs with pressure control mode is primarily dependant on
Definition
the compliance of the lungs
Term
pursed lip breathing can  be mimicked for an intubated patient by using
Definition
expiratory retard
Term

an I:E ratio that will provide the greatest amouont of time for exhalation is

a. 1:2

b. 1:3

c. 3:1

d. 1:4

Definition
d. 1:4
Term

the inspiratory pause is occasionally used to help

 

 

 

Definition
increase the peripheral distribution of gas and improve oxygenation
Term
expiratory retard  would be most benefical for a patient who suffers from what disease
Definition
emphysema/obstructive/
Term
PEEP is the application of pressures above ambient to improve oxygenation in the spontaneously breathing patient
Definition

false

peep increases surface area in the alveoli, improving gas exchange

Term
a ventilator that develops a constant (square wave) flow pattern that is not influenced by changes in compliance or resistance is a
Definition
constant flow generator
Term
which of the following variables causes the ventilator to begin expiration?
Definition
cycle variable
Term
which variable causes the ventilator to start inspiration
Definition
trigger variable
Term

i:e ratio if

rr 15bpm

Ti: 1.5 secs

Definition
2.5 seconds, 1:1.67
Term
which variable sustains inspiration
Definition
limit variable
Term
which of the following would you use for a trauma victim with a crushed chest injury
Definition
a volume cycled ventilator
Term
a patient is receiving vc-cmv his pao2 is only 51mmhg on fio2 of 100% and 15cmh2o of peep, his current alveolar pressure is 45cmh2o what would you now suggest to improve his oxygenation without causing lung damage
Definition
switch to pc-cmv with 25 cmh2o set pressure, using 15 peeop and fio2 of 100%, allow the patient's paco2 to increase if necessary
Term
the ventilator mode that is either patient triggered or time triggered and allows the patient to breath spontaneously between mandatory ventilator breaths is known as
Definition
SIMV
Term
patients suffering from sleep apnea are most commonly treated with
Definition
cpap
Term
the mode of ventilation used for noninvasisve postive pressure ventilations is
Definition
BiPAP
Term
a patient is being ventilated with vc-cmv mode.  if the ventilator rate is decreased what should be anticipated in the absence of patient triggering
Definition

increase in patients' paco2 and decrease in alveolar ventilation

rr will decrease/causing co2 to rise

increase co2 causes decrease in alveolar ventilation

Term

during vc-cmv which will increase peak pressure

1. increased airway resistance

2. decreased airway resistance

3. increased lung compliance

4. decreased lung compliance

5. increased inspiratory flow rate

6. decreased inspiratory flow rate

Definition
1. 4 and 5
Term
75kg ibw male patient on mechanical ventilation has the follwoing blood gases and ventilator settings: ph 7.46, Vt - 1000ml, paco2-33mmhg, vc-simv- 6bpm, patient rr 13 bpm pao2 66 mmhg fio2 60% and hco3 25meq/l and peep of 0 appropriate thereapy would be to
Definition
adjust and decrease the Vt,   1000ml is too much for  a75kg male to initially ventilate with
Term
a clinican has set a ventilator so that th inspiratory time is 33% of the total cycle time.  this would result in an I:E ratio of
Definition

1:2

 

33% is 1/3, there are 3 thirds in a whole, 

one for Inspiration and two for exhalation

Term

psv modes of ventilation include all of the following except:

a. vc-simv

b. vc-cmv

c. psv

d. mmv

Definition

b. volume control - controlled mandatory ventilation

 

all other modes are spontaneous

Term

 

TRUE/FALSE

\dual control pressure ventilation, with a breath by beath volume target is currently available on the majority of nwer genteration ventilators.  This mode ocmes in two forms: pressure-regulated volume control and volume support both are entirely spontaneous

Definition
False
Term
a patient has a strong respiratory drive and is intubated to protect his airway what would be an appropriate mode for this patient?
Definition
PSV with an inspiratory pressure of 15cmh2o
Term
a patient who is triggering each inspiration for a ventilator in the VC-CMV mode will be able to establish her or her own
Definition
frequency and minute ventilation
Term
a patient being maintained in the pc-simv mode will
Definition
recieve a mechanical breath at preset time intervals
Term

psv, when appropriatedly set, results in all of the folowing advantages except

a. the inspiratory phase ends when a preset minimal flow is reached

b. the resulting Vt remains constant

c. each breath is patient triggered

d. the peak flow is determined according to patient inspiratory demand

Definition
b. the resulting Vt remains constant.   Volume changes in pressure control
Term

TRUE/FALSE

psv should be avoided in patients with ventilatory muscle fatigue and when a patient has a high work of breathing

Definition
true
Term
equatation for Ve
Definition
rr x Vt=Ve
Term
what are the calculations for BSA
Definition

female 3.5 x bsa - Ve

male  4.0 x bsa - Ve

 

Term
what is the calculation for Vt on the servo 900c
Definition
Ve/RR = Vt
Term

placing asthmatic on mv, according to pilbeam and nbrc what Vt rages would you choose and are there any other considerations (hint there are two)

 

Definition

Vt 8-10 ml/kg/ibw

RR:

 

Te: exhalation time longer tan normal for better more adequate exhaling, reduces airtrapping

Term
lower flow rates will do what to the inspiration time
Definition
increase the inspiration time
Term
high flow rates will effect a mechanical breath in three ways:
Definition
Term
two constant flow patterns are:
Definition
square and retangular
Term
rr 20, set Ti% of 20 and pause time % 5, what would I time be and I:E ratio be?
Definition

60/20=3tct

i:.75

e=2.25sec

ratio 1:3

Itime is 20%+5% = 25% (.35 x 3sec)

Term
which vent is controlled by fludic  logic
Definition
sechrist Iv 100B
Term
according to equation of motion of respiratory system a ventilator can control all of the following variables except
Definition
resistance
Term

if the pressure waveform of a ventilator remains the same when a patient's lung mechanics change then what is the ventilator?

 

Definition
pressure controller
Term

which of the following are caracteristics of a ventilator that functions as a true volume controller:

a. its pressure waveform changes with changes in lung mechanics

b. it measures and uses volume to control the volume waveform

c. its volume waveform stays constant with changes in the lung mechanics

Definition
all of the above
Term

which of the following are characteristics of a ventilator that functions as a true volume controller

1. its pressure waveform changes with changes in lung

2. it measures and uses volume to control the volume waveform

3.  its volume waveform stays constant with changes in the lung

Definition
1 & 3
Term

which of the following are characteristics of a ventilator that functions as a true volume controller

1. its pressure waveform changes with changes in lung mechanics

2.  it measures and uses volumes to control the volume waveform

3.  its volume waveform stays constant with changes in lung mechanics

Definition
1, 2 and 3
Term
when you adjust the pressure drop necessary to trigger a breath on a ventilator what are you adjusting on the machine?
Definition

sensitivity

normally set -1cmh2o to -2cmh2o

Term
all ventilators offer a mode that intermixes spontaneous breathes with ventilator breaths, this is called
Definition
SIMV/IMV
Term
all adult ventilators offer a way to augment spontaneous breaths with a boost, this is called
Definition
pressure support
Term
all adult ventilators offer the choice of ________controlled ventilator breaths and____________ controlled ventilator breaths for any  mode that offers a machine breath
Definition
pressure  volume
Term
when a rate control (rr) is used _____ and _______ times will vary according to control settings such as _________ and _______
Definition

I time and E time

volume and flow

Term

indications for mechanical ventilation include all of folowing except

a. apnea

b. acute ventilatory failure

c. severe oxygenation deficit

d. metabolic acidosis

Definition

d. metabolic acidosis

 

Term

hazards of mechanical ventilation include all of the following except

a. o2 toxicity

b. volutrauma and barotrauma

c. permissive hypercapnea

d. compromised cardiac output and right heart venous return

Definition
c. permissive hypercapnia
Term

TRUE/FALSE

reducing wob for a short period of time may be a secondary indication for mechanical ventilation

Definition
true
Term

TRUE/FALSE

hypoxemic ventilatory insufficiency accompanied by hypocarbia and tachypnea should not be an indication for mechanical ventilation

Definition
false
Term
ED patient, presents w/paralysis of lower extremities/progressivly worsening, VC is 12ml/kg MIP is -24cmh2o, spo2 is 92%.  ABG are not avail yet, GB is suspected what therapy is patient most likely going to require
Definition
Intubation and mechanical ventilation
Term
which conditions affecting the CNS are associated with reduced drive to breath
Definition
general anesthesia, stroke, narcotics
Term
a fvc of less than ____________ indicates the patient  may need ventilatory support
Definition
15ml/kg
Term
pt in ed, mva, unconscious and nonresponsive, abg on nonrebreather show a pao2 of 45mmhg, paco2 of 93mmhg and ph of 7.09 what will recommend
Definition
intubation and mechanical ventilation
Term
a pt with hx of copd and co2 retention is admitted to the ed by ambu, on a partial rebreather, he is sleeping but rouses when talked to.  He remains lethargic, hr is 100bpm, bp is 128/78mmhg, rr is 5bpm, bilateral crackles and wheezes but diminished, immediate treatment recommendation
Definition
change to a venturi mask and coach the patien to breathe
Term
what is the most sensitive test or procedure to predict the need for mechanical ventilatory supoprt for a patient with acute neuromuscular disease
Definition
maximum inspiratory force MIP
Term
critical value for miP
Definition
< -20 cmH20
Term
an adult pat o2 NC 6lpm abg ph 7.29, paco2 79mmhg, hco3 39, be 11, pao2 87mmhg and sao2 95%, most appropriate tx re
Definition

decrease FIO2 and monitor patients ventilation

 

Term
before beginning ventilatory support for a patient with chronic bronchitis, the blood gas results in the ed are paco2 of 78mmhg and ph of 7.31.  after 1 hour of mechanical ventilation, the following statement is true
Definition
patient is hyperventilated beyond her normal paco2 level
Term

calculate Ve if Vt is 500ml and rr is 12

 

Definition
.5 x12 = 6 l/min
Term
define a closed loop system
Definition
closed loop system aka intelligent system senses monitors the patient's need for ventilation.
Term
three synonyms for volume ventilation
Definition
volume targeted, volume limited, volume controlled
Term
primary variable used by ventilator to cause inspiration is
Definition
control variable
Term
four phases of breath
Definition

1. change from exhalation to inspiration

2. inspiration

3. change from inspiration to exhalation

4. exhalation

 

Term
during volume controlled ventiation the patient's lung compliance improves: what happens
Definition
Term
name five clinical objectives for MV
Definition

reverse acute respiratory failure

reverse respiratory distress, reverse hypoxemia, prevent or reverse atelectasis, maintain FRC, reverse respiratory mucle fatique, permit sedation or paralysis, reduce myocardial o2 consumption,

Term
what pulmonary disease causes increased airway resistance and results in increased WOB
Definition
asthma, epiglottis, emphysema, chronic bronchitis, croup,
Term
SIMV psoitive airway pressure, mandatory berathes during mechanical ventilation can normally be cycled into expiration by which 2 control variables
Definition
time and flow
Term
a mode of ventilation that provides a constant postive pressure during inspiration to a spontaneously breathing pat and also helps reduce the wob through ett and circuit is
Definition
PSV
Term
if the pressure waveform on the vent remains the same when the pt's lung mech. change then the ventilator is in
Definition
pressure controll
Term
if a ventilator not the patient initiates a breath, what is the trigger variable
Definition
time
Term
a ventilator that controls flow and delivers a rectangular flow waveform will also exhibt what wave form
Definition
rectangular pressure
Term
partial vent. support is
Definition
mv is set at or at rates lower than 6bpm and the patient participates in WOB  the help maintain effective alveolar ventilation.  weaning mode
Term
when is PSV used and name two modes of PSV
Definition

PSV is often used when attempts are made to wean a partient off the vent, two modes of PSV are SIMV & PSV

 

 

Term
name the three types of breaths
Definition

mandatory breath

spontaneous breath

assisted breath

Term
there are three breath delivery techniques, they are
Definition

continuous mandatory ventilation

SIMV and spontaneous mode

Term
what are the three triggers of assist control (A/C) ventilation
Definition
time or patient
Term
two  common problems of cmv ventilation
Definition
patient triggered modes  are releated to ventilators  sensitivity settings and response times can cause auto triggering and breath stacking,  or inappropriately set so that patient's wob is to great
Term

what is volume targeted cmv

 

Definition

vc-cmv

when volume is set as the control variable, the pressure (PIP) will change with changes in the lungs compliance

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