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resp 9-10

Oxygen Therapy Equipment

Goals of Oxygen Therapy 1. treat hyoxemia 2.Decrease WOB 3. Decrease Myocardial work 4.Lab measures 5clinical problem 6. signs and symptoms
High Flow system meet all the inspiratory need or requirements; usually greater than 60 lpm.
Examples of high flow systems venturi mask (air entrainment mask, CPAP system, ventilator, oxyhood, T-Tube flowby (briggs adaptor)
Low Flow system not able to meet all the patients flow or volume needs (inspiratory needs)
Low flow system can deliver FiO2 dependant on RR and volume, proper fit, flow rate, peak insp flow rate
Examples of low flow system masks (simple, PRB, NRB), nasal cannula or catheter, tracheostomy collar, oxygen tent
You choose which one to use by pt comfort, desired FiO2 to obtain desired PaO2, required control or precision of FIO2, Humidity needs, type of patient, age
Desired FIO2 (desired PaO2 x current FIO2)/current PaO2
How to estimate pt insp needs MV x 3 = insp peak flow
Total flow TIC TAC TOE CHART top left alwayys 100% bottom left always 20%
Non rebreathing mask FiO2 up to 70%; highest without intubating them.
rebreathing mask FIO2 up to 60% (remove valve from mask)
trach mask FIO2 varies (8-12 lpm)
oxygen tent FIO2 40-50% (12-15 lpm)frequent opening and closing of tent causes wide swings in O2 concentration. Temp is lowered by 10-12 degrees
oxyhood FIO2 21-100% (7- or greater lpm)
What determines the delivered FiO2 on the entrainment port? the size The larger the port the lower the FIO2 The smaller the port the greater the FIO2
What else determines the fiO2? The size of the jet The smaller the jet the lower the fio2
CPAP USED FOR PATIENTS WITH DECREASE FRC Continuous positive airways pressure. Used to force air into the nasal passage. Useful for patients with sleep apnea, respiratory distress.
How does CPAP work? Air is pushed from the flow generator throught the tubing, the air passes thru nose and into throat, where the slight presure keeps the upper airway open.
CPAP criteria must be able to breath on own. Beneficial: open collapsed alveoli, decreased WOB, improved distribution, potential increase in secretion removal.
CPAP complications barotrauma, gas in the stomach, decrease venous return
Vapotherm the power of flow. Makes flows 1-40 lpm Tempature ranges from 33-43 C
Anatomical deadspace in airways that does not participate in gas exchange, estmated approx 1ml/lb of IBW (150ml)
Alveolar dead space volume of gas ventilating unperfused alveoli
Mechanical dead space volume of expired air that is rebreathed through a connecting apparatus or tubing
galvanic fuel cell analyzer reads more to partial pressure, it actually measures PO2 NOT fio2 Can be within +-2 --most common cause of malfunction= low batteries
Goal of humidity to minimize or eliminate a humidity deficit while the patient is breathing a dry medical gas
Definition of inspissated being thick, dry or made less fluid by evaporation
nebulizer solid or liquid particle suspended in a gas that acn be measured and counted
Pulse Oximitry measures oxygen saturation of Hb in the blood. measures at greater than 80% match with HR if troubleshooting
Created by: TnJFarrington12