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O2 delivery devices

high flow and low flow

QuestionAnswer
SpO2 Adults 94 - 100%
SpO2 Newborns 91 - 96%
PaO2 Adults 80 - 100 mmHg
PaO2 Newborns 50 - 70 mmHg
SpO2 definition saturated partial pressure of Oxygen
PaO2 definition partial arterial pressure of Oxygen measured in mmgH
Hypoxia Low O2 in tissue
Hypoxemia Low O2 in blood
Calculate normal PaO2 for age 110 - 1/2 age= expected PaO2
Supplemental O2 For every 1% increase in FiO2, expect an increase in PaO2 of 4 mmHg
Physicians RX order for O2 includes: Name of Device Duration Frequency Flow or % concentration
If you get the wrong order for O2? Ask physician to change and suggest something else
Concerns when using masks Aspiration Uncomfortable Eating
Humidifier Will help air become more wet so it does not dry patients nose out
Humidifier effects of back pressure Build up of pressure due to kinks and will cause the pop off valve to scream
O2 use in COPD patients 60-70 mmHg Treatment with low concentration (hypoxic drive) of O2 to achieve PaO2 of 50 to 65 torr Patients with PaO2 >65-70 torr will reduce DRIVE of breath
O2 cannula Most commonly used: - convenience - easy to use
O2 cannula Flow/FiO2 Flow: 1-6 l/min FiO2: 24-44%
Simple Mask Flow/FiO2 Flow: 5-10 l/min FiO2: 35-50%
Simple Mask Minimum flow of 5 L/min to wash out CO2
Non-Rebreathing Mask Flow to keep bag inflated, not totally collapse Effects on FiO2 If bag deflates increase flow or change device
Non-Rebreathing Mask Flow/FiO2 Flow: 10 L/min FiO2: 40-70%
Low Flow systems qualifications... 300-700 ml tV < 25 RR Normal breathing pattern Cant guarantee FiO2
High Flow systems... Can guarantee FiO2 despite ventilation or breathing patterns
Total Flow Calculation 100-x/ x-20 or 21
Minute Ventilation RR x Tv
Peak Inspiratory Needs 3 x MV
How to make sure device meets patients inspiratory needs... If MV x 3 is LESS than your total flow
Effect of Increased flow on flow on air entertainment mask... Doesn't change % concentration but TOTAL FLOW to patient
Created by: Dbencun0323