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O2 delivery devices
high flow and low flow
| Question | Answer |
|---|---|
| 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
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