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Discussion in 'Internship' started by gretel, Apr 26, 2007.

  1. gretel

    gretel New Member

    how do I calculate the oxigen amount for oxigentherapy in a COPD patient????
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  3. AF_PedsBoy

    AF_PedsBoy Stuffed Animal Overlord 5+ Year Member

    Jun 22, 2004
    whut's this oxigen thing? oxygen wit an electron removed?? If you using oxygen mebbe try turning it up until he not turning blue...
  4. Tired

    Tired Fading away 7+ Year Member

    Dec 12, 2006
    What's to calculate?
  5. Winged Scapula

    Winged Scapula Cougariffic! Staff Member Chief Administrator Administrator Physician Faculty Lifetime Donor Classifieds Approved 15+ Year Member

    Apr 9, 2000
    hSDN Member
    Awww....c'mon appears the OP is in Ecuador and English is probably not her first language.

    There is no one right number to set the FIO2 for a COPD patient, but they likely survive daily at lower oxygen sats than the rest of us...turn it up too high and they lose their drive to breathe.
  6. Gokhu

    Gokhu Banned Banned

    May 6, 2007
    Room oxygen fiO2 is appox. 21%. If nasal canula used, add approx. 3% for each additional Liter. Nasal canula maximum is 40%. The same applies to face mask (maximum 55%) and CPAP (up to 80%). Endotracheal incubation maximum is 100%

    Also check out it is in it's beta version, but it is free.
  7. Freibi

    Freibi 2+ Year Member

    Nov 13, 2006
    Black Forest
    Not everybody believes in the losing-the-drive-to-breathe-story, but who wants to be the one messing up? If things get serious, your patient will be more likely to die from hypoxia than low CO2 (yes, if the promoters of the story are correct, you may need to bag mask ventilate or intubate them, but at least the patient survives).
    So, watch your patient carefully. With nasal cannulas and face masks, it is hard to get a really accurate measurement of O2 supply anyway, you can just use the numbers to follow a given patient over time.

    Please correct me if I`m wrong.
  8. DeLaughterDO

    DeLaughterDO Ghost in the Machine 10+ Year Member

    Jun 26, 2004
    State of Being
    I'm one who certainly believes the story, because I've seen it happen on more than one occasion.

    Generally, patients with severe enough COPD to require oxygen are accustomed to a lower oxygen tension in their blood and walk around on a day-to-day basis with a SpO2 in the low to mid 80s.

    On an inpatient, I will usually aim to keep a COPD patient's SpO2 between 88 and 92%. The nurses don't like that, though, so when one goes into the room to examine the patient, make sure the O2 hasn't been turned up too high.

    Outpatients who are on O2 at home (whether continuous or intermittent or nightly) obviously do not get monitored. In the US, in order for medicare to pay for O2 at home, the patient must have a resting or exercise SpO2 < 88%, which must be demonstrated and documented. Again, usually the goal with oxygen is to keep the SpO2 above 88%.

    Hope this helps.

  9. colbgw02

    colbgw02 Delightfully Tacky 10+ Year Member

    I'm sure you know this, but it really doesn't have anything to do with what the patient's usual O2 level is. It's their usual CO2 level that requires keeping their O2 saturation lower than in a healthy person.
  10. DeLaughterDO

    DeLaughterDO Ghost in the Machine 10+ Year Member

    Jun 26, 2004
    State of Being

    As a patient becomes more hypercapnic, the respiratory centers become accustomed to higher CO2 levels and the drive to breathe is regulated by lower O2 levels, rather than CO2. However, it is still important to maintain adequate oxygen levels - it just so happens that "adequate" is adjusted downward a bit in those with chronic hypoxic lung disease...
  11. gallant2m

    gallant2m Member 7+ Year Member

    May 30, 2004
    just in case the OP was talking about this is:

    RA is 21%,every 1 liter of o2 via Nasal cannula adds 3%. Only calculation as far as i can see.

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