Dismiss Notice
SDN members see fewer ads and full resolution images. Join our non-profit community!

Help!!!!!

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

  1. gretel

    gretel New Member

    Joined:
    Jun 3, 2006
    Messages:
    6
    Likes Received:
    0
    Status:
    Medical Student
    how do I calculate the oxigen amount for oxigentherapy in a COPD patient????
     
  2. Thread continues after this sponsor message. SDN Members do not see this ad.

  3. AF_PedsBoy

    AF_PedsBoy Stuffed Animal Overlord

    Joined:
    Jun 22, 2004
    Messages:
    714
    Likes Received:
    3
    Status:
    Attending Physician
    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

    Joined:
    Dec 12, 2006
    Messages:
    3,886
    Likes Received:
    772
    What's to calculate?
     
  5. Winged Scapula

    Winged Scapula Cougariffic!
    Staff Member Administrator Physician Faculty Lifetime Donor Classifieds Approved

    Joined:
    Apr 9, 2000
    Messages:
    38,219
    Likes Received:
    26,052
    Status:
    Attending Physician
    Awww....c'mon now...it 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

    Joined:
    May 6, 2007
    Messages:
    5
    Likes Received:
    0
    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 www.floeos.com it is in it's beta version, but it is free.
     
  7. Freibi

    Joined:
    Nov 13, 2006
    Messages:
    132
    Likes Received:
    2
    Status:
    Fellow [Any Field]
    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

    Joined:
    Jun 26, 2004
    Messages:
    949
    Likes Received:
    6
    Status:
    Attending Physician
    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.

    jd
     
  9. colbgw02

    colbgw02 Delightfully Tacky

    Joined:
    Dec 9, 2004
    Messages:
    4,321
    Likes Received:
    2,438
    Status:
    Attending Physician
    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

    Joined:
    Jun 26, 2004
    Messages:
    949
    Likes Received:
    6
    Status:
    Attending Physician
    Correct.

    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

    Joined:
    May 30, 2004
    Messages:
    55
    Likes Received:
    0
    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.
     

Share This Page