PEEP valve with a CUFFLESS trach?

  1. 0
    Can some one please explain to me the value of a PEEP valve with a Cuffless Portex 5.5mmID Pediatric Trach?

    I thought that PEEP was only used with CUFFED trachs?

    This pt. is on a LP10 with .650 TV 0.8 insp time, HP 55, LP12, PEEP set at 4 but actual end resp readings are always 0....

    Can anyone give me "insite" as to why this may be? Pt. Mom is clueless. I work nights and Dr. won't call me back.
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  3. 5 Comments so far...

  4. 0
    Probably force of habit on the ordering physicians part, or RT's part.

    I can't see much benefit from it.

    Good luck

    Craig
  5. 0
    all of the pedi vents on my caseload are on peep(s) of 4-6 with uncuffed trachs...it really does help keep their po2 levels up...my understanding from the pedi pulmos is that while they do end up a 0 peep delays their getting there...keeping in mind that these kids are also on pressure support and/or simv. below is an excerpt that discusses/describes peep really well...i have based much of the vent class i teach on information from the website listed.


    http://www.mtsinai.org/pulmonary/boo...gy/chap10a.htm


    positive end-expiratory pressure
    for most ventilated patients, the machine* delivered fraction of inspired oxygen ( fio2) will provide an adequate pao2. when this fio2 is above 0.60 and the pao2 remains inadequate, positive end-expiratory pressure (peep) is often employed. peep is used only to improve the pao2, not the paco2. peep is an alteration of ventilator pressures so that airway pressure is positive (above atmospheric) throughout the breathing cycle. it may be used with any of the ventilatory modes discussed so far.

    peep was first introduced into clinical medicine in 1967 when physicians working in a denver intensive care unit described their experience with adult respiratory distress syndrome (ards) patients (ashbaugh, bigelow, petty, et al., 1967). two of the patients received peep on an empiric basis, and their pao2 improved. peep has since been used routinely in the management of ards. a pressure curve for peep is shown in fig. 10-6. normally, airway pressure at end*expiration is atmospheric (measured at the mouth); with peep it is above atmospheric. as commonly employed, peep pressures are usually between 5 and 20 cm h2o above atmospheric pressure.

    the mechanism by which peep improves oxygenation is not known for sure. since peep increases functional residual capacity, it probably leads to better oxygenation by preventing end-expiratory collapse (fig. 10*9). (lung water studies have shown that peep does not diminish total lung water, but just redistributes it within the alveoli. therefore peep cannot be considered a primary treatment for pulmonary edema.)

    it is important to recognize that peep is measured in the upper airways and does not equal airway pressure in the alveolus. the peep is considerably dissipated by the time it reaches the alveoli. yet it is the positive pressure at the alveolar level that both improves oxygenation and leads to complications. there is no practical way to know how much of the measured peep is present in the alveoli; the amount of dissipation depends on complex factors, including lung compliance and airways resistance. nonetheless, as learned by experience and observation, a peep of less than 10 cm h2o usually improves pao2 without significant complications; above this level, peep is more likely to be accompanied by complications, either barotrauma or a decrease in cardiac output (discussed later in this chapter).

    the high and low pressue settings you list are pretty freaky (to me) to see in a kido...what is this childs age and dx? is s/he vent dependant?
  6. 0
    THANK YOU!! I feel much better!!!
  7. 0
    This "kid" is 20. He is Guillian-Barre Syndrome< Sp..,
    and "forgets" to breathe while he sleeps. He also has "bad days" where he never does get weaned off the vent for the day. Usually thick secretions are the culprit. We do 4 full rounds of MANUAL postural Drainage on him a night. Mom won't let us use the new "Vest" she feels it "plugs " him up. Can you say FRUSTRATION?????
  8. 0
    OMG!

    Problem #1 is the PEDIATRIC 5.5 trach!!! He's breathing thru a drinking straw, cheez...no wonder he plugs, has secretion problems and has days where he doesn't want to wean.

    He would be so much more comfortable with a "big boy" trach.

    What is his mental status? is he A&O?...at 20 yo 'Mommy Dearest' doesn't get to say what you do.


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