Typical Questions & Answers
13
Q. Why can’t I use a cannula which is longer than 35 feet?
A.
The PulseDose triggering is not significantly affected by the cannula
length, but the delivery of oxygen is affected. If the cannula is longer
than 35 feet, the pulse of oxygen is delayed. Remember the therapeutic
moment during the inhalation cycle. If the oxygen is not delivered during
this time, the benefits will not be realized.
Q. I’ve always used humidifiers with oxygen. Should I use a humidifier
with PulseDose?
A.
No. PulseDose is not able to sense inhalation through the water in the
humidifier. Also, many patients find that humidification is not necessary
with PulseDose. They find that PulseDose improves comfort because it
delivers a very small amount of oxygen during the early part of
inhalation, while the rest of the inhalation is composed of normal room
air.
Q. When I’m breathing faster, I don’t get a pulse with each breath.
Don’t I need a dose every time?
A.
Because PulseDose breathes with the patient, it has an upper limit (40
Breaths Per Minute) that keeps you from getting too much oxygen. When
breathing slowly, you receive a dose with every breath. As breath rate
increases (up to 40 BPM) PulseDose still delivers a dose with every
breath. At this point, you are getting more oxygen per minute because
each pulse delivers the same amount of oxygen with each breath while
the number of breaths has increased. With continuous flow oxygen, the
oxygen delivered is constant. As you breathe faster, the enrichment of
inhalations actually decreases because each breath is being diluted with
a greater amount of room air.
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