Typical Questions And Answers About Pulsedose; User Care & Maintenance; Troubleshooting - DeVilbiss PD1000A Series Instruction Manual

TYPICaL qUESTIONS aND aNSwERS aBOUT PULSEDOSE

Q. How Does A Conserving Device Work? How Does It Know When I'm Inhaling?
A. When inhaling, your diaphragm moves down and causes a drop in pressure in the lungs. Air flows in through the nose and mouth to equalize the pressure. This negative pressure is
also present at the nose and mouth during inhalation. This pressure signal travels through the nasal cannula to a pressure sensor in the conserving device. A mechanical or electronic
circuit then opens a valve to deliver a precisely metered dose of oxygen. When the valve is closed, the sensor is ready to detect the next inhalation.
Q. The Pulse(s) Seem So Short. Am I Really Getting Enough Oxygen?
A. Yes. PulseDose delivers an internally controlled precise burst of oxygen at a relatively high flow rate at the leading edge of each inhalation. This assures that the oxygen delivered flows
deep into the lungs for maximum benefit. PulseDose requires less oxygen to deliver the same therapeutic benefit as continuous flow oxygen delivery.
Q. I Can't Hear The Pulse. Is PulseDose Working?
A. If the pulse can't be heard, simply look at the green PulseDose indicator to see that the device is being triggered by inhalation. For further assurance, hold the end of the cannula in
front of your lips while inhaling through your mouth and feel the pulse. PulseDose does not monitor the supply of oxygen. Remember to check the oxygen contents gauge periodically
to verify that there is an adequate oxygen supply. If the oxygen supply runs out, the green PulseDose indicator light will continue to illuminate, indicating that the conserving device is
being triggered by inhalation.
Q. Why Can't I Use A Cannula Which Is Longer Than 35 Feet With PulseDose?
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; they find that PulseDose improves
comfort because it delivers oxygen by pulse 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, the devices still deliver 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.
USER CaRE aND MaINTENaNCE
The unit should be kept clean and free from moisture and dust. Clean the unit at least weekly by wiping with a dry, lint-free cloth. Avoid getting fluids or debris such as sand or dirt inside the oxygen
connections. Do not immerse in water. Do not clean with a solvent based cleaning solution. Avoid dropping the unit or placing it in a position where it could topple or fall since this can damage the
device. Whenever possible, use a padded carrying bag such as those listed in the Accessories section to carry the unit. This will help to protect it in case of a fall. The unit should be protected from
extreme temperatures. Do not attempt any other maintenance.
STORaGE & HaNDLING waRNINGS
Do not place oxygen cylinders in unventilated spaces such as car trunks. Excessive heat can make the relief valve suddenly and quickly discharge the cylinder contents, possibly
making it a projectile and greatly increasing the oxygen level in unventilated spaces.
Do not leave oxygen cylinders in the cabs of vehicles without ventilation. If a cylinder leaks, a spark could start a fire causing serious injury or death.
Remove cylinders from the vehicle when the destination is reached.
Heat, Humidity, Sun and Artificial Light have no effect on operation as long as the device is used within the product specifications.
Be sure to secure cylinders from movement during transport.
This device contains electrical and/or electronic equipment. Follow local governing ordinances and recycling plans regarding disposal of device components.

TROUBLESHOOTING

waRNING
Do not attempt to open the device for maintenance or repair. The device contains no user-serviceable parts. Do not attempt any other maintenance. Contact your oxygen provider if
service is required. If you do not have a healthcare provider, refer to the DeVilbiss contact information on the back of this guide.
Symptom
Oxygen is not being delivered even though the
indicator is flashing every time I breathe.
Use times are different from those stated in the
literature.
PulseDose will not pulse
PulseDose works fine for a couple of minutes, then
sensitivity seems to drift and may stop working
altogether.
Green and Red LED's do not illuminate when the unit
is turned "ON".
On PD1000A-CAN-XX, unit begins to "beep" about 15
seconds after being turned "ON".
Red light flashes when breath is detected.
Red light stays on continuously. Unit will not pulse.
A-535-CYL
Possible Causes
1. Oxygen supply is empty.
1. PulseDose responds to your breath rate. Your breath
rate may vary, which causes the operation time to vary.
2. Leak in system
1. Cannula is not attached properly.
2. Unit is not turned on.
3. Batteries discharged or not installed.
4. Mouth breathing with closed soft palates.
5. Unit did not reset while changing batteries (red light
stays on).
1. Using pediatric cannula or any cannula that restricts
continuous flow capacity of 10 lpm.
1. Batteries discharged or not installed.
2. Unit defective.
1. Cannula is not attached properly.
2. Unit defective.
1. Battery charge is low.
1. Battery charge is depleted.
Remedies
1. Check contents indicator on the device. If empty, switch cylinders.
1. PulseDose is operating correctly.
2. Contact your DeVilbiss Provider.
1. Check all cannula connections to make sure they are tight, and adjust
the cannula to fit comfortably in your nose. Ensure tubing is not kinked.
2. Turn the rotary selector to the appropriate setting.
3. Install new batteries.
4. Breathe through the nose (cannula).
5. Turn the unit off and back on using the rotary selector.
1. Replace with standard nasal cannula.
1. Install new batteries.
2. Contact your DeVilbiss Provider.
1. Check all cannula connections to make sure they are tight, and adjust
the cannula to fit comfortably in your nose. Ensure tubing is not kinked.
2. Contact your DeVilbiss Provider.
1. Replace/recharge (when applicable) batteries.
1. Replace/recharge (when applicable) batteries.
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