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T IMING ADJUSTMENT
(CA-3000, CA-3200 MODELS ONLY)
If the automatic feature of the CoughAssist MI-E is to be used, adjust the times as follows:
1. Each cough cycle consists of an inhalation phase, an exhalation phase and a pause
phase, after which inhalation begins again. The time for each phase is set with the
three knobs on the left side of the front panel. Normally, inhale time and exhale time
are set to 1 to 3 seconds and the pause time can be set up to 5 seconds, or eliminated
by setting the pause time knob to 0 seconds, depending on the patient’s preference.
2. Set the manual/auto switch to the auto position and observe that the unit cycles from
positive to negative pressure, then to zero pressure, and repeats until the switch is set
back to manual. When set to the manual position, the unit should return to 0 cm H
2
O.
T
REATMENT
Treatment usually consists of 4 or 5 coughing cycles in succession. The patient is then
allowed to rest for 20 to 30 seconds, which helps avoid hyperventilation. The cycles can
then be repeated 4 to 6 times for a full treatment.
WARNING: Always check time and pressure settings before each treatment.
Manual Operation (All models):
1. Attach the appropriate patient interface to the patient.
2. Shift the manual/auto switch to the manual position (automatic models only). Shift
the manual control lever to the inhale position (to the right) and observe the pres-
sure gauge to see the pressure build slowly over 2 to 3 seconds.
3. Rapidly shift the manual control lever to the exhale position (to the left) to induce
the cough, holding it there for 1 to 2 seconds. The lever can then either be left in
the neutral position for a few seconds, or can be shifted immediately to the positive
pressure phase for another cough cycle, depending on the patient’s preference.
4. After 4 to 5 cycles, remove the patient interface from the patient and allow time for a
normal breathing pattern to return (20 to 30 seconds), or place the patient back on
the ventilator if currently in use. Avoid prolonged periods connected to the device.
During this resting period, clear secretions that may have become visible in the
mouth, throat or tracheostomy tube.
O PERATING
P ROCEDURE
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