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P RESSURE
A DJUSTMENT
1. Turn on the power switch.
2. Set the inhale flow to full or reduced.
3. Attach the patient circuit to the unit and block the end of the breathing hose.
4. Set the manual/auto switch to manual (automatic models only).
5. Push the manual control lever to the exhalation phase (to the left). Observe the
pressure gauge on the device and adjust the maximum pressure (negative) using the
pressure knob to achieve the correct reading on the gauge.
6. Shift the manual control lever to the inhalation phase (push to the right). Adjust the
pressure reading by turning the inhale pressure knob to achieve the correct reading
on the pressure gauge (clockwise to increase pressure and counterclockwise to
decrease pressure).
7. Cycle the manual control lever from inhale (positive) to exhale (negative) and back
a few times to ensure that the pressure and suction readings are correct.
8. Release the manual control lever to ensure that the pressure immediately returns to
0cm H
2
O. If it does not, refer to the Maintenance Section of this guide.
Each individual patient may require special settings for the maximum positive
(inhalation) and negative (exhalation) pressures. For a patient using this
device for the first time, it is advisable to begin with lower pressures, such
as 10-15 cm H
2
O positive and negative, to familiarize the patient with the
feel of mechanical insufflation-exsufflation. During subsequent treatments,
pressures can be increased as necessary to achieve adequate secretion
clearance. See WARNING (page 4).
Note that at these lower pressures the CoughAssist MI-E may have limited effective-
ness in clearing secretions. Increasing pressures should improve the effectiveness.
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