Engler ADS 2000 - Understanding Key Parameters; Minute Volume and Breath Analysis; Safety Features and Operation Stops

NOTE: A square BLACK cursor moving across a WHITE background indicates that the breath
was initiated by the ADS 2000. Whereas a square WHITE cursor moving across a BLACK
background indicates that the patient initiated the breath.
c. Inspiratory Time, (.73 seconds in this case)
6. The bottom line of the LCD readout shows the following parameters:
a. Flow Rate, (24 Liters Per Minute in this case).
b. Breaths Per Minute, (7 Breaths per minute in this case).
c. Peak Inspiratory Pressure, (15 cm. of H
2
O in this case).
d. Assist (Inspiratory Effort), (-3.0 cm. of H
2
O in this case).
7. The ADS 2000 will now wait until either the patient initiates a breath, either by
giving an inspiratory effort of equal or greater than the ASSIST value
(-3.0 in this case), or until it is time for the A.D.S 2000 to give the next breath
(computed by the microprocessor), it will then repeat the cycle.
NOTE: If pressure in the system increases between breaths, a built in safety feature will
cause the ADS 2000 to allow an "exhale" (pop-off) , i.e. the exhale valve opens to allow
pressure to escape. This would happen, for instance, if the surgeon leaned on the
patient's chest. It can also happen if the patient tries to exhale after he has already
exhaled a tidal volume. You will hear the exhale valve open and close rapidly. This is
normal.
To temporarily stop the ADS during a procedure, place the SET / RUN switch to
"SET". Doing so will hold the current parameters, the current breath will be completed
and the machine will stop. To continue ventilation, switch back to "RUN".
UNDERSTANDING THE MINUTE VOLUME NUMBER
1. Since blood gas analysis is not always available, we provide a Minute Volume
Number as a guide, to know if you are properly ventilating the patient. A properly
ventilated patient should require from 150 to 250 ml. / minute / Kg. The 150 ml. /
minute / Kg. number is appropriate for larger patients and the 250 ml. / minute/ Kg.
number for smaller patients. In general, it is better to over ventilate rather than
under ventilate a patient.
NOTE: The Minute Volume per Kilogram number becomes useful after the patient has
stabilized. It will require a few breaths for this stabilization to take place, and then you will
see the Minute Volume per Kilogram number fluctuate slightly between breaths.
ADS 2000 Engler Engineering Corporation 15