Description of ventilator 13
2.4 Controlled ventilation
Mandatory ventilation
stroke: the device, not the
patient, determines the
time of the next breathing
stroke.
After being switched on, the MEDUMAT Standard a
is automatically in Controlled Ventilation mode. This
administers mandatory ventilation strokes to the in-
tubated patient according to the ventilation values
set on the device.
2.5 Assisted ventilation
In addition to Controlled Ventilation mode, the
MEDUMAT Standard a also has an Assisted Ventila-
tion mode.
After you have switched on Assisted Ventilation
mode by pressing the
Assist key, a flashing green
LED indicates this mode.
Triggered ventilation
stroke: the patient can trig-
ger a ventilation stroke by
his own breathing efforts.
The patient now has the option of triggering a trig-
gered ventilation stroke within a time window of 40
% of expiration. To do so, the patient must generate
a flow of over 6 l/min. by his own breathing efforts.
If the breathing efforts of the patient are not suffi-
cient to trigger, the patient automatically receives a
mandatory ventilation stroke at the end of the time
window, so that the set minute volume is guaran-
teed.
With this function, the ventilation strokes of the de-
vice can be synchronised with the breathing efforts
of the patient.
IPPV: intermittent positive
pressure ventilation (= con-
trolled ventilation).
Between the mandatory ventilation strokes of the
device, the patient has the option of breathing in air
from the surrounding atmosphere via the patient
valve.
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