Gradian CCV, Руководство пользователя

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Pressure Control with Assist (Pressure AC)
In Pressure Control the ventilator delivers flow to the patient until a set
pulmonary pressure is achieved. The flow rate is variable and slows
down as the pressure target is approached so that it is not exceeded.
The ventilator calculates flow to achieve the target pressure during the
predetermined inspiratory time.
Similar to Volume Assist, in this mode the ventilator will react to
patient-triggered breathing and ensure that the same pressure is
reached for both patient- and ventilator-triggered breaths.
Volume Synchronized Intermittent Mandatory Ventilation (SIMV)
Pressure Synchronized Intermittent Mandatory Ventilation (SIMV)
Like Assist Controlled ventilation, SIMV delivers a specific, preset
number of breaths to the patient. In SIMV, if a patient initiates a breath
in between regularly scheduled machine breaths, the ventilator will not
deliver a preset tidal volume or airway pressure. Rather, it allows the
patient to draw in as much air as they are able without assistance. The
ventilator recognizes this patient-triggered breath and adjusts the
timing of the mechanically-delivered breaths, thus synchronizing the
pre-set breathing schedule to the variable patient-initiated breaths.
Otherwise, the volume and pressure ventilation modes with SIMV are
similar to those with assist.
In addition to the regular settings, the clinician can also use Pressure
Support for either volume or pressure SIMV. When activated, pressure
support recognizes the intermittent, patient-triggered breaths and
ensures the clinician-defined airway pressure is reached.
Continuous Positive Airway Pressure (CPAP)
In CPAP the ventilator provides a set level of pressure throughout the
respiration cycle. It will dip for a fraction of a second at the beginning
of inspiration and increase slightly for a fraction of a second at the
beginning of expiration. It is used for patients who are spontaneously
breathing and keeps the airways continuously open during respiration.
Bilevel Positive Airway Pressure (BiPAP)
BiPAP is a variant of CPAP that sets a different pressure for inspiration
and expiration. It is achieved on the CCV by choosing the CPAP
ventilation mode and then setting the Pressure Support option to a
higher level. As an example, setting Pressure Support to 15 and CPAP to
10 results in an airway pressure of 15 cmH
2
O during inhalation and 10
cmH
2
O during exhalation.