Gradian CCV, User Manual

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When using the CCV with a patient who poses an increased risk for fluid
buildup in the patient circuit, or for added protection against machine
contamination, an HME may also be placed on the Patient Circuit port
to protect the CCV.
WARNING: HMEs are not reusable. They should be replaced at least
every 4-6 hours for patients receiving ventilation and must be
replaced between patients to prevent cross-contamination.
Dead Space and Resistance
Components of the breathing circuit that contain volume may introduce
mechanical dead space (gas which is not delivered to the patient) into
the ventilation system. Too large of an apparatus dead space can affect
the oxygen and other gas levels delivered to the patient. The addition of
accessories may impact the dead space and must be considered when
configuring a breathing circuit.
This is particularly important when ventilating pediatric patients, as
increases in dead space will increase the work of breathing. For
pediatric patients, small increases in apparatus dead space lead to large
increases in the ratio between dead space and tidal volume. This can
lead to hypercapnia, requiring a larger minute ventilation to clear excess
CO
2
. When possible, accessories with lower amounts of dead space
should be used for pediatric patients.
Breathing Circuit Care
While the components of the breathing circuit are robust and durable,
care should be taken to prevent any damage in order to prolong their
usable life. Components of the circuit should never be used to drag the
CCV on its rolling stand. The circuit should not be allowed to touch the
floor, as this poses a danger of contamination and a risk for physical
damage.
WARNING: Ventilator patient circuits may become contaminated
during use. To prevent cross contamination do not reuse patient
circuits without proper disinfecting. Never reuse a “single patient
use” ventilation circuit.
For approved cleaning methods, see CLEANING AND STERILIZATION.