1, the appearance of the ventilator. The surface of the ventilator should be clean and free of dust and stains; the air filter (sponge cushion) of the ventilator's air inlet should be clean and free of dust blockage.
2, connected to the power supply, check whether the ventilator can operate normally, with the boot circuit self-test function of the ventilator should be able to pass the self-test.
3, connect the ventilator external pipeline. Including a threaded pipe and expiratory connector, the threaded pipe should be smooth, no water; confirm that the expiratory connector of the air outlet is smooth.
2. Select the ventilation mode and connect the simulated lungs.
Ventilator settings:
Set the initial ventilation pressure. In order to enable the patient to accept noninvasive ventilation and increase compliance, the initial ventilation pressure can be set at a lower level: IPAP can be set at about 10 cmH2O and the initial EPAP at about 2-4 cmH2O, and then set according to the patient's condition.
Set other auxiliary parameters (the content of the parameters varies according to the brand of the ventilator). Including respiratory frequency, inhalation-exhalation ratio, pressure rise time, inspiratory sensitivity, respiratory sensitivity, delayed pressure rise time, and alarm range.
There are 4 working modes:
① Continuous Positive Pressure Ventilation (CPAP); Stronger voluntary respiration, the inspiratory phase and respiratory phase both provide an identical pressure to help the patient open the airway.
② Autonomous Breathing Ventilation (S); patients with good autonomous breathing, with the person's breathing to trigger the machine to deliver air, if the person does not breathe the machine has been waiting.
③ Autonomous respiratory and timing mode (S/T); equivalent to two modes at the same time to start, usually working in S mode, the person does not breathe the machine will automatically start T mode.
④ Timing mode (T). No voluntary breathing or weak patients, set a time, such as 5 seconds, within 5 seconds the machine automatically sends a gas, do not have to wait for the person's breathing to trigger.
Three, wearing a mask:
Choose a mask that is suitable for the patient's face size, so that the mask can be adapted to the patient's face, and in the center of the face, can not squeeze the patient's eyes or beyond the patient's jaw.
Connect the oxygen tube (2-5L/min) to the oxygen suction hole of the mask, fix the mask with the headbands, and keep the force of the headbands even and symmetrical, so that the mask is in the center of the patient's mouth and nose.
Note that when wearing the mask must not be connected to the ventilator line, at this time the mask opening is connected to the atmosphere, the patient is in the mask oxygen.
Four, on the machine:
Connect the ventilator with the mask.
Adjust the position of the BiPAP connector outlet so that it blows neither directly to the patient nor to the healthcare worker.
Check for air leakage around the mask, and further adjust the mask so that the mask is just not leaking until (the amount of air leakage should be <20L/min), neither too tight nor too loose.
Fifth, shutdown
First disconnect the ventilator line and mask, then turn off the ventilator, and finally remove the mask.