5
WARNINGS
Whenever the MVP10 is connected to a patient, a skilled operator should be present at all
times at the ventilator or within visual or hearing range of the alarm system used with the
MVP10.
High oxygen concentrations may be hazardous to the patient.
If the gas supply fails, the patient may breathe atmospheric gas through the failsafe valve.
This is only a temporary emergency measure, which requires elevated inspiratory effort and
should be corrected immediately.
A patient filter should always be used in the patient breathing circuit to prevent cross
contamination. Breathing through the negative pressure relief valve in a contaminated
environment can be hazardous.
Extreme care should be taken to assure that the patient circuit components are connected
correctly. Improper connection can cause malfunction.
A test lung should be ventilated prior to each use to ensure that all modes are functioning
correctly. An external spirometer should be used to verify correct volumes and flow rates.
Always be certain that the PIP Limit is set correctly and is operative even when volume
limiting, to prevent possible inadvertent administration of high pressure. Increased pressure
can be caused by blocked tubes, changes in patient compliance or resistance, or system
malfunction.
Breathing through the negative pressure relief valve requires a greatly increased work of
breathing and only air is provided. A situation in which the patient is breathing through this
valve should be rectified immediately in order to prevent possible adverse affects to the
patient.
Clean, dry, regulated gas supplies at 50
5 PSI (345 ±34.5 kPa) must be used at all times
or malfunction may result. Note carefully that the logic (power) gas supply should be 100%
oxygen at all times to give the greatest accuracy of the control settings and to assure the
most trouble-free operation.
If the ventilator is to be used unattended or without remote monitoring, a high/low pressure
alarm must be used at all times with the user within visual and/or audible range of this
alarm.
A TWO-WAY SAFETY RELIEF VALVE is installed internally. This valve opens when
pressure in the hose delivering gas to the patient rises above 70 cmH
2
O
10 cmH
2
O or falls
below -4 cmH
2
O. Its purpose is to limit maximum circuit pressure and to allow patient
inspiration in the unlikely event of failure of the gas supply. It is meant to allow
spontaneous breathing for a short time only until the operator can respond to the
disconnect alarm and rectify the supply malfunction. In such a situation, its use in a
contaminated environment could be hazardous. The SAFETY RELIEF VALVE must not be
removed; and must be maintained with its screened port up and unobstructed.
