4-14
Principles of operation
setting. If the patient fails to trigger a breath within the interval determined by
the Rate control, the ventilator triggers a Timed (backup) breath with the set
I-Time, Rise, and IPAP settings.
The control settings active in the PPV mode are shown in Figure 4-14.
Figure 4-14: PPV controls
Figure 4-15 shows PPV mode waveforms. Note how volume and pressure
increase as does the ventilatory demand of the patient. Max V (PPV maximum
volume limit) and Max P (PPV maximum pressure limit) are used to prevent
the delivery of excessive pressure or volume. More information about these
limits is provided in “About Max V and Max P alarms and alarm limits” on
page 6-7.
Figure 4-15: PPV waveforms
Vol
u
me
Fl
ow
Pr
es
sur
e
Max V
Increase in patient demand
Time
Max P
EPAP
Summary of Contents for Respironics V60
Page 1: ...Respironics V60 V60 Plus Ventilator User Manual ...
Page 2: ......
Page 8: ...viii ...
Page 28: ...2 10 Symbols ...
Page 44: ...3 16 General information ...
Page 60: ...4 16 Principles of operation ...
Page 74: ...5 14 Setting up the ventilator for use ...
Page 102: ...6 28 Operation ...
Page 110: ...7 8 High flow therapy ...
Page 114: ...8 4 Patient monitoring ...
Page 132: ...9 18 Alarms messages and troubleshooting ...
Page 142: ...10 10 Care and maintenance ...
Page 162: ...A 10 First time installation ...
Page 182: ...D 10 Regulatory compliance ...
Page 198: ...E 16 Diagnostic mode ...
Page 210: ...Index Index 6 ...
Page 211: ......