B30 Patient Monitor
15-2
Module description
Figure 15-1 Modules E-PSMW and E-PSMPW for impedance respiration
measurement
Respiration detection
The respiration rate is the sum of the respirations that have exceeded the detection limit.
The dotted lines present the zero line and the detection limit. The signal strength produced by a
respiration should thus exceed this minimum limit to be included in the respiration rate
calculation. Peaks within the grids are not calculated.
If the detection mode is AUTO, the grid lines present the minimum limits. The limits in use may
be larger. The RR value could include fewer respirations than indicated by the gridline.
Respiration rate calculation
Respiration rate is calculated automatically when ECG or CO
2
is measured unless the
respiration measurement is turned off. When CO
2
is measured, the respiration rate is
automatically calculated from CO
2
.
Respiration rate calculation switches back to impedance respiration if you press the
Silence
Alarms key during an Apnea alarm.
The respiration rate source is displayed above the respiration numeric value.
Figure 15-2 Respiration rate source indication for impedance and CO
2
The impedance respiration waveform is displayed next to the RR value also when the RR value
is calculated from CO
2
.
E-PSMW
E-PSMPW
ECG and
impedance
respiration
connector
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