Welch Allyn 246 Propaq CS Vital Signs Monitor v.3.7X - User Manual - Manual (Page 44)

40 Monitoring Welch Allyn Propaq CS Vital Signs Monitor
9. If the C-LOCK function is desired, press C-LOCK to set it to ON.
C-LOCK synchronizes the pulse oximeter's systole determination to the R-wave to
reduce the effects artifact may have on SpO
2
measurements. Under some conditions
you may find more stable SpO
2
readings with C-LOCK set to ON. SYNC appears next
to the waveform when synchronization to the ECG has been obtained.
Synchronization takes a few seconds to establish the first time. If C-LOCK is on and
the HR source is SpO
2
, the heart rate source is automatically changed to ECG. An
ECG signal must be present or C-LOCK does not activate.
If you get false SpO
2
alarms with patients with low perfusion states or multiple
arrhythmias, try turning off C-LOCK.
10. Set alarm limits according to your hospital’s standards.
11. If patient movement interferes with measurements, consider the following possible
solutions:
• Be sure the sensor is secure and properly applied.
• Use a new sensor with fresh adhesive backing.
• Select a different type of sensor.
• Move the sensor to a less active site.
Response (Seconds) Indications for use
NORMAL 5-7 Use for relatively stable patients.
FAST 2-3 Use when patient movement is minimal.
SLOW 10-15 Use when patients exhibiting movement are preventing accurate measurement at
NORMAL setting.
Note To help minimize false alarms, the Propaq monitor briefly delays or "holds off"
triggering both audible and visual alarms for limit violations for SpO
2
% and Pulse
Rate for 10 seconds. After the alarm hold-off period begins, if the monitor detects
that the patient’s vital sign has returned to acceptable limits, the monitor cancels
the alarm hold-off. The next time a vital sign limit is violated, the monitor starts a
new hold-off period.