User Manual Part 5

66 Standalone Monitoring Welch Allyn Propaq LT Vital Signs Monitor
• The pulse signal can disappear if any of the following conditions exists:
- the sensor is too tight
- ambient light is too bright
- an NIBP cuff is inflated on the same limb as the sensor
- arterial occlusion occurs near the sensor
- the patient is in cardiac arrest or shock
- the patient has hypotension, severe vasoconstriction, severe anemia, or
hypothermia.
• If poor perfusion affects performance for an adult, consider using the adult nasal
sensor.
• If a sensor is connected and the sensor light does not come on within 3 seconds:
- Verify that SpO
2
is turned on (Figure 65)
- Replace the sensor
•The SpO
2
system is tolerant of normal patient motion. If excessive or prolonged
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
6. Periodically verify that the sensor remains properly positioned on the patient.
About SpO
2
Spot Check
When SpO
2
is turned on, the monitor generates an alarm condition whenever SpO
2
readings are interrupted, such as when the sensor is disconnected from the patient after
the monitor begins taking SpO
2
readings.
Using the SpO
2
Spot Check feature, however, you can take any number of spot SpO
2
readings at random intervals, attaching and detaching the sensor repeatedly without
generating alarms.
To Prepare to Take a Spot Check Reading
1. Highlight SpO
2
and press .
Note
The Spot Check feature is available only if it is enabled in the monitor
configuration. Refer to “Configuring the Monitor” on page 126.‘