Welch Allyn Vital Signs Monitor - User Manual - Manual (Page 44)

38 Vital Signs Monitor
• Poor patient perfusion
• Venous pulsations
• Anemia or low hemoglobin concentrations
• Cardiovascular dyes, such as methylene blue
• Fingernail polish
• Strongly pigmented skin
• Arterial occlusion proximal to the sensor
• Hypotension
• Severe vasoconstriction
• Cardiac arrest or shock
Using the SpO
2
Pulse Tone
All Welch Allyn Vital Signs Monitors with pulse oximetry capability are equipped with a pulse tone.
This audible tone beeps in synchronization with each beat of the patient’s heart. In addition, the fre-
quency of the tone will vary based on the patient’s oxygen saturation value. The higher the tone’s
frequency, the higher the patient’s oxygen saturation value.
The volume of the pulse tone may be adjusted to any of 5 volume settings, as well as a “volume
off” setting. To change the volume of the SpO
2
pulse tone, follow these procedures:
When the SpO
2
sensor is attached to a patient, press the VOLUME button. With each subsequent
press of the button the volume of the pulse tone will increase, until the “Off” setting is reached.
Subsequent presses of the VOLUME button will again cycle through the five volume settings.
When the desired volume setting is reached, refrain from pressing the button for three seconds and
the setting will be saved. In all settings except “volume off” the pulse tone indicator light will be illu-
minated. There is no visual indicator of the volume level.
When the SpO
2
sensor is NOT attached to a patient, press the VOLUME button. With each press of
the button a sample pulse tone will sound, and the SpO
2
Pulse Signal Bar Graph will provide a visual
indicator of the volume setting. Subsequent presses of the VOLUME button will cycle the unit
through each of the five volume settings until the “Off” setting is reached. Alternatively, the user
can press the SET (arrow up and arrow down) buttons to cycle through the volume choices. When
the desired volume setting is reached, refrain from pressing the button for three seconds and the
setting will be saved. In all settings except “volume off” the pulse tone indicator light will be illumi-
nated.
Printer Operation
The Welch Allyn Vital Signs Monitor may be configured with an optional integrated thermal printer.
The operator may control the printer using the two buttons (FEED, PRINT) located on the top rear
face of the Monitor.
Pressing the FEED button advances the paper.
The PRINT button will generate the printout of all the stored blood pressure, temperature, pulse rate
and SpO
2
data in the Monitor. The unit will store and print a maximum of 99 data sets.