Welch Allyn 300 Series Vital Signs Monitor - User Manual - Manual (Page 43)

Directions for Use Chapter 3 Patient Monitoring 39
Within a few seconds, the pulse amplitude indicator reflects the rate and strength of
the pulse.
Within less than 20 seconds, the SpO
2
window displays the SpO
2
measurement and
a numeric pulse rate value appears in .
To adjust the volume of the SpO
2
pulse tone, see “Changing the Volume of the Pulse
Tone” on page 26.
Note During an SpO
2
measurement, the displayed pulse rate is derived from the SpO
2
sensor. Otherwise, the pulse rate is derived from NIBP.
Detaching the sensor during an SpO
2
measurement triggers an alarm.
If alarms are set for SpO
2
or pulse rate, a condition of no pulse for between 5 and
10 seconds causes an alarm.
If SpO
2
is being measured continuously on a patient over an extended period,
change the location of the sensor at least every three hours or as indicated by
the directions supplied with the sensor.
Caution Users should check for audible pulse tones in conjunction with the
SpO
2
function. If these tones do not sound, the audio has failed. Remove the
device from service and contact Welch Allyn.
The loss of the audible alarm could cause a delay in a clinician learning of an alarm
condition for the following conditions: 1) hypotension or hypertension, 2) low
blood oxygen content (SpO
2
), 3) low or high pulse rate, 4) other alarm conditions
relating to the loss of monitoring of a patient (e.g., a “sensor off” condition). Such
delay could potentially result in injury to the patient.
SYS
DIA
SpO 2 %
/min
ºF ºF
kPa 60
20:23:48
9.5
17.1 99