User's Manual

NIBP Troubleshooting Guide (continued)
Clinical Situation Possible Cause Solution
Variable readings occur
■ Some arrhythmias may cause beat-to-
beat pressure and NIBP readings
■ Document arrhythmia if present, verify
pressure using another method, then
follow hospital procedure for care of this
type of patient
■ Larger than normal influence of
respiratory phases on blood pressure
(inspiratory fall in blood pressure;
expiratory rise)
■ NIBP software usually compensates for
normal variation
No NIBP readings or
questionable values in the
presence of shock
■ Peripheral vascular changes
experienced during shock may reduce
the reliability of blood pressure
readings obtained with any indirect
method; peripheral pulses may be
diminished or absent
■ Consider invasive pressure
measurements in patients with symptoms
of shock or in any patient who rapidly
becomes unstable for unknown reasons
90217 displays “LLL” and
alarm sounds
■ Low main battery condition ■ Turn off and replace batteries within 60
seconds after removal to continue
monitoring.
Cuff too tight
■ Cuff placed on patient too tightly ■ Reposition the cuff
■ Air pump staying on too long ■ Return unit to Spacelabs Medical for
service
Cuff too loose
■ Cuff placed on patient too loosely ■ Reposition the cuff
■ Air pump not staying on long enough ■ Return unit to Spacelabs Medical for
service