17 Monitoring Noninvasive Blood Pressure
148
Calibration
NBP is not user-calibrated. Cuff-pressure transducers must be verified at least once every two years by
a qualified service professional, and calibrated, if necessary. See the Service Guide for details.
Troubleshooting
Problem Possible Causes Solutions
Cuff will not inflate. Monitor is in Service or Configuration
Mode.
Technical defect. Call service.
Cuff tubing not connected. Connect cuff tubing.
High or low values
measured (against clinical
expectations).
Contraction occurring. Wait until contraction has finished.
Patient talking before or during
measurement.
Allow patient to rest quietly, then try again
after three to five minutes.
Incorrect cuff size or cuff not at heart
level.
Check cuff size, level, and position.
Noninvasive blood pressure reference
method set incorrectly.
Check the reference method configured
(auscultatory or intra-arterial) and correct if
necessary in Configuration Mode.
Displays zeros for systolic
and diastolic values.
Measurement automatically
repeats.
Severe vasoconstriction at cuff site. Move cuff to another limb, check for shock,
or verify blood pressure using another
method.
Erratic blood pressure fluctuations due
to arrhythmias or rapid-acting drugs or
contractions.
Try again, if unsuccessful, verify blood
pressure using another method. Wait until
contraction has finished.
Excessive patient movement or
convulsions.
Restrain movement or verify blood pressure
using another method.
NBP CUFF OVERPRESS INOP is displayed. See “Patient Alarms and INOPs” on
page 73.
NBP EQUIP MALF INOP is displayed.
NBP INTERRUPTED INOP is displayed
NBP MEASURE FAILED
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