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2 - 44 0070-10-0666-01 Trio™ Operating Instructions
2.4.4 NIBP Monitoring
The Trio utilizes the oscillometric method of measuring Non-Invasive Blood Pressure (NIBP). 
The measurement includes Systolic (SYS), Diastolic (DIA) and Mean Arterial Pressures (MAP). 
Two (2) frequency modes of obtaining measurements are available: MANUAL and 
INTERVAL. Each mode will display the Systolic (SYS), Diastolic (DIA) and Mean Arterial 
Pressure (MAP) values in the NIBP tile.
CAUTION: Use only approved blood pressure cuffs and hoses with the 
Trio.
CAUTION: A patient's skin is sometimes fragile (i.e. on pediatric and 
geriatric patients or due to physiological conditions). In 
these cases, a longer time duration between measurements 
should be considered to decrease the number of cuff 
inflations over a period of time. In extreme cases, a thin 
layer of soft roll or cotton padding may be applied to the 
limb in order to cushion the skin when the cuff is inflated. 
This measure may affect NIBP performance and should be 
used with caution.
CAUTION: Please consult a physician for interpretation of blood 
pressure measurements.
CAUTION: A blood pressure measurement can be affected by the 
position of the patient, and his/her physiological condition 
as well as other factors, such as patient movement.
CAUTION: Any condition which may affect the regularity and strength 
of arterial pressures (such as patient movement, cardiac 
arrhythmias, restriction of hose, etc.), will affect the 
accuracy and ability to measure the NIBP.
CAUTION: Observe caution on all patients (Pediatrics and Adults) when 
NIBP is set to the Continuous mode and the 1 minute 
Interval. When the NIBP “Continuous” interval is chosen, the 
Trio will continually take back to back blood pressure 
readings. As a safety precaution, a limit is placed on the 
Continuous mode to revert to an interval of every 5 minutes 
after 5 minutes of continuous readings.
MANUAL MODE Each time a measurement is desired, press the NIBP key on the Trio 
keypad to initiate a measurement. Press the NIBP key a second time 
to stop a measurement already in progress.
INTERVAL MODE Measurements are taken automatically at selected time intervals. The 
selections are: CONT (continuous), 1min, 2min, 3min, 4min, 
5min, 10min, 15min, 30min, 1HR, 2HRS, 4HRS or OFF. The 
NIBP key on the Trio keypad must be pressed to initiate the first 
measurement of the interval measurement cycle. If the patient is 
discharged from the monitor while in interval mode, the interval 
setting will revert to the User Default and the next measurement will be 
delayed until the NIBP key is pressed. During the delay period, the 
interval setting will remain displayed in the NIBP numeric tile and the 
Elapsed Time (ET) will display as “0min”.
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