Trio™ Operating Instructions 0070-10-0666-01 vii
Precautions Introduction
Precautions
CAUTION: The use of portable and mobile RF communications 
equipment, in the proximity of the Trio, can affect the 
performance of this monitor.
CAUTION: The use of unapproved accessories may diminish monitor 
performance.
CAUTION: The Trio should not be used adjacent to or stacked with 
other equipment. If adjacent or stacked use is necessary, the 
Trio should be observed to verify normal operation in the 
configuration in which it will be used.
CAUTION: Operation of the Trio below the minimum amplitude or 
value of PATIENT physiological signal may cause inaccurate 
results (see section 6.0, Appendix).
CAUTION: When using electrosurgery equipment, never place an 
electrode near the grounding plate of the electrosurgery 
device. This may create interference with the ECG signal.
CAUTION: The patient size selection should be matched to the actual 
patient before monitoring begins.
CAUTION: To avoid possible damage to the Trio, use only approved 
ECG cables and approved accessories.
CAUTION: Line isolation transients may resemble actual cardiac 
waveforms, thus inhibiting heart rate alarms. Check lead 
wires for damage and ensure good skin contact prior to and 
during use. Always use fresh electrodes and follow proper 
skin preparation techniques.
CAUTION: Use of accessories, transducers and cables other than those 
specified in the manual may result in increased 
Electromagnetic Emissions or decreased Electromagnetic 
Immunity of the Trio. It can also cause delayed recovery 
after the discharge of a cardiac defibrillator.
CAUTION: Thoracic respiration measurement may interfere with some 
pacemakers. Refer to the pacemaker's manufacturer 
supplied manual.
CAUTION: If a 3 Lead cable is used when a unit is set to 5 lead mode, 
no ECG signal will be obtained. If a 5 lead cable is used 
when the unit is set to 3 lead mode only Lead I, II and III are 
operable.
CAUTION: Do not place the SpO
2
 sensor on an extremity with an 
invasive catheter or blood pressure cuff in place.
CAUTION: Tissue damage or inaccurate measurement may be caused 
by incorrect sensor application or use, such as wrapping too 
tightly, applying supplemental tape, failing to inspect the 
sensor site periodically or failing to position appropriately. 
Carefully read the sensor directions and all precautionary 
information before use.
CAUTION:  Excessive ambient light may cause inaccurate 
measurements. In such cases, cover the sensor site with 
opaque material.
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