©2020 Baxter International Inc. B- 3
System Performance Specifications and Accuracy
HR
Heart Rate
The number of contractions (heart beats) of the heart in one minute.
The HR units are BPM (Beats per Minute).
MAP
Mean Arterial Pressure
The mean blood pressure. It depends on the flow of blood from the
heart (cardiac output) and the resistance to flow in the small arteries
and microscopic resistance vessels (arterioles).
SBP
Systolic Blood Pressure
Systolic Blood Pressure measurement.
SpO
2
Arterial blood oxygenation.
SV
Stroke Volume
The amount of blood (milliliters) pumped by the ventricle of the heart in
one contraction.
SVI
Stroke Volume Index
Relates the stroke volume (SV) to body surface area (BSA), thus relating
heart performance to the size of the individual (SV/BSA). The unit of
measurement is milliliter per minute per square meter (cc/min/m
2
).
SVV
Stroke Volume Variation
The calculated variation around the stroke volumes which occur at a
window of time (for example during 30 seconds). SVV reflects the
patient’s preload responsiveness.
SVV is meaningful only in positive-pressure mechanically ventilated
patients, during stable periods (for example no movement or unstable
respiration). SVV is not accurate during cardiac arrhythmia. During
other periods, SVV may reflect non-respiratory influences on the stroke
volume and be less predictive of actual preload responsiveness. The
user should take the SVV results in this context and look for appropriate
periods in using this parameter. More insight is available in medical
publications about SVV and preload responsiveness. Literature on this
topic as on hemodynamics and cardiac output monitoring may be
referenced by Baxter International Inc. upon request.
Table B-2 Primary Measurements Calculated and Displayed (continued)
Parameter Measurement Description
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