Welch Allyn Acuity 6.31.01 User Manual Update - User Manual - Manual (Page 5)

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English Update for Acuity System
This document describes changes in operation for the Acuity Central Monitoring System
(software version 6.31.01). This document replaces information in the following manuals:
• 810-1598-02 B Acuity System Directions For Use (software version 6.3X)
• 810-1600-02 B Acuity LT and Mobile Acuity LT Wireless System Directions For Use
(software version 6.3X)
• 810-1608-02 B Acuity LT and Mobile Acuity LT Hardwired System Directions For Use
(software version 6.3X)
For other operating information not contained in this document, refer to the preceding
manuals.
Heart Rate Calculation
Understanding Differences Between Acuity System and Monitor
It is possible for the Acuity Central Station with Arrhythmia Analysis Option to display a
different heart rate than the bedside patient monitor.
• The Acuity System with the Arrhythmia Analysis Option calculates the patient heart
rate by using the Mortara arrhythmia library analysis algorithms that are integrated
into the Acuity System software. This approach analyzes beat morphology using
multiple leads (when available). The result is a more sophisticated assessment of
heart rate that is less affected by noise and other artifact. Noise and other artifact can
affect the single-lead heart rate calculation performed by the bedside monitor. The
Acuity System heart rate is also in greater harmony with the ECG waveform,
arrhythmia detection, and arrhythmia event alarms.
• The bedside monitor displays the heart rate that it calculates using the single-lead
heart rate analysis. It does not use arrhythmia analysis. It is possible that this heart
rate may be different from the heart rate at the Acuity Central Station. The differences
are most likely to occur with rare ECG morphologies, such as “tall ‘T’ waves,” certain
paced rhythms, and noise or artifact.