Welch Allyn Acuity Directions For Use Manual page 81

Directions for use
Important considerations: ST Analysis
WARNING Before you set customized alarm limits for a patient, confirm the
patient's ID and room number. Otherwise, customized limits might be lost.
WARNING Do not use the Arrhythmia Analysis or ST Analysis feature on
neonates. The Arrhythmia Analysis and ST Analysis options are not intended for
use with neonatal patients.
WARNING The ST algorithm has been tested for accuracy of segment data. As
with all computerized ST analysis systems, the Acuity System cannot replace
skilled care and proper surveillance by a clinician. A clinician must review all data
obtained from the Acuity System, including the significance of ST-segment
changes, before implementing therapy based on this data.
WARNING Ensure these things to minimize false HR, Arrhythmia Analysis and
ST Analysis alarms, and to achieve optimal event detection and analysis:
• ECG cable, lead wires and electrodes are undamaged.
• Patient's skin is properly prepared.
• Electrodes are placed using standard good practices.
• 5-wire ECG cable is used. A 3-wire cable limits arrhythmia and ST-segment
analyses to a single lead, and ST analysis is disabled when a lead failure
occurs.
• LL electrode is connected. Otherwise, only one ECG lead is available and
arrhythmia and ST-segment analyses are effected.
• Patient monitor and Virtual Monitor display these things:
-HR numeric and ECG waveform
-Non-noisy signal. If signal is noisy, reduce patient movement and increase
distance from other electrical devices.
-Correct patient mode for the patient
• Virtual Monitor ECG 1 and ECG 2 display these things:
-ECG waveform
- Waveform amplitude at least 160 µV, peak-to-peak
-QRS complex amplitude at least twice the P or T wave amplitude
Chapter 4 Adjust monitoring settings and patient information 77