User's Manual

Contents
11-3
Directory of Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Display Detail. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Initiating a 12-Lead Report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Automatic Scheduling of 12-Lead Reports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Saving and Clearing 12-Lead Reports. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Sending 12-Lead Reports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Report Directory Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Patient Demographics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
12-Lead Diagnostics
Overview
The 12-lead report function acquires and displays 12 ECG vectors in the same
format as an electrocardiograph.
Diagnostic electrocardiographic devices obtain conventional ECG signatures that
accurately represent both the detailed waveforms in each cardiac cycle and the
beat-to-beat variability to determine cardiac rhythm. Prior to analysis, the ECG
data is split into two different paths: one to the module’s monitoring functions and
the other to the diagnostic functions. The ANSI/AAMI specifications for diagnostic
electrocardiographic devices, as required by the data in the diagnostic path, is
acquired at 500 samples per second.
The output from both the monitoring and diagnostic functions are combined and
transferred to the bedside monitor for display and distribution to the Ultraview
Care Network.
!
• No automated analysis is completely reliable. A physician
should read all ECG results.
• Special problems exist with pediatric ECGs because of the
considerable differences in the signal characteristics of adult
and infants and because of the evolution of the ECG patterns
from birth to adolescence.
• Digital systems produce a noticeable modulating effect from
one cycle to the next, particularly in pediatric ECGs. This
phenomenon, which is not physiologic, is due to the
asynchronism between data acquisition sample rate and the
peak of the QRS waveform.