Physio-Control LIFEPAK 15 - Manual (Page 63)

MONITORING
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©2007-2013 Physio-Control, Inc. LIFEPAK 15 Monitor/Defibrillator Operating Instructions
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general, it is best to wait at least 30 seconds after applying the last electrode before pressing the
12-LEAD button, to allow for electrode/skin stabilization. Also, good skin preparation shortens the
stabilization time.
Computerized ECG Analysis
Computerized ECG analysis statements are automatically printed on 12-lead ECG reports. Printing
of the interpretive statements is a setup option and may be turned off in Setup mode. For
information on how to change this setup option, see the LIFEPAK 15 Monitor/Defibrillator Setup
Options provided with your device.
The interpretative statements pertaining to myocardial injury, infarct, and ischemia are derived
from measurements made on a signal-averaged beat (median beat) formed for each of the 12 leads.
The computerized ECG analysis selects three representative beats from the ten seconds of data for
each lead and averages the three beats to derive the median beat for that lead. The ECG analysis is
always based on ECG data obtained at 0.05–150 Hz frequency response.
The analysis program is adjusted for patient age and sex. The 12-lead ECG interpretive algorithm
used by the LIFEPAK 15 monitor/defibrillator is the University of Glasgow 12-Lead ECG Analysis
Program. For more information, contact your Physio-Control representative for a copy of the Physio-
Control Glasgow 12-Lead ECG Analysis Program Physician’s Guide.
Printed 12-Lead ECG Report Formats
Two 12-lead ECG report formats are available for printing: 3-channel or 4-channel. In addition,
each of those formats can be printed in standard and cabrera styles.
The 3-Channel Format
The 3-channel format prints 2.5 seconds of data for each lead. Figure 4-7 is an example of a
12-lead ECG report printed in the 3-channel format, standard style. Figure 4-8 is an example of
a 12-lead ECG report printed in the 3-channel format, cabrera style. The sequence in which the
limb leads are presented differs between the standard and cabrera styles, as shown. The default
format for printing 12-lead ECG reports is 3-channel standard. To change the printed format of
WARNING
POSSIBLE INCORRECT TREATMENT WITH REPERFUSION THERAPY
Computerized ECG interpretive statements should not be used to withhold or prescribe
patient treatment without review of the ECG data by qualified medical personnel. All
12-lead ECG interpretation statements provided by the LIFEPAK 15 monitor/
defibrillator include the printed message **UNCONFIRMED**. Always confirm
interpretive statements by over-reading the ECG data.