User`s guide

Choosing a Report Format
PageWriter 200/300pi M1771A/1770A Cardiograph 2-21
2
Basic Measurements
The basic measurements table gives standard interval and duration
measurements in milliseconds, and limb lead axis measurements in degrees.
These are representative values for the dominant beat pattern in the ECG. For
more information on how representative beat measurements are derived, refer
to “How the PageWriter 200/300pi Measures ECGs” in “Understanding ECG
Analysis and the Predictive Instruments Applications”.
Calibration Signals
The following table shows how the height of the calibration pulse indicates
ECG sensitivity. Note that the display indicates sensitivity as:
P Cardiograph settings for speed, and for limb and chest lead
sensitivity.
Q Location code and cardiograph ID number (Options #A05 or
StressWriter only)
Table 2-9: Basic Measurements
Item Description Units
RATE Heart rate beats per minute
PR PR interval milliseconds
QRSD QRS duration milliseconds
QT QT interval milliseconds
QT
C
QT interval corrected for rate milliseconds
P Frontal P axis degrees
QRS Frontal mean QRS axis degrees
T Frontal T axis degrees
Table 2-8: Auto Report Annotations
Description