B40/B20 Patient Monitor
11-20
Setting the ST measurement points
Automatic setting of the J, ST and ISO points
The ST algorithm automatically searches for the J and ISO points. The distance between the ST
and J point is set according to the heart rate:
−
If the heart rate is less than 120 bpm, the ST point is set at J+80 ms.
−
If the heart rate is more than or equal to 120 bpm, the ST point is set at J+60 ms.
Setting the J, ST and ISO points manually
You can also set the J, ST and ISO points manually. If any of these points is manually set, the
other two are set at their current values.
Select
Adjust ST
and
Set ISO point
,
Set J point
or
ST point
.
•
Setting the J point manually
The J point is the point on the ECG trace where the S wave transitions to the ST segment.
Adjust the J point by turning the Trim Knob and confirm by pushing the Trim Knob. If the J
point setting is changed, the original point is shown as a dashed line. When you adjust the
J point, also the ST point is set according to the selected ST point setting (J+20, J+40, J+60
or J+80).
The manually set J point remains until the monitor is turned off or reset. After a turn-off or
reset, the J point is set automatically.
•
Setting the ST point manually
ST segment is the component of the ECG trace between the end of the QRS complex and
the T wave.
Manual ST point adjustment sets the distance between ST and J points in ms. Selection
values are J+20, J+40, J+60, J+80.
The manually set ST point remains until the monitor is turned off or reset. After a turn-off
or reset, the ST point is set automatically according to the heart rate.
•
Setting the ISO point manually
The ISO point is on the isoelectric line. Adjust the ISO point by turning the Trim Knob and
confirm by pushing the Trim Knob. If the ISO point setting is changed, the original point is
shown as a dashed line.
The manually set ISO point remains until the monitor is turned off or reset. After a turn-off
or reset, the ISO point is set automatically.
Summary of Contents for B20
Page 2: ......
Page 16: ...B40 B20 Patient Monitor xii ...
Page 17: ...1 Introduction ...
Page 18: ......
Page 27: ...2 System description ...
Page 28: ......
Page 58: ...B40 B20 Patient Monitor 2 30 ...
Page 59: ...3 Installation ...
Page 60: ......
Page 69: ...4 Monitoring basic ...
Page 70: ......
Page 79: ...5 Alarms ...
Page 80: ......
Page 102: ...B40 B20 Patient Monitor 5 22 ...
Page 103: ...6 Monitor setup ...
Page 104: ......
Page 123: ...7 Trends ...
Page 124: ......
Page 140: ...B40 B20 Patient Monitor 7 16 ...
Page 141: ...8 Print and record ...
Page 142: ......
Page 153: ...9 Cleaning and care ...
Page 154: ......
Page 163: ...10 Troubleshooting ...
Page 164: ......
Page 181: ...11 ECG ...
Page 182: ......
Page 205: ...12 Impedance respiration ...
Page 206: ......
Page 215: ...13 Pulse oximetry ...
Page 216: ......
Page 232: ...B40 B20 Patient Monitor 13 16 ...
Page 233: ...14 Non invasive blood pressure ...
Page 234: ......
Page 248: ...B40 B20 Patient Monitor 14 14 ...
Page 249: ...15 Invasive blood pressure ...
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Page 261: ...16 Temperature ...
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Page 267: ...17 Airway gas ...
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Page 293: ...18 Entropy ...
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Page 316: ...Abbreviations A 12 ...
Page 318: ...B40 B20 Patient Monitor B 2 ...
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