Mindray iPM-9800, Руководство оператора

Страница: 89 / 300

8-11
8.5.7 Selecting ECG Waves for Display
In the all parameters screen, the patient monitor allows up to three ECG to be displayed
simultaneously.
When monitoring with a 5-lead set, you can select [
Waveforms
] in the ECG setup menu
and then select either one, or two, or three waves for display. When you select three ECG
waves for display, there must be one ECG wave that will be displayed permanently on the
screen. For 5-lead ECG monitoring, the permanently displayed ECG wave is lead V, and for
12-lead ECG monitoring, the permanently displayed one is lead V1.
8.5.8 Changing ECG Wave Settings
To change a wave’s settings, select the wave you want to change to enter its lead menu.
„ If the wave is too small or clipped, you can change its size by selecting an appropriate
[
Gain
] setting. If you select [
Auto
] from [
Gain
], the patient monitor will automatically
adjust the size of the ECG waves. In the all parameters screen, only the selected ECG
wave’s size is adjusted. In other screens, all ECG waves’ size is adjusted
simultaneously.
„ You can adjust a wave’s position by adjusting the or button beside [
Adjust
Wave
] button.
„
You can restore a wave to its original position by selecting [
Back to Default
].
8.5.9 Choosing an ECG Lead for HR Computing and Arrh.
Monitoring
For the Basic algorithm, to compute HR and to analyze and detect arrhythmia more
accurately, you can choose a lead of best quality signals as the HR lead. To select a lead as
the HR lead, in the all parameters screen, select the wave corresponding to the HR
parameter to enter its lead menu. In the lead menu, select [
HR Source
] and then select the
lead you want.
The selected lead should have the following characteristics:
„ The QRS should be tall and narrow, with no notch
„ R-wave should be either completely above or below the baseline and it should not be
biphasic.
„ The height of pace pulses should not be above R-wave
„
T-wave should be smaller than 1/3 R-wave height.
„ The P-wave should much smaller than the T-wave.