Patient Monitor User Manual Monitoring ECG/ RESP
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ALM HI: used to set up the upper limit of ECG alarm.
ALM LO: used to set up the lower limit of ECG alarm.
ECG alarm is activated when the heart beat exceeds set ALM HI value or falls below ALM LO
value.
NOTE:
Please set the alarm limits according to the clinical conditions of individual patients. The
upper limit shall not be 20 beats per min higher than the patient's heart rate.
HR FROM
ECG, SpO
2
, AUTO and BOTH may detect heart rate. AUTO distinguishes the heart rate source
according to the quality of signal. When the qualities of ECG signal and SpO
2
signal are the same,
ECG takes priority over SpO
2
. By picking ECG, the monitor prompts HR and activates HR beep.
By picking SpO
2
, the monitor prompts PULSE and activates pulse beep.
When SpO
2
is selected, the alarms for HR or PR are available, and the alarm prompt will display
in information area, but the alarm limit and alarm flashes are different for them.
BOTH mode displays HR and PR simultaneously. When this item is picked, PR parameter is
displayed to the right side of SpO
2
. As for the sound of HR or PR in BOTH mode, HR is given
the priority, i.e., if HR is available, the HR sound will be sent out, but if HR is not available, then
the sound will be for PR.
SWEEP
Available options for ECG SWEEP are 6.25, 12.5, 25.0 and 50.0 mm/s.
HR CHANNEL
"CH1" to count the heart rate by CH 1 waveform
"CH2" to count the heart rate by CH 2 waveform
Calculation Lead
For 3 Leads, II, I, and III are selectable; For 5 Leads, II, I, III, aVR, aVL, aVF, and V are
selectable; Normal QRS complex should be:
The normal QRS should be either completely above or below the baseline and it should not
be biphasic. For paced patients, the QRS complexes should be at least twice the height of
pace pulses.
The QRS should be tall and narrow.
The P-waves and the T-waves should be less than 0.2 mV.
NOTE:
Make sure you have selected the best lead with the best waveform amplitude and highest
signal-to-noise ratio. Choosing the best lead is important for heart beat test, heart beat
classification and ventricular fibrillation detection.
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