Mindray ePM 10M, Руководство оператора

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10.6.7 Adjusting the QRS Volume
To adjust the QRS volume, follow this procedure:
1. Select the ECG numeric area or waveform area to enter the
ECG
menu.
2. Select the
Setup
tab.
3. Set
QRS Volume
.
When valid SpO
2
measurements are available, the monitor adjusts the pitch of QRS tone based on the SpO
2
value.
10.6.8 Adjusting the Minimum QRS Detection Threshold
To avoid false asystole alarm due to low R wave amplitude, and to avoid tall T waves and P waves being mistaken
for QRS complexes, the monitor provides a means to manually adjust the minimum QRS detection threshold.
To adjust the minimum QRS detection threshold, follow this procedure:
1. Select the ECG numeric area or waveform area to enter the
ECG
menu.
2. Select the
Setup
tab and set
Filter
to
Monitor
.
3. Select the
QRS Threshold
tab.
4. Select up or down arrow buttons to adjust the minimum threshold for QRS detection. Selecting
Default
resets the QRS threshold to the default value (0.16 mV).
CAUTION
•
The setting of the QRS detection threshold can affect the sensitivity for arrhythmia, ST, QT/QTc
detection, and heart rate calculation.
•
If QRS amplitude is low, the monitor might not be able to calculate heart rate and false asystole calls
may occur.
NOTE
•
The minimum QRS detection threshold can only be adjusted when the ECG filter is set to Monitor.
10.7 Monitoring Arrhythmia
Arrhythmia monitoring is intended for adult, pediatric and neonatal patients.
10.7.1 Arrhythmia Safety Information
WARNING
•
Heart rate reading may be affected by cardiac arrhythmias. Do not rely entirely on heart rate alarms
when monitoring patients with arrhythmia. Always keep these patients under close surveillance.
•
Atrial fibrillation (Afib) detection function is not intended for pediatric and neonatal patients.
•
The arrhythmia analysis program may incorrectly identify the presence or absence of an arrhythmia.
Therefore, a physician must analyze the arrhythmia information with other clinical findings.
CAUTION
•
Since the arrhythmia detection algorithm sensitivity and specificity are less than 100%, sometimes
there may be some false arrhythmias detected and also some true arrhythmia events may not be
detected. This is especially true when the signal is noisy.
•
The ECG size and minimum QRS detection threshold settings affect arrhythmia detection and heart
rate calculation sensitivity.
•
If QRS amplitude is low, the monitor might not be able to calculate heart rate and false asystole calls
may occur.During the learning phase of the algorithm, arrhythmia detection may not be available.