ECG AND HR SAFETY CONSIDERATIONS
VF6 Infinity Vista 8-15
ECG and HR Safety Considerations
HR Alarm Settings
Set HR alarm limits on the Alarm Limits table (see the chapter Alarms and Messages).
If you turn the HR alarm off, the monitor displays a crossed bell icon in the HR
parameter box and the banner
HR Limits Off above the first waveform channel. If
arrhythmia monitoring and alarms for asystole and ventricular fibrillation are also
disabled, the monitor displays the banner
HR, ASY, VF, Off.
Neonatal ECG Monitoring
To obtain the most accurate heart rate count and waveform display, select the ECG
lead(s) with the smallest T wave and the largest monophasic QRS.
ECG 50/60 Hz Notch Filter Setting
When the line frequency is set incorrectly, the resulting 50 or 60 Hz noise on the ECG
signal can make the ECG waveform unreadable along with masking QRS complexes.
As a result, detection of the QRS complexes becomes unreliable. When these cannot
be sensed reliably, incorrect HR calculations may result, leading to both false positive
and false negative HR alarms.
Muscle Stimulators
NOTE:
z If arrhythmia detection is on, alarms for asystole (ASY) and ventricular
fibrillation (VF) are automatically on and cannot be turned off.
z By default, alarms for asystole and ventricular fibrillation are always on;
however, these alarms can be disabled in the password-protected Biomed menu
(see the appendix Default Settings and Biomedical Support).
WARNING: If the monitor displays the banner HR, ASY, VF
Off, there is no alarm annunciation for asystole and
ventricular fibrillation.
WARNING: Neonatal QRS complexes that are biphasic and
less than 40 ms wide, or monophasic and less than 20 ms
wide, are displayed smaller than their actual amplitude.
WARNING: The use of electrical muscle stimulators may
interfere with ECG and respiration monitoring. If this occurs,
discontinue their use.
To Next Page
Loading...
