7-2 
7.2 Alarm Levels 
By severity, the patient monitor’s alarms can be classified into three categories: high level, 
medium level and low level. 
Physiological alarms  Technical alarms 
High
level 
Indicate that your patient is in a 
life threatening situation, such 
as Asystole, Vfib/Vtac and so 
forth, and an emergency 
treatment is demanded. 
Indicate a severe device malfunction or an 
improper operation, which could make it possible 
that the monitor cannot detect critical patient status 
and thus threaten the patient’s life. 
Medium
level 
Indicate that your patient’s vital 
signs appear abnormal and an 
immediate treatment is 
required. 
Indicate a device malfunction or an improper 
operation, which may not threaten the patient’s life 
but may compromise the monitoring of vital 
physiological parameters. 
Low
level 
Indicate that you patient’s vital 
signs appear abnormal and an 
immediate treatment may be 
required. 
Indicate a device malfunction or an improper 
operation, which may compromise a certain 
monitoring function but will not threaten the 
patient’s life. 
 
 
7.3 Alarm Indicators 
When an alarm occurs, the patient monitor will indicate it to the user through visual or 
audible alarm indications. 
  Alarm lamp 
  Alarm message 
  Flashing numeric 
  Audible alarm tones 
 
 
7.3.1 Alarm Lamp 
If a technical alarm or physiological alarm occurs, the alarm lamp will flash. The flashing 
color and frequency match the alarm level as follows:   
  High level alarms:     the lamp quickly flashes red. 
  Medium level alarms:        the lamp slowly flashes yellow. 
  Low level physiological alarms:    the lamp turns yellow without flashing. 
  Low level technical alarms:      the lamp does not light.