9-4 
 
9.4.4 Lateral Chest Expansion 
In clinical applications, some patients (especially neonates) expand their chests laterally, 
causing a negative intrathoracic pressure. In these cases, it is better to place the two 
respiration electrodes in the right midaxillary and the left lateral chest areas at the patient’s 
maximum point of the breathing movement to optimise the respiratory waveform.   
 
 
9.5 Choosing the Respiration Lead 
In the [Resp Setup] menu, set [Resp Lead] to [I], [II] or [Auto]. 
 
 
9.6 Changing the Apnea Alarm Delay 
The apnea alarm is a high-level alarm used to detect apneas. You can set the apnea alarm 
delay time after which the patient monitor alarms if the patient stops breathing. In the [Resp
Setup] menu, select [Apnea Delay] and then select the appropriate setting. The [Apnea
Delay] of Resp and CO
2
, module keeps consistent with each other. 
 
 
9.7 Changing Resp Detection Mode 
In the [Resp Setup] menu, select [Detection Mode] and toggle between [Auto] and 
[Manual]. 
  In auto detection mode, the patient monitor adjusts the detection level automatically, 
depending on the wave height and the presence of cardiac artifact. Note that in auto 
detection mode, the detection level (a dotted line) is not displayed on the waveform. 
  Use auto detection mode for situations where:   
The respiration rate is not close to the heart rate. 
Breathing is spontaneous, with or without continuous positive airway pressure (CPAP). 
Patients are ventilated, except patients with intermittent mandatory ventilation (IMV). 
  In manual detection mode, you adjust the dotted detection level line to the desired level 
by selecting [Upper Line] or [Lower Line] and then selecting 
 or   beside them. 
Once set, the detection level will not adapt automatically to different respiration depths. 
It is important to remember that if the depth of breathing changes, you may need to 
change the detection level. 
  Use manual detection mode for situations where:   
  The respiration rate and the heart rate are close. 
  Patients have intermittent mandatory ventilation. 
  Respiration is weak. Try repositioning the electrodes to improve the signal.