Respiration measurements that are determined using the bellows method make chest wall
expansion very important for accurate monitoring of a patient's breathing. If the respiratory
signal appears to weaken between scans, instruct the patient to breathe more deeply during the
scan to create more movement at the sensor site.
To position the respiratory sensor
10‐2 Monitoring RESP Expression MR400 Instructions for Use
Avoid excessive bending of the flexible hose, as this can impair respiration detection.
Always apply the bellows to the patient prior to connecting the pneumatic respiration hose
to the port on the wSpO2 module; otherwise damage to the module can result.
Place the sensor on the patient's upper abdomen or lower chest
(whichever expands most during inspiration).
After the patient has exhaled, place the velcro strap around the
patient's trunk and secure the sensor snuggly.
Connect the flexible hose from the bellows to the pneumatic
respiration port on the wSpO2 module.
Check the battery indicator on the wSpO2 module to ensure that
enough charge exists:
• Green battery indicator = Charge sufficient; proceed to step 6.
• Red battery indicator = Charge low; proceed to step 5.
See page 2‐11 for details. (Also, you can reference the status
information pane; see page 2‐16.)
Insert a charged module battery into the wSpO2 module and then
recheck the battery indicator to ensure a sufficient charge before
proceeding; see page 1‐26.