When equipped with the CO2 or AGENT option, the patient's respiration rate can be measured as
the time interval between detected breaths. Alternatively, the patient's respiration rate can be
measured using the pneumatic bellows and the wSpO2 module.
Patient Preparation for RESP Monitoring
When preparing a patient, the monitoring method used will impact the performance and
operation of the RESP parameter.
Monitoring Respiration using CO2
CO2‐derived respiration is calculated by measuring the time interval between detected breaths;
see chapter 7 (if equipped with the LoFlo option) or chapter 9 (if equipped with the AGENT
option) for detailed monitoring information. For RESP VS box functions when CO2‐derived
respiration is the source, see page 10‐3.
Monitoring Respiration using the Bellows
Bellows‐derived respiration is monitored by detecting abdominal or chest wall motion using the
pneumatic bellows device (REF 989803152791) and the wSpO2 module.
The bellows may be used in the MR system bore, although the module must not be placed within
the MR system bore. Note that there are no alarms for the bellows‐derived respiration rate as it
is not intended for vital sign monitoring.
If dropped, the wSpO2 module must be verified for correct operation before use; see page 14-12.
If bellows respiration is turned on while the CO2 is on, bellows respiration rate data will appear
in the RESP VS box and CO2 respiration rate data will appear in the CO2 VS box.
Expression MR400 Instructions for Use Monitoring RESP 10‐1