Philips Efficia CM Series - CO2 Microstream Specifications

CO2 Microstream™ Specifications
Specifications
9-16 Efficia CM Series Rack and Modules Instructions for Use
CO
2
Microstream™ Specifications
Capnography is a non-invasive method for monitoring the level of carbon dioxide in
exhaled breath (etCO
2
) to assess a patient’s ventilatory status. Microstream™
capnography modules use Microstream™ non-dispersive infrared (NDIR) spectroscopy.
Infrared spectroscopy is used to measure the concentration of molecules that absorb
infrared light. Because the absorption is proportional to the concentration of the
absorbing molecule, the concentration can be determined by comparing its absorption to
that of a known standard. The Microstream™ etCO
2
sampling lines deliver a sample of
the inhaled and exhaled gases from the ventilator circuit or directly from the patient at 50
ml/min sampling flow rate. Moisture and patient secretions are extracted from the
sample, while maintaining the shape of the CO
2
waveform.
The capnography module is intended to provide professionally-trained healthcare
providers with continuous, non-invasive measurement and monitoring of carbon dioxide
concentration of the expired and inspired breath and respiration rate. It is intended for
use with neonatal, pediatric, and adult patients in hospitals, hospital-type facilities, and
intra-hospital transport.
Parameter Specification
Measurement Range 0 mmHg – 150 mmHg
Unit of measure Options include: mmHg, kPa or cmH
2
0
Module operates with
ambient CO
2
levels
0 to 700 ppm
Data Sample Rate Waveform sampling, 20 samples per second
Flow Rate 50 ml/min –7.5 + 15 ml/min, flow measured by volume.
If the module cannot hold the flow within the specified range, the module will
stop measuring, enter Failure Mode, and set the appropriate status bits
etCO
2
and imCO
2
Displayed Resolution
1 mmHg
Power Up Time
1
Maximum 10 seconds
Initialization Time The time between powering up the monitor and presenting the first reading is
typically 30 seconds; maximum 3 minutes
CO
2
Response Time The total response time for adults/pediatrics is approximately 3.9 seconds, for
10% to 90% changes in CO
2
concentration. Calculated as follows:
Delay time + Rise time + System response time
CO
2
Delay time: 2.7 seconds (typical)
CO
2
Rise time: 0.2 seconds (typical)
Monitor response time: 1.0 second
The maximum CO
2
response time (with a standard-length FilterLine™) is 5.3
seconds (typical).
Note:
• Adult/Pediatric Long FilterLines and Long Smart CapnoLines have a
maximum CO
2
response time of 6.9 seconds (typical).
• For information on CO
2
response time for infant/neonatal patients, see
“CO2 Response Time for Infant/Neonatal Accessories” on page 9-18.