Masimo EMMA - Citations

www.masimo.com 52 Masimo
Citations
[1] The EMMA Capnograph displays CO
2
in partial pressure units (kPa or mmHg) and compensates the displayed value for
the actual barometric pressure. The EtCO
2
value is the max partial CO
2
pressure measured within a breath and the
displayed value is:
– the latest EtCO2 values i.e. if ΔEtCO
2
≥ 25% or
– the average of up to four EtCO
2
values measured within 30s given ΔEtCO
2
<25%.
[2] Gas reading showing actual partial pressure at current humidity level. Partial pressure of CO
2
in the alveoli, where the
breathing gas is saturated with water vapor at body temperature (BTPS), is typically 6% lower than the corresponding
CO
2
partial pressure after removal of all water vapor (ATPD).
[3] EtCO2 was measured at I/E ratio 1:1 using breath simulator according to the test setup in EN ISO 80601-2-55 fig.
201.101. The measured EtCO
2
was within the accuracy range for all respiration rates up to 150 bpm.
[4] To include quantitative effect on gas reading from variations in environment conditions (outside STP,
electromagnetic disturbances) and presence of Halothane, Ethanol, Isopropyl alcohol, He, Acetone and Methane, the CO
2
accuracy range should be increased to ±4 mmHg/ ±0.5 kPa or ±10% of reading whichever is the greater. In addition the
following interference effects on CO
2
readings exists:
- 60 vol% of N2O typically increases CO
2
-readings by 10%
- 60 vol% of O2 typically decreases CO
2
-readings by 4% (EMMA compensates CO
2
-values for influence from
21% O
2
as default)
- 5 vol% of ENF, ISO, SEV typically increases CO
2
-readings by 8%
- 15 vol% of DES typically increases CO
2
-readings by 12%
- 80% Xe typically decreases CO
2
-readings by 10%
- 50% He typically decreases CO
2
-readings by 6%.
[5] Battery life test was performed using Energizer brand batteries. www.energizer.com.
[6] Depending on battery type and status; 19 minutes when tested with new Alkaline batteries, >20 minutes when
tested with new Lithium batteries.