Biolight Meditech P1 - Page 200

P1 Patient Monitor User’s Manual
16-10

16.6.2. Input Parameter
Input Parameter Unit Full Name
FiO
2
% percentage fraction of inspired oxygen
RR rpm respiration rate
PeCO
2
mmHg, kPa partial pressure of mixed expiratory CO
2
PaCO
2
mmHg, kPa partial pressure of carbon dioxide inthearteries
PaO
2
mmHg, kPa partial pressure of oxygen in the arteries
TV mL tidal volume
RQ / respiratory quotient
ATMP mmHg, kPa atmospheric pressure
16.6.3. Output Parameter and calculation formula
Output
Parameter
Unit Full Name Formula
PAO
2
mmHg,kPa
partial pressure of
oxygen in the
alveolar
PAO
2
=【FiO
2
×(ATMP－water
pressure) 】－(PaCO
2
×1.25)
Wherein the water pressure is
selected to be 47mmHg (6.3kPa)
AaDO
2
mmHg,kPa
alveolar-arterial
oxygen difference
AaDO
2
=PAO
2
－PaO
2
Pa/FiO
2
mmHg,kPa oxygenation ratio Pa/FiO
2
= PaO2/FiO
2
a/AO
2
%
arterial to alveolar
oxygen ratio
a/AO
2
= （100 ×PaO
2
）/PAO
2
MV L/min minute volume MV=(TV/1000)×RR